{"id":3707,"date":"2026-09-14T12:07:33","date_gmt":"2026-09-14T04:07:33","guid":{"rendered":"https:\/\/eqsvq3fzct.wpdns.site\/blog\/technical-requirements-to-mccb\/"},"modified":"2026-10-20T10:51:31","modified_gmt":"2026-10-20T02:51:31","slug":"%d8%b4%d8%b1%d8%a7%db%8c%d8%b7-%d9%81%d9%86%db%8c-%d8%a8%d8%b1%d8%a7%db%8c-mccb","status":"publish","type":"post","link":"https:\/\/w9-group.com\/fa\/blog\/technical-requirements-to-mccb\/","title":{"rendered":"\u0634\u0631\u0627\u06cc\u0637 \u0641\u0646\u06cc \u0628\u0631\u0627\u06cc MCCB: \u06cc\u06a9 \u0631\u0627\u0647\u0646\u0645\u0627\u06cc \u0645\u0634\u062e\u0635\u0627\u062a \u0639\u0645\u0644\u06cc"},"content":{"rendered":"<p>For panel engineers and procurement teams, a schedule that lists only frame current leaves essential questions unanswered: does the proposed breaker match the fault duty, trip requirements and accessory control voltage? Those omissions can prevent a technical review from closing. The buyer&#8217;s problem is an incomplete specification, not evidence that the product family itself is unsuitable.<\/p>\n<p>Summary: A reliable molded-case circuit breaker (MCCB) specification separates rated operational voltage (U<sub>e<\/sub>)\u060c \u0648\u0644\u062a\u0627\u0698 \u0639\u0627\u06cc\u0642\u06cc (U<sub>i<\/sub>()\u060c \u0645\u0642\u0627\u0648\u0645\u062a \u062f\u0631 \u0628\u0631\u0627\u0628\u0631 \u0634\u0648\u06a9 (U<sub>imp<\/sub>), <strong>rated current<\/strong> (I<sub>n<\/sub>)\u060c \u0648 \u0638\u0631\u0641\u06cc\u062a\u200c\u0647\u0627\u06cc \u0634\u06a9\u0633\u062a\u0646 \u0646\u0647\u0627\u06cc\u06cc\/\u062e\u062f\u0645\u0627\u062a\u06cc (I<sub>cu<\/sub>\/I<sub>cs<\/sub>). Start with a load and prospective-fault study, apply IEC\u00a060947-1 and IEC\u00a060947-2 (or the destination market\u2019s adopted equivalent), then require model-specific test evidence and traceable labels before release.<\/p>\n<p>An MCCB combines a molded insulating case, contacts, terminals and an overcurrent trip mechanism. It commonly protects building feeders, motors, photovoltaic (PV) distribution and bus sections against overloads and short circuits. The <a href=\"https:\/\/w9-group.com\/fa\/blog\/ultimate-guide-to-mccb-features-and-applications\/\">\u0631\u0627\u0647\u0646\u0645\u0627\u06cc \u0648\u06cc\u0698\u06af\u06cc\u200c\u0647\u0627 \u0648 \u06a9\u0627\u0631\u0628\u0631\u062f\u0647\u0627\u06cc MCCB<\/a> provides background; the following requirements turn a catalogue request into an auditable purchase specification and a smoother commissioning record.<\/p>\n<h2>MCCB Electrical Duty Requirements<\/h2>\n<p>Record the system voltage and frequency, earthing arrangement, continuous design current, ambient temperature, installation method and prospective <strong>short-circuit current<\/strong> at the MCCB terminals. IEC\u00a060947-1 sets common terms and conditions for low-voltage switchgear; IEC\u00a060947-2 adds circuit-breaker ratings and test sequences. A frame number alone cannot establish suitability.<\/p>\n<ul>\n<li>U<sub>e<\/sub>: match the actual AC or DC operating voltage, including line-to-line and neutral arrangements.<\/li>\n<li>U<sub>i<\/sub> \u0648 U<sub>imp<\/sub>: check insulation and impulse withstand against pollution, altitude and surge exposure in the enclosure.<\/li>\n<li>I<sub>n<\/sub>: select from calculated design current after derating; do not copy a cable\u2019s headline ampacity.<\/li>\n<li>I<sub>cu<\/sub> \u0648 \u0645\u0646<sub>cs<\/sub>: I<sub>cu<\/sub> \u062a\u0648\u0627\u0646\u0627\u06cc\u06cc \u0646\u0647\u0627\u06cc\u06cc \u0642\u0637\u0639 \u06a9\u0631\u062f\u0646 \u0648\u0644\u062a\u0627\u0698 \u0627\u0633\u062a\u060c \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u0645\u0646<sub>cs<\/sub> \u0627\u06cc\u0646 \u0646\u0634\u0627\u0646 \u062f\u0647\u0646\u062f\u0647 \u0633\u0637\u062d \u0633\u0631\u0648\u06cc\u0633 \u067e\u0633 \u0627\u0632 \u062f\u0646\u0628\u0627\u0644\u0647 \u062a\u0633\u062a \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f \u0627\u0633\u062a. \u0647\u0631 \u062f\u0648 \u0628\u0627\u06cc\u062f \u062f\u0631 \u0648\u0644\u062a\u0627\u0698 \u0645\u0631\u0628\u0648\u0637 \u0627\u0639\u0644\u0627\u0645 \u0634\u0648\u0646\u062f.<\/li>\n<\/ul>\n<p>\u0628\u0631\u0627\u06cc \u0645\u0646\u0628\u0639 \u062a\u063a\u0630\u06cc\u0647 \u0633\u0647 \u0641\u0627\u0632\u060c \u062a\u0645\u0627\u0645 \u0642\u0637\u0628\u200c\u0647\u0627\u060c \u0631\u0648\u0634\u0646\u0627\u06cc\u06cc \u062e\u0646\u062b\u06cc \u0648 \u0627\u0641\u0632\u0627\u06cc\u0634 \u062f\u0645\u0627 \u062f\u0631 \u067e\u06cc\u0646\u200c\u0647\u0627 \u0631\u0627 \u0628\u0647 \u0639\u0646\u0648\u0627\u0646 \u06cc\u06a9 \u0648\u0627\u062d\u062f \u0648\u0627\u062d\u062f \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f. \u06cc\u06a9 \u0642\u0627\u0628 \u0628\u0632\u0631\u06af \u0628\u0627 \u06cc\u06a9 \u0648\u0627\u062d\u062f \u0633\u0648\u0626\u06cc\u0686\u06cc\u0646\u06af \u0646\u0627\u0645\u0646\u0627\u0633\u0628 \u0647\u0646\u0648\u0632 \u0647\u0645 \u0645\u06cc\u062a\u0648\u0627\u0646\u062f \u0627\u0644\u06a9\u062a\u0631\u0648\u062f\u200c\u0647\u0627 \u0631\u0627 \u0628\u062f\u0648\u0646 \u0645\u062d\u0627\u0641\u0638 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u06a9\u0646\u062f. \u06cc\u06a9 \u0645\u0637\u0627\u0644\u0639\u0647 \u0647\u0645\u0627\u0647\u0646\u06af\u06cc \u0632\u0645\u0627\u0646-\u0645\u0648\u062c \u0628\u0627\u06cc\u062f \u062a\u0645\u0627\u06cc\u0632 \u0628\u06cc\u0646 \u062f\u0633\u062a\u06af\u0627\u0647\u200c\u0647\u0627\u06cc \u0628\u0627\u0644\u0627\u06cc\u06cc \u0648 \u067e\u0627\u06cc\u06cc\u0646\u06cc \u0631\u0627 \u0646\u0634\u0627\u0646 \u062f\u0647\u062f.<\/p>\n<figure><img decoding=\"async\" alt=\"MCB \u0633\u0647 \u0642\u0637\u0628\u06cc \u0642\u0627\u0628\u0644 \u062a\u0646\u0638\u06cc\u0645 \u06a9\u0647 \u0628\u0631\u0627\u06cc \u062d\u0641\u0627\u0638\u062a \u0627\u0632 \u0645\u0646\u0628\u0639 \u062a\u063a\u0630\u06cc\u0647 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u0634\u0648\u062f\u060c \u0645\u0648\u0631\u062f \u0628\u0631\u0631\u0633\u06cc \u0642\u0631\u0627\u0631 \u06af\u0631\u0641\u062a.\" loading=\"lazy\" src=\"https:\/\/w9-group.com\/wp-content\/uploads\/2026\/07\/adjustable-mccb-csdm7r-800l-3300-3p-csdm7r-series-molded-case-circuit-br-gallery-01.webp\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><figcaption>\u062a\u0646\u0638\u06cc\u0645\u0627\u062a \u0642\u0627\u0628\u0644 \u062a\u0646\u0638\u06cc\u0645 \u0628\u0647 \u06a9\u0645\u06a9 \u0622\u0646 \u0627\u0645\u06a9\u0627\u0646 \u062a\u0646\u0638\u06cc\u0645 \u06cc\u06a9 MCCB \u0628\u0627 \u06a9\u0627\u0631\u06a9\u0631\u062f \u0648\u0627\u0642\u0639\u06cc \u0645\u0646\u0628\u0639 \u062a\u063a\u0630\u06cc\u0647 \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc\u200c\u06a9\u0646\u062f\u061b \u062f\u0631 \u062d\u06cc\u0646 \u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u0632\u06cc\u060c \u0628\u062a\u0648\u0627\u0646\u06cc\u062f \u0645\u0642\u0627\u062f\u06cc\u0631 \u0646\u0647\u0627\u06cc\u06cc \u0631\u0627 \u062b\u0628\u062a \u06a9\u0646\u06cc\u062f.<\/figcaption><\/figure>\n<h2>MCCB Construction Requirements<\/h2>\n<p><strong>Thermal-magnetic protection<\/strong> uses a bimetal for sustained overload and an electromagnetic release for high-current faults. Electronic trip units can add adjustable long-time, short-time, instantaneous and ground-fault functions; they also introduce control-power and verification requirements. Ask for the manufacturer\u2019s declared test configuration\u2014an accessory combination is not automatically covered because the base breaker passed a test.<\/p>\n<p>\u062c\u0632\u0626\u06cc\u0627\u062a \u0645\u06a9\u0627\u0646\u06cc\u06a9\u06cc \u0631\u0627 \u062f\u0631 \u0628\u0631\u0646\u0627\u0645\u0647 \u0632\u0645\u0627\u0646\u06cc \u0645\u0634\u0627\u0628\u0647 \u0628\u0646\u0648\u06cc\u0633\u06cc\u062f:<\/p>\n<ol>\n<li>\u0627\u0646\u062f\u0627\u0632\u0647 \u062a\u0639\u062f\u0627\u062f \u067e\u06cc\u0646\u200c\u0647\u0627\u060c \u0646\u0635\u0628 \u062b\u0627\u0628\u062a \u06cc\u0627 \u06a9\u0634\u0648\u06cc\u06cc\u060c \u062c\u0647\u062a \u0642\u0631\u0627\u0631\u06af\u06cc\u0631\u06cc \u062e\u0637\/\u0628\u0627\u0631 \u0648 \u0633\u0628\u06a9 \u062a\u0631\u0645\u06cc\u0646\u0627\u0644. \u201c\u067e\u06cc\u0646\u200c\u0647\u0627\u06cc \u0627\u0633\u062a\u0627\u0646\u062f\u0627\u0631\u062f\u201d \u0627\u0644\u0632\u0627\u0645\u06cc \u0627\u0632 \u0646\u0638\u0631 \u0645\u0647\u0646\u062f\u0633\u06cc \u0646\u06cc\u0633\u062a.<\/li>\n<li>\u062a\u0648\u0636\u06cc\u062d \u062f\u0647\u06cc\u062f \u06a9\u0647 \u0646\u0648\u0639 \u062f\u0633\u062a\u06af\u06cc\u0631\u0647\u060c \u0633\u06cc\u0633\u062a\u0645 \u0642\u0641\u0644 \u06cc\u0627 \u0627\u062a\u0635\u0627\u0644 \u0645\u062a\u0642\u0627\u0628\u0644\u060c \u0648 \u0646\u0634\u0627\u0646\u06af\u0631 ON\/OFF\/TRIP \u0686\u06cc\u0633\u062a. \u0627\u0632 \u0646\u0645\u0627\u062f\u0647\u0627 \u0648 \u0628\u0631\u0686\u0633\u0628\u200c\u0647\u0627\u06cc \u06cc\u06a9\u0633\u0627\u0646 \u06a9\u0647 \u0628\u0627 \u0646\u0642\u0634\u0647\u200c\u0647\u0627\u06cc \u067e\u0627\u0646\u0644 \u0645\u0637\u0627\u0628\u0642\u062a \u062f\u0627\u0631\u0646\u062f\u060c \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u06a9\u0646\u06cc\u062f.<\/li>\n<li>\u0645\u0648\u0627\u0631\u062f \u0644\u0648\u0627\u0632\u0645 \u062c\u0627\u0646\u0628\u06cc \u0631\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0639\u0645\u0644\u06a9\u0631\u062f \u0648 \u0648\u0644\u062a\u0627\u0698 \u06a9\u0646\u062a\u0631\u0644 \u0645\u062c\u0627\u0632\u060c \u0628\u0631 \u0627\u0633\u0627\u0633 \u06af\u0631\u0648\u0647\u06cc \u0628\u0647 \u062a\u0631\u062a\u06cc\u0628 \u0632\u06cc\u0631 \u0641\u0647\u0631\u0633\u062a \u06a9\u0646\u06cc\u062f: \u062a\u0645\u0627\u0633\u200c\u0647\u0627\u06cc \u062c\u0627\u0646\u0628\u06cc\u060c \u062a\u0645\u0627\u0633\u200c\u0647\u0627\u06cc \u0647\u0634\u062f\u0627\u0631\u060c \u0628\u0627\u0632\u0634\u062f\u0646 \u0634\u0646\u062a\u060c \u0628\u0627\u0632\u0634\u062f\u0646 \u0648\u0644\u062a\u0627\u0698 \u067e\u0627\u06cc\u06cc\u0646\u060c \u06a9\u0646\u062a\u0631\u0644\u0631 \u0645\u0648\u062a\u0648\u0631 \u06cc\u0627 \u062f\u0633\u062a\u0647 \u062f\u0627\u06cc\u0631\u0647\u200c\u0627\u06cc.<\/li>\n<li>\u062d\u062f\u0647\u0627\u06cc \u0645\u062d\u06cc\u0637\u06cc \u0628\u0631\u0627\u06cc \u062f\u0645\u0627\u060c \u0627\u0631\u062a\u0641\u0627\u0639\u060c \u0631\u0637\u0648\u0628\u062a\u060c \u062d\u0641\u0627\u0638\u062a \u062f\u0631 \u0628\u0631\u0627\u0628\u0631 \u0646\u0641\u0648\u0630 \u0645\u0627\u06cc\u0639\u0627\u062a \u0628\u0647 \u062f\u0627\u062e\u0644 \u0645\u062d\u0641\u0638\u0647 \u0648 \u0644\u0631\u0632\u0634 \u062a\u0639\u06cc\u06cc\u0646 \u06a9\u0646\u06cc\u062f\u061b \u062f\u0631 \u0635\u0648\u0631\u062a\u06cc \u06a9\u0647 \u0634\u0631\u0627\u06cc\u0637 \u0628\u0627 \u0622\u0632\u0645\u0627\u06cc\u0634\u200c\u0647\u0627\u06cc \u06a9\u0627\u062a\u0627\u0644\u0648\u06af \u0645\u062a\u0641\u0627\u0648\u062a \u0628\u0627\u0634\u062f\u060c \u0645\u0646\u062d\u0646\u06cc\u200c\u0647\u0627\u06cc \u06a9\u0627\u0647\u0634 \u062a\u0648\u0627\u0646 \u0631\u0627 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u06a9\u0646\u06cc\u062f.<\/li>\n<\/ol>\n<p>\u0644\u0648\u0627\u0632\u0645 \u062c\u0627\u0646\u0628\u06cc \u0628\u062e\u0634\u06cc \u0627\u0632 \u0631\u0648\u0627\u06cc\u062a \u06a9\u0646\u062a\u0631\u0644 \u0647\u0633\u062a\u0646\u062f. \u0622\u0632\u0627\u062f \u06a9\u0631\u062f\u0646 \u0634\u0627\u0646\u062a \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u062a\u0648\u0642\u0641 \u0627\u0636\u0637\u0631\u0627\u0631\u06cc \u0631\u0627 \u0641\u0631\u0627\u0647\u0645 \u06a9\u0646\u062f\u060c \u062f\u0631 \u062d\u0627\u0644\u06cc \u06a9\u0647 \u06cc\u06a9 \u06a9\u0646\u062a\u0627\u06a9\u062a \u062c\u0627\u0646\u0628\u06cc \u0648\u0636\u0639\u06cc\u062a \u0631\u0627 \u0628\u0647 \u06cc\u06a9 PLC \u06af\u0632\u0627\u0631\u0634 \u0645\u06cc\u200c\u062f\u0647\u062f. \u0647\u0631 \u06cc\u06a9 \u0646\u06cc\u0627\u0632 \u0628\u0647 \u06cc\u06a9 \u0646\u0645\u0648\u062f\u0627\u0631 \u0633\u06cc\u0645 \u06a9\u0634\u06cc\u060c \u062a\u0623\u06cc\u06cc\u062f \u0633\u0627\u0632\u06af\u0627\u0631\u06cc \u0648 \u06cc\u06a9 \u0646\u0642\u0637\u0647 \u062a\u0633\u062a \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u062f\u0627\u0631\u062f.<\/p>\n<p>Make the MCCB schedule a traceability matrix: each requirement should identify the exact model and complete order code, the supporting document and revision or date, and the review status. For trip adjustment, record the fitted trip unit and the catalogue page supporting its range; an <a href=\"https:\/\/w9-group.com\/fa\/blog\/advantages-of-adjustable-mccb-for-optimal-electrical-protection\/\">\u0628\u0631\u0631\u0633\u06cc \u06a9\u0644\u06cc MCCB \u0642\u0627\u0628\u0644 \u062a\u0646\u0638\u06cc\u0645<\/a> is not configuration evidence. For accessory control voltage, cite the compatible accessory code and wiring-document version. Use statuses such as accepted, clarification required or not applicable, with the reviewer and reason. Keep missing evidence open rather than treating a supplier&#8217;s generic family brochure as acceptance of the ordered configuration.<\/p>\n<h2>MCCB Lifecycle Cost Comparison<\/h2>\n<p>\u0642\u06cc\u0645\u062a \u0648\u0627\u062d\u062f\u06cc \u067e\u0627\u06cc\u06cc\u0646\u062a\u0631\u06cc\u0646 \u0642\u06cc\u0645\u062a \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0628\u0647 \u0628\u0627\u0644\u0627\u062a\u0631\u06cc\u0646 \u0647\u0632\u06cc\u0646\u0647 \u0646\u0635\u0628 \u062a\u0628\u062f\u06cc\u0644 \u0634\u0648\u062f\u060c \u062f\u0631 \u0635\u0648\u0631\u062a\u06cc \u06a9\u0647 \u067e\u0633 \u0627\u0632 \u0627\u0646\u062c\u0627\u0645 \u0628\u0631\u0631\u0633\u06cc\u200c\u0647\u0627\u06cc \u0641\u0646\u06cc\u060c \u062a\u0639\u0645\u06cc\u0631\u06a9\u0627\u0631 \u0628\u0647 \u06cc\u06a9 \u0628\u0627\u0631 \u062f\u06cc\u06af\u0631 \u0628\u0631\u0627\u06cc \u062a\u0639\u0645\u06cc\u0631 \u06cc\u0627 \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u0641\u06cc\u0632\u06cc\u06a9\u06cc \u06cc\u0627 \u0637\u0631\u0627\u062d\u06cc \u0645\u062c\u062f\u062f \u0646\u06cc\u0627\u0632 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f. \u0633\u0627\u0639\u0627\u062a \u0645\u0647\u0646\u062f\u0633\u06cc\u060c \u0641\u0636\u0627\u06cc \u067e\u0627\u0646\u0644\u060c \u0631\u0627\u0647\u0627\u0646\u062f\u0627\u0632\u06cc\u060c \u0642\u0637\u0639\u0627\u062a \u06cc\u062f\u06a9\u06cc\u060c \u0645\u062f\u0627\u0631\u06a9 \u0648 \u0645\u062f\u062a \u0632\u0645\u0627\u0646 \u0627\u0633\u062a\u0631\u0627\u062d\u062a \u0631\u0627 \u062f\u0631 \u0645\u062c\u0645\u0648\u0639 \u0647\u0632\u06cc\u0646\u0647 \u0645\u0627\u0644\u06a9\u06cc\u062a (TCO) \u0634\u0627\u0645\u0644 \u06a9\u0646\u06cc\u062f. \u0645\u0627\u062a\u0631\u06cc\u0633 \u0632\u06cc\u0631 \u0645\u0639\u06cc\u0627\u0631\u0647\u0627\u06cc \u0641\u0646\u06cc \u0648 \u062a\u062c\u0627\u0631\u06cc \u0631\u0627 \u0642\u0627\u0628\u0644 \u0645\u0634\u0627\u0647\u062f\u0647 \u0646\u06af\u0647 \u0645\u06cc\u200c\u062f\u0627\u0631\u062f.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0627\u0628\u0639\u0627\u062f \u0645\u0634\u062e\u0635\u0627\u062a<\/th>\n<th>MCCB \u062b\u0627\u0628\u062a \u067e\u0627\u06cc\u0647<\/th>\n<th>MCCB \u0642\u0627\u0628\u0644 \u062a\u0646\u0638\u06cc\u0645 \u06cc\u0627 \u0627\u0644\u06a9\u062a\u0631\u0648\u0646\u06cc\u06a9\u06cc<\/th>\n<th>\u067e\u06cc\u0627\u0645\u062f\u0647\u0627\u06cc \u062e\u0631\u06cc\u062f<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0633\u0627\u062f\u06af\u06cc \u0633\u0641\u0631<\/td>\n<td>\u067e\u0627\u0633\u062e \u062d\u0631\u0627\u0631\u062a\u06cc\/\u0645\u063a\u0646\u0627\u0637\u06cc\u0633\u06cc \u067e\u06cc\u0634\u200c\u0641\u0631\u0648\u0634<\/td>\n<td>\u0639\u0645\u0644\u06a9\u0631\u062f\u200c\u0647\u0627\u06cc \u0642\u0627\u0628\u0644 \u062a\u0646\u0638\u06cc\u0645 \u0628\u0631\u0627\u06cc \u0645\u062f\u0644\u0647\u0627\u06cc \u0645\u0631\u0628\u0648\u0637\u0647 \u062f\u0631 \u062d\u0627\u0644\u062a \u0637\u0648\u0644\u0627\u0646\u06cc\u060c \u06a9\u0648\u062a\u0627\u0647\u200c \u0648 \u0641\u0648\u0631\u06cc<\/td>\n<td>\u062a\u0646\u0638\u06cc\u0645\u0627\u062a \u0645\u06cc\u062a\u0648\u0627\u0646\u062f \u0627\u0632 \u062a\u063a\u06cc\u06cc\u0631\u0627\u062a \u0633\u062e\u062a \u0627\u0641\u0632\u0627\u0631\u06cc \u0647\u0646\u06af\u0627\u0645 \u062a\u063a\u06cc\u06cc\u0631 \u062d\u062c\u0645 \u0628\u0627\u0631 \u062c\u0644\u0648\u06af\u06cc\u0631\u06cc \u06a9\u0646\u062f\u061b \u062a\u0646\u0638\u06cc\u0645\u0627\u062a \u0628\u0627\u06cc\u062f \u062b\u0628\u062a \u0634\u0648\u0646\u062f.<\/td>\n<\/tr>\n<tr>\n<td>\u0648\u0638\u06cc\u0641\u0647 \u062e\u0637\u0627<\/td>\n<td>\u0627\u0639\u0644\u0627\u0645\u06cc\u0647 I<sub>cu<\/sub>\/I<sub>cs<\/sub> \u0628\u0627 \u0648\u0644\u062a\u0627\u0698\u0647\u0627\u06cc \u0630\u06a9\u0631 \u0634\u062f\u0647<\/td>\n<td>\u0648\u0638\u06cc\u0641\u0647 \u0645\u0634\u0627\u0628\u0647\u060c \u0639\u0644\u0627\u0648\u0647 \u0628\u0631 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a\u200c\u0647\u0627\u06cc \u0645\u0631\u062a\u0628\u0637 \u0628\u0627 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u0648\u0627\u062d\u062f \u0633\u0641\u0631<\/td>\n<td>\u0627\u0632 \u0622\u0646\u0647\u0627 \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0634\u0648\u0627\u0647\u062f \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u062f\u0642\u06cc\u0642 \u0628\u0648\u062f\u0646 \u0642\u0627\u0628\u060c \u0633\u062a\u0648\u0646\u200c\u0647\u0627 \u0648 \u062a\u0631\u06a9\u06cc\u0628\u200c\u0647\u0627\u06cc \u062a\u0639\u0644\u06cc\u0642 \u0631\u0627 \u0627\u0631\u0627\u0626\u0647 \u062f\u0647\u0646\u062f.<\/td>\n<\/tr>\n<tr>\n<td>\u06af\u0632\u0627\u0631\u0634\u200c\u06af\u06cc\u0631\u06cc<\/td>\n<td>\u062f\u0633\u062a\u06af\u06cc\u0631\u0647 \u0645\u062d\u0644\u06cc \u0628\u0627 \u06a9\u0627\u0646\u06a9\u062a\u0648\u0631 \u0627\u062e\u062a\u06cc\u0627\u0631\u06cc<\/td>\n<td>\u0627\u0637\u0644\u0627\u0639\u0627\u062a \u062a\u0645\u0627\u0633\u060c \u0647\u0634\u062f\u0627\u0631\u200c\u0647\u0627 \u0648 \u0631\u0627\u0628\u0637\u0647\u200c\u0627\u06cc \u0628\u0631\u0627\u06cc \u0627\u0646\u062f\u0627\u0632\u0647\u06af\u06cc\u0631\u06cc \u0627\u062d\u062a\u0645\u0627\u0644\u06cc<\/td>\n<td>\u06a9\u0646\u062a\u0631\u0644 \u0628\u0648\u062f\u062c\u0647\u060c \u0633\u06cc\u0645 \u06a9\u0634\u06cc\u060c \u0632\u0645\u0627\u0646 \u0631\u0627\u0647 \u0627\u0646\u062f\u0627\u0632\u06cc \u0648 \u0642\u0637\u0639\u0627\u062a \u0627\u0644\u06a9\u062a\u0631\u0648\u0646\u06cc\u06a9\u06cc \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646.<\/td>\n<\/tr>\n<tr>\n<td>\u062e\u062f\u0645\u0627\u062a \u0646\u06af\u0647\u062f\u0627\u0631\u06cc<\/td>\n<td>\u0628\u0627\u0632\u0631\u0633\u06cc \u0628\u0635\u0631\u06cc \u0648 \u06a9\u0627\u0631 \u0628\u0627 \u062f\u0633\u062a<\/td>\n<td>\u0622\u0632\u0645\u0627\u06cc\u0634\u0627\u062a \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc \u0628\u0647 \u0639\u0644\u0627\u0648\u0647 \u0628\u0631\u0631\u0633\u06cc\u200c\u0647\u0627\u06cc \u0627\u0644\u06a9\u062a\u0631\u0648\u0646\u06cc\u06a9\u06cc \u0648 \u06a9\u0645\u06a9\u200c\u06a9\u0646\u0646\u062f\u06af\u06cc<\/td>\n<td>\u0632\u0645\u0627\u0646 \u062a\u0633\u062a \u0648 \u062c\u0627\u06cc\u06af\u0632\u06cc\u0646\u06cc \u0631\u0627 \u0628\u0631 \u0627\u0633\u0627\u0633 \u0637\u0648\u0644 \u0639\u0645\u0631 \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0631\u06cc\u0632\u06cc \u06a9\u0646\u06cc\u062f.<\/td>\n<\/tr>\n<tr>\n<td>\u062a\u0643\u0627\u0645\u0644 \u067e\u0646\u0644<\/td>\n<td>\u0627\u062a\u0635\u0627\u0644\u0627\u062a \u0646\u0635\u0628 \u0648 \u0631\u0627\u0628\u0637\u200c\u0647\u0627\u06cc \u0627\u062a\u0648\u0628\u0627\u0631 \u0633\u0627\u062f\u0647<\/td>\n<td>\u062a\u0631\u0641\u0646\u062f\u0647\u0627\u06cc \u0628\u06cc\u0634\u062a\u0631 \u0648 \u0631\u0627\u0628\u0637\u200c\u0647\u0627\u06cc \u0627\u0631\u062a\u0628\u0627\u0637\u06cc \u0628\u0631\u0627\u06cc \u062a\u0623\u06cc\u06cc\u062f<\/td>\n<td>\u067e\u06cc\u0634 \u0627\u0632 \u062d\u0641\u0627\u0631\u06cc \u06cc\u0627 \u0633\u0627\u062e\u062a \u062a\u0627\u0628\u0644\u0648\u0647\u0627\u06cc \u0628\u0631\u0642\u060c \u0646\u0642\u0634\u0647\u200c\u0647\u0627\u06cc \u0627\u0628\u0639\u0627\u062f\u06cc \u0631\u0627 \u062a\u0623\u06cc\u06cc\u062f \u06a9\u0646\u06cc\u062f.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure><img decoding=\"async\" alt=\"\u0642\u0637\u0639 \u06a9\u0646\u0646\u062f\u0647 \u0645\u062f\u0627\u0631 \u0628\u0627 \u0638\u0631\u0641\u06cc\u062a \u0628\u0627\u0644\u0627 \u0628\u0631\u0627\u06cc \u062a\u0648\u0632\u06cc\u0639 \u0635\u0646\u0639\u062a\u06cc\" loading=\"lazy\" src=\"https:\/\/w9-group.com\/wp-content\/uploads\/2026\/07\/wlm6rt-1250a-3300-3p-wlm6rt-series-moulded-case-circuit-breaker400v-690v-gallery-09.webp\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><figcaption>\u0627\u0646\u062a\u062e\u0627\u0628 MCCB \u0628\u0627 \u062c\u0631\u06cc\u0627\u0646 \u0628\u0627\u0644\u0627 \u0628\u0627\u06cc\u062f \u0628\u06cc\u0646 \u0641\u0631\u06cc\u0645\u060c \u067e\u06cc\u0646\u200c\u0647\u0627 \u0648 \u0627\u0639\u0644\u0627\u0645 \u0638\u0631\u0641\u06cc\u062a \u0642\u0637\u0639\u060c \u0628\u0627 \u0633\u0637\u062d \u062e\u0637\u0627 \u0645\u062d\u0627\u0633\u0628\u0647 \u0634\u062f\u0647 \u0647\u0645\u0627\u0647\u0646\u06af \u0628\u0627\u0634\u062f.<\/figcaption><\/figure>\n<h2>Application-Specific MCCB Requirements<\/h2>\n<p>The same MCCB family can serve different loads, but acceptance evidence changes with the application. Installation rules and grid codes in the destination country determine additional obligations beyond IEC\u00a060947-2.<\/p>\n<table>\n<thead>\n<tr>\n<th>\u0627\u0637\u0644\u0627\u0639\u200c\u0646\u0627\u0645\u0647<\/th>\n<th>\u0628\u0631\u0631\u0633\u06cc\u200c\u0647\u0627\u06cc \u062f\u0642\u06cc\u0642<\/th>\n<th>\u0634\u0648\u0627\u0647\u062f \u0628\u0631\u0627\u06cc \u062f\u0631\u062e\u0648\u0627\u0633\u062a<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0633\u0627\u062e\u062a \u0641\u06cc\u062f\u0631<\/td>\n<td>\u0637\u0631\u0627\u062d\u06cc \u062c\u0631\u06cc\u0627\u0646\u060c \u062d\u0641\u0627\u0638\u062a \u0627\u0632 \u06a9\u0627\u0628\u0644 \u0648 \u062a\u0634\u062e\u06cc\u0635 \u0628\u0627 MCB<\/td>\n<td>\u062a\u0648\u067e\u0648\u0647\u0627\u06cc \u0647\u0645\u0627\u0647\u0646\u06af\u06cc\u060c \u062f\u0627\u062f\u0647\u200c\u0647\u0627\u06cc \u067e\u0627\u06cc\u0627\u0646\u06cc \u0648 \u062f\u0641\u062a\u0631\u0686\u0647 \u0631\u0627\u0647\u0646\u0645\u0627\u06cc \u0646\u0635\u0628<\/td>\n<\/tr>\n<tr>\n<td>\u062a\u063a\u0630\u06cc\u0647 \u06a9\u0646\u0646\u062f\u0647 \u0645\u0648\u062a\u0648\u0631<\/td>\n<td>\u062a\u0634\u06a9\u06cc\u0644 \u062c\u0631\u06cc\u0627\u0646 \u0648\u0631\u0648\u062f\u06cc\u060c \u06a9\u0644\u0627\u0633 \u0628\u06cc\u0634 \u0627\u0632 \u062d\u062f \u0648\u0644\u062a\u0627\u0698 \u0648 \u0647\u0645\u0627\u0647\u0646\u06af\u06cc \u0627\u062a\u0635\u0627\u0644 \u06a9\u0648\u062a\u0627\u0647<\/td>\n<td>\u062c\u062f\u0648\u0644 \u06a9\u0627\u0631\u0628\u0631\u062f \u0645\u0648\u062a\u0648\u0631 \u0648 \u062c\u0632\u0626\u06cc\u0627\u062a \u062a\u0631\u06a9\u06cc\u0628 \u062a\u0633\u062a \u0634\u062f\u0647<\/td>\n<\/tr>\n<tr>\n<td>\u062a\u0648\u0632\u06cc\u0639 PV \u06cc\u0627 DC<\/td>\n<td>\u062a\u0627\u0645\u06cc\u0646 \u0635\u062d\u06cc\u062d \u0648\u0644\u062a\u0627\u0698 DC\u060c \u0642\u0637\u0628\u06cc\u200c\u0628\u0648\u062f\u0646\u060c \u062c\u062f\u0627\u0633\u0627\u0632\u06cc \u0648 \u0645\u0633\u06cc\u0631 \u062e\u0631\u0627\u0628\u06cc<\/td>\n<td>\u062a\u0635\u0648\u06cc\u0631 \u0631\u062a\u0628\u0647\u0628\u0646\u062f\u06cc \u0648 \u0646\u0645\u0648\u062f\u0627\u0631 \u0642\u0637\u0628\u06cc\u200c\u06af\u0631\u06cc \u0645\u062e\u0635\u0648\u0635 \u062f\u06cc \u0633\u06cc\u061b \u0647\u0631\u06af\u0632 \u0646\u0628\u0627\u06cc\u062f \u0641\u0631\u0636 \u0628\u0631 \u06a9\u0627\u0631\u06a9\u0631\u062f AC \u0634\u0648\u062f<\/td>\n<\/tr>\n<tr>\n<td>\u0698\u0646\u0631\u0627\u062a\u0648\u0631 \u06cc\u0627 \u067e\u0646\u0644 \u0627\u0646\u062a\u0642\u0627\u0644<\/td>\n<td>\u0631\u0648\u0646\u062f \u0648\u0631\u0648\u062f \u062c\u0631\u06cc\u0627\u0646\u060c \u0637\u0631\u062d \u0645\u0639\u06a9\u0648\u0633 \u062c\u0631\u06cc\u0627\u0646\u060c \u0627\u062a\u0635\u0627\u0644 \u0645\u062a\u0642\u0627\u0628\u0644 \u0648 \u0633\u0648\u0626\u06cc\u0686\u06cc\u0646\u06af \u0646\u06cc\u062a\u0631\u0648<\/td>\n<td>\u062a\u0635\u0648\u06cc\u0631\u06cc \u0646\u0645\u0648\u062f\u0627\u0631 \u062e\u0637\u06cc\u060c \u0628\u0631\u0646\u0627\u0645\u0647 \u0644\u0648\u0627\u0632\u0645 \u062c\u0627\u0646\u0628\u06cc \u0648 \u0628\u0631\u0646\u0627\u0645\u0647 \u062a\u0633\u062a \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc<\/td>\n<\/tr>\n<tr>\n<td>\u0645\u0631\u0627\u06a9\u0632 \u067e\u0631\u062f\u0627\u0632\u0634 \u06cc\u0627 \u062f\u0627\u062f\u0647\u200c\u0647\u0627<\/td>\n<td>\u0627\u0646\u062a\u062e\u0627\u0628\u06af\u0631\u06cc\u060c \u0648\u0636\u0639\u06cc\u062a \u0627\u0632 \u0631\u0627\u0647 \u062f\u0648\u0631\u060c \u062a\u0646\u0638\u06cc\u0645\u0627\u062a \u0642\u0627\u0628\u0644 \u062a\u06a9\u0631\u0627\u0631 \u0648 \u0642\u0637\u0639\u0627\u062a \u06cc\u062f\u06a9\u06cc<\/td>\n<td>\u0645\u0637\u0627\u0644\u0639\u0627\u062a \u0633\u0641\u0631\u060c \u0641\u0647\u0631\u0633\u062a \u0628\u0631\u0631\u0633\u06cc \u0641\u062a\u0627 \u0648 \u0646\u0642\u0634\u0647\u200c\u0647\u0627\u06cc \u0628\u0631\u062f\u0627\u0631\u06cc \u0634\u062f\u0647 \u0628\u0627 \u0628\u0631\u0686\u0633\u0628<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<figure><img decoding=\"async\" alt=\"\u062c\u0632\u0626\u06cc\u0627\u062a \u0645\u062d\u0635\u0648\u0644 MCCB \u0628\u0627 \u0646\u0634\u0627\u0646\u0647\u200c\u062f\u0647\u0646\u062f\u0647 \u0645\u0634\u062e\u0635\u0627\u062a \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc\" loading=\"lazy\" src=\"https:\/\/w9-group.com\/wp-content\/uploads\/2026\/07\/wlm6rt-800a-3300-3p-wlm6rt-series-molded-case-circuit-breaker-breaker-40-gallery-17.webp\" style=\"display:block;width:50%;max-width:50%;height:auto;margin:0 auto\"\/><figcaption>\u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u062f\u0642\u06cc\u0642 \u0645\u062d\u0635\u0648\u0644\u060c \u0642\u0627\u0628\u0644\u06cc\u062a \u0631\u062f\u06cc\u0627\u0628\u06cc \u0631\u0627 \u0627\u0632 \u0645\u0631\u062d\u0644\u0647 \u062b\u0628\u062a \u0633\u0641\u0627\u0631\u0634 \u062a\u0627 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0648 \u062a\u0639\u0648\u06cc\u0636 \u0645\u062d\u0635\u0648\u0644\u0627\u062a \u0641\u0631\u0627\u0647\u0645 \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/figcaption><\/figure>\n<h2>MCCB Compliance Documentation<\/h2>\n<p>Compliance is a chain of evidence. IEC\u00a060947-1 is the general standard; IEC\u00a060947-2 addresses circuit breakers. The <a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66277\" rel=\"nofollow noopener\" target=\"_blank\">public scope of IEC\u00a060947-2:2024<\/a> (edition\u00a06, published 18\u00a0September\u00a02024) ordinarily covers up to 1000\u00a0V\u00a0AC or 1500\u00a0V\u00a0DC, and additionally specific circuit-breakers with additional ratings up to 1500\u00a0V\u00a0AC. This scope does not assign those ratings to every breaker. IEC\u00a060417 provides graphical symbols for operating positions. North American projects may require a product evaluated to UL\u00a0489; confirm the governing code with the engineer of record. A standard is not automatically a certification, and a test method is not permission to print an approval mark.<\/p>\n<p>\u0627\u062c\u0627\u0632\u0647 \u062f\u0647\u06cc\u062f \u0628\u0631\u0686\u0633\u0628\u200c\u0647\u0627\u06cc \u062e\u0648\u0627\u0646\u0627\u06cc\u06cc \u0631\u0648\u06cc \u0645\u062f\u0644 \u0648 U \u0648\u062c\u0648\u062f \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f<sub>e<\/sub>, \u0641\u0631\u06a9\u0627\u0646\u0633\u060c U<sub>i<\/sub>, U<sub>imp<\/sub>, I<sub>n<\/sub>, I<sub>cu<\/sub>, I<sub>cs<\/sub>, application category, reference standard, origin and disconnect indication. Package labels should repeat model, current, <strong>breaking capacity<\/strong>, manufacturing date, quantity and origin so receiving teams can maintain traceability.<\/p>\n<p>\u0645\u062c\u0645\u0648\u0639\u0647 \u0627\u0633\u0646\u0627\u062f \u0645\u0648\u0631\u062f \u0646\u06cc\u0627\u0632 \u0634\u0627\u0645\u0644 \u0686\u0647\u0627\u0631 \u0644\u0627\u06cc\u0647 \u0627\u0633\u062a:<\/p>\n<ul>\n<li>\u062f\u0641\u062a\u0631\u0686\u0647 \u0627\u0637\u0644\u0627\u0639\u0627\u062a\u06cc \u0628\u0627 \u06a9\u062f \u0633\u0641\u0627\u0631\u0634 \u06a9\u0627\u0645\u0644 \u0648 \u0627\u0645\u062a\u06cc\u0627\u0632\u0627\u062a \u062f\u0631 \u0647\u0631 \u0648\u0644\u062a\u0627\u0698 \u0627\u0639\u0644\u0627\u0645\u06cc.<\/li>\n<li>\u062f\u0633\u062a\u0647\u200c\u0628\u0646\u062f\u06cc\u060c \u06a9\u0627\u0631\u06a9\u0631\u062f \u0648 \u062a\u0639\u0645\u06cc\u0631 \u0648 \u0646\u06af\u0647\u062f\u0627\u0631\u06cc \u0628\u0627 \u0645\u0642\u0627\u062f\u06cc\u0631 \u06af\u0634\u062a\u0627\u0648\u0631 \u0648 \u0633\u06cc\u0645 \u06a9\u0634\u06cc \u0644\u0648\u0627\u0632\u0645 \u062c\u0627\u0646\u0628\u06cc.<\/li>\n<li>\u0634\u0648\u0627\u0647\u062f \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u0631\u0648\u0627\u0644 \u06cc\u0627 \u062a\u0633\u062a\u200c\u0647\u0627\u06cc \u0646\u0648\u0639\u06cc \u06a9\u0647 \u067e\u06cc\u06a9\u0631\u0628\u0646\u062f\u06cc \u062a\u0633\u062a \u0634\u062f\u0647 \u0631\u0627 \u0634\u0646\u0627\u0633\u0627\u06cc\u06cc \u0645\u06cc\u200c\u06a9\u0646\u062f.<\/li>\n<li>\u0646\u0642\u0634\u0647\u200c\u0647\u0627\u06cc \u0627\u0628\u0639\u0627\u062f\u06cc\u060c \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u0645\u0637\u0627\u0628\u0642\u062a \u062f\u0631 \u0635\u0648\u0631\u062a \u0644\u0632\u0648\u0645 \u0648 \u06cc\u06a9 \u0645\u0631\u062c\u0639 \u0631\u062f\u06cc\u0627\u0628\u06cc \u06a9\u0646\u062a\u0631\u0644 \u06a9\u06cc\u0641\u06cc\u062a \u06cc\u0627 \u062a\u0648\u0644\u06cc\u062f.<\/li>\n<\/ul>\n<p>Keep three evidence boundaries separate. Product evidence concerns the exact MCCB configuration; assembly evidence concerns its integration into the panel; installation and destination approval concern the project&#8217;s rules and accepting authority. In the same matrix, give each boundary its own requirement, order-code scope, source document\/version and review status. An accepted breaker document does not close the panel or installation rows. IEC&#8217;s public scope is not model certification or UL acceptance, and this article does not establish clause-by-clause IEC\/UL test differences. Request current, model-scoped approval evidence and destination acceptance before release; no W9 certification is established by a standards reference alone.<\/p>\n<p>\u0627\u0639\u0644\u0627\u0645\u0627\u062a \u063a\u06cc\u0631\u0645\u0633\u062a\u0646\u062f\u060c \u062e\u0637\u0631 \u062a\u062c\u0627\u0631\u06cc \u0631\u0627 \u0628\u0647 \u0647\u0645\u0631\u0627\u0647 \u062f\u0627\u0631\u0646\u062f: \u062f\u0631 \u0635\u0648\u0631\u062a\u06cc \u06a9\u0647 \u0628\u0631\u0686\u0633\u0628\u200c\u0647\u0627\u06cc \u062a\u062d\u0648\u06cc\u0644 \u062f\u0627\u062f\u0647 \u0634\u062f\u0647 \u0628\u0627 \u0628\u0631\u0646\u0627\u0645\u0647\u200c\u0628\u0627\u0632\u0627\u0631\u06cc\u0627\u0628\u06cc \u062a\u0623\u06cc\u06cc\u062f\u0634\u062f\u0647 \u0645\u0637\u0627\u0628\u0642\u062a \u0646\u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u0646\u062f\u060c \u06cc\u06a9 \u067e\u0627\u0646\u0644 \u0631\u0627 \u0631\u062f \u06a9\u0646\u0646\u062f\u060c \u0628\u0627\u0631\u06af\u06cc\u0631\u06cc \u0631\u0627 \u0628\u0631\u0627\u06cc \u0631\u0648\u0634\u0646\u200c\u0633\u0627\u0632\u06cc \u062a\u0623\u06cc\u06cc\u062f \u06a9\u0646\u0646\u062f \u06cc\u0627 \u0636\u0645\u0627\u0646\u062a \u0631\u0627 \u0645\u0648\u0631\u062f \u0627\u062e\u062a\u0644\u0627\u0641 \u0642\u0631\u0627\u0631 \u062f\u0647\u0646\u062f. \u0627\u0644\u0632\u0627\u0645\u0627\u062a \u0628\u0627\u0632\u0627\u0631 \u0645\u0642\u0635\u062f \u0648 \u0632\u0628\u0627\u0646 \u0628\u0627\u0632\u0627\u0631\u06cc\u0627\u0628\u06cc \u0631\u0627 \u0647\u0645\u0627\u0647\u0646\u06af \u0646\u06af\u0647 \u062f\u0627\u0631\u06cc\u062f.<\/p>\n<h2>\u0628\u0631\u0646\u0627\u0645\u0647 \u0628\u0631\u0631\u0633\u06cc \u0627\u0646\u062a\u062e\u0627\u0628 \u0628\u0631\u0627\u06cc \u062e\u0631\u06cc\u062f\u0627\u0631\u0627\u0646 \u0648 \u0645\u0647\u0646\u062f\u0633\u0627\u0646<\/h2>\n<p>For a broader engineering sequence, see the site&#8217;s <a href=\"https:\/\/w9-group.com\/fa\/blog\/choosing-moulded-case-circuit-breaker-for-electrical-needs\/\">\u0631\u0627\u0647\u0646\u0645\u0627\u06cc \u0627\u0646\u062a\u062e\u0627\u0628 MCCB<\/a>.<\/p>\n<ol>\n<li>\u062a\u06a9\u0645\u06cc\u0644 \u0645\u062d\u0627\u0633\u0628\u0627\u062a \u0628\u0627\u0631\u06af\u0630\u0627\u0631\u06cc \u0648 \u062e\u0637\u0627 \u0628\u0627\u0644\u0642\u0648\u0647\u061b \u0645\u0633\u062a\u0646\u062f\u0633\u0627\u0632\u06cc \u0641\u0631\u0636\u06cc\u0627\u062a\u060c \u06a9\u0627\u0647\u0634 \u062a\u0648\u0627\u0646 \u0648 \u0645\u062d\u062f\u0648\u062f\u06cc\u062a\u200c\u0647\u0627\u06cc \u0648\u0644\u062a\u0627\u0698.<\/li>\n<li>\u0627\u0646\u062a\u062e\u0627\u0628 \u0641\u0646\u0627\u0648\u0631\u06cc \u0648 \u0645\u062d\u062f\u0648\u062f\u0647 \u062a\u0646\u0638\u06cc\u0645\u060c \u0633\u067e\u0633 \u0628\u0627 \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0627\u0632 \u067e\u0631\u06cc\u0632\u200c\u0647\u0627\u06cc \u0645\u062c\u0627\u0648\u0631\u060c \u06cc\u06a9 \u0628\u0631\u0631\u0633\u06cc \u0627\u0646\u062a\u062e\u0627\u0628\u200c\u0627\u06cc\u06cc \u0631\u0627 \u0627\u062c\u0631\u0627 \u06a9\u0646\u06cc\u062f.<\/li>\n<li>\u0628\u0644\u0646\u062f\u0643\u0646\u0647\u200c\u0647\u0627\u060c \u067e\u06cc\u0646\u0647\u0627\u060c \u0627\u062a\u0635\u0627\u0644\u0627\u062a\u060c \u0644\u0648\u0627\u0632\u0645 \u062c\u0627\u0646\u0628\u06cc\u060c \u0648\u0644\u062a\u0627\u0698 \u06a9\u0646\u062a\u0631\u0644 \u0648 \u06a9\u0644\u0627\u0633 \u0645\u062d\u06cc\u0637\u06cc \u0631\u0627 \u062f\u0631 \u06cc\u06a9 \u06a9\u062f \u0633\u0641\u0627\u0631\u0634 \u062f\u0631\u062c \u06a9\u0646\u06cc\u062f.<\/li>\n<li>\u067e\u06cc\u0634 \u0627\u0632 \u062a\u062d\u0648\u06cc\u0644\u060c \u0646\u0642\u0634\u0647\u200c\u0647\u0627 \u0648 \u0628\u0633\u062a\u0647\u200c\u0647\u0627\u06cc \u0645\u062f\u0627\u0631\u06a9\u06cc \u0631\u0627 \u062a\u0623\u06cc\u06cc\u062f \u06a9\u0646\u06cc\u062f\u061b \u067e\u0633 \u0627\u0632 \u062f\u0631\u06cc\u0627\u0641\u062a\u060c \u0628\u0631\u0686\u0633\u0628\u200c\u0647\u0627 \u0648 \u0645\u0642\u062f\u0627\u0631\u200c\u0647\u0627 \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f.<\/li>\n<li>\u062a\u0646\u0638\u06cc\u0645\u0627\u062a \u0646\u0647\u0627\u06cc\u06cc \u0633\u0641\u0631 \u0631\u0627 \u062b\u0628\u062a \u06a9\u0646\u06cc\u062f \u0648 \u062f\u0631 \u062d\u06cc\u0646 \u0631\u0627\u0647\u0627\u0646\u062f\u0627\u0632\u06cc\u060c \u0628\u0631\u0631\u0633\u06cc\u200c\u0647\u0627\u06cc \u0639\u0645\u0644\u06a9\u0631\u062f\u06cc\u060c \u0639\u0627\u06cc\u0641\u06cc \u0648 \u062a\u0639\u0627\u0645\u0644 \u0631\u0627 \u0627\u0646\u062c\u0627\u0645 \u062f\u0647\u06cc\u062f.<\/li>\n<\/ol>\n<p>W9 Group\u2019s public material covers MCCBs, MCBs, RCD\/RCCBs, RCBOs, surge protective devices and contactors, but buyers should request current model-specific ratings and verify destination-market applicability.<\/p>\n<h2>\u0633\u0648\u0627\u0644\u0627\u062a \u0645\u062a\u062f\u0627\u0648\u0644<\/h2>\n<h3>\u0686\u0647 \u0627\u0631\u0632\u06cc\u0627\u0628\u06cc\u200c\u0647\u0627 \u0628\u0627\u06cc\u062f \u0631\u0648\u06cc \u0628\u0631\u0686\u0633\u0628 \u0646\u0627\u0645 MCCB \u062f\u0631\u062c \u0634\u0648\u0646\u062f\u061f<\/h3>\n<p>Verify model, U e , frequency, U i , U imp , I n , I cu , I cs , application category and disconnect marking. Confirm that breaking-capacity values are tied to the stated voltage and pole configuration.<\/p>\n<h3>\u0622\u06cc\u0627 \u06cc\u06a9 \u0642\u0627\u0628 \u0622\u0645\u067e\u0631 \u0628\u0627\u0644\u0627\u062a\u0631 \u0647\u0645\u06cc\u0634\u0647 \u0627\u06cc\u0645\u0646\u200c\u062a\u0631 \u0627\u0633\u062a\u061f<\/h3>\n<p>\u0646\u0647. \u062d\u0641\u0627\u0638\u062a \u0628\u0647 \u062a\u0646\u0638\u06cc\u0645 \u0645\u0633\u06cc\u0631\u060c \u0638\u0631\u0641\u06cc\u062a \u06a9\u0627\u0628\u0644 \u0648 \u0628\u0631\u0631\u0633\u06cc \u062e\u0631\u0627\u0628\u06cc \u0628\u0633\u062a\u06af\u06cc \u062f\u0627\u0631\u062f\u060c \u0646\u0647 \u062a\u0646\u0647\u0627 \u0628\u0647 \u0627\u0646\u062f\u0627\u0632\u0647\u0654 \u06a9\u0627\u0628\u0644. \u062a\u0646\u0638\u06cc\u0645 \u0631\u0627 \u0628\u0627 \u06a9\u0627\u0628\u0644\u200c\u0647\u0627\u06cc \u067e\u0627\u06cc\u06cc\u0646\u200c\u062f\u0633\u062a \u0647\u0645\u0627\u0647\u0646\u06af \u06a9\u0646\u06cc\u062f \u0648 \u062f\u0631\u062c\u0647 \u0645\u0642\u0627\u0648\u0645\u062a \u062f\u0631 \u0628\u0631\u0627\u0628\u0631 \u0648\u0644\u062a\u0627\u0698 \u0642\u0637\u0639 \u0631\u0627 \u0628\u0631\u0631\u0633\u06cc \u06a9\u0646\u06cc\u062f.<\/p>\n<h3>\u0622\u06cc\u0627 MCB \u0647\u0627\u06cc AC \u0648 DC \u0627\u0632 \u0647\u0645\u0627\u0646 \u0645\u0634\u062e\u0635\u0627\u062a \u0627\u0633\u062a\u0641\u0627\u062f\u0647 \u0645\u06cc\u200c\u06a9\u0646\u0646\u062f\u061f<\/h3>\n<p>\u0646\u0647. \u0627\u062e\u062a\u0644\u0627\u0644 \u062c\u0631\u06cc\u0627\u0646 DC \u062f\u0627\u0631\u0627\u06cc \u0631\u0641\u062a\u0627\u0631 \u0642\u0648\u0633 \u0645\u062a\u0641\u0627\u0648\u062a\u06cc \u0627\u0633\u062a \u0648 \u0645\u0645\u06a9\u0646 \u0627\u0633\u062a \u0645\u062d\u062f\u0648\u062f\u06cc\u062a\u0647\u0627\u06cc \u0642\u0637\u0628\u06cc\u060c \u0642\u0637\u0628\u06cc \u0633\u0631\u06cc \u0648 \u0648\u0644\u062a\u0627\u0698 \u0644\u0627\u0632\u0645 \u0631\u0627 \u062f\u0627\u0634\u062a\u0647 \u0628\u0627\u0634\u062f \u06a9\u0647 \u0628\u0631\u0627\u06cc \u062c\u0631\u06cc\u0627\u0646 AC \u06a9\u0627\u0631\u0628\u0631\u062f \u0646\u062f\u0627\u0631\u0646\u062f. \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u06cc\u06a9 \u0627\u0639\u0644\u0627\u0645\u06cc\u0647 \u0648 \u0646\u0645\u0648\u062f\u0627\u0631 \u0645\u062e\u0635\u0648\u0635 \u062c\u0631\u06cc\u0627\u0646 DC \u0631\u0627 \u0627\u0631\u0627\u0626\u0647 \u062f\u0647\u06cc\u062f\u061b \u0647\u0631\u06af\u0632 \u0628\u062f\u0648\u0646 \u0628\u0631\u0631\u0633\u06cc \u062f\u0642\u06cc\u0642\u060c \u0631\u062a\u0628\u0647 \u062c\u0631\u06cc\u0627\u0646 AC \u0631\u0627 \u0627\u0646\u062a\u0642\u0627\u0644 \u0646\u062f\u0647\u06cc\u062f.<\/p>\n<h3>\u06a9\u062f\u0627\u0645 \u0644\u0648\u0627\u0632\u0645 \u062c\u0627\u0646\u0628\u06cc \u0628\u0627\u06cc\u062f \u062f\u0631 \u0633\u0641\u0627\u0631\u0634 \u062e\u0631\u06cc\u062f \u06af\u0646\u062c\u0627\u0646\u062f\u0647 \u0634\u0648\u0646\u062f\u061f<\/h3>\n<p>\u0641\u0642\u0637 \u062a\u0627\u0628\u0639\u0627\u062a\u06cc \u0631\u0627 \u06a9\u0647 \u062f\u0631 \u0634\u0631\u062d \u06a9\u0646\u062a\u0631\u0644 \u0630\u06a9\u0631 \u0634\u062f\u0647 \u0627\u0633\u062a\u060c \u0634\u0627\u0645\u0644 \u06a9\u0646\u06cc\u062f \u2014 \u0645\u0627\u0646\u0646\u062f \u06a9\u0627\u0646\u06a9\u062a\u0648\u0631\u0647\u0627\u06cc \u062c\u0627\u0646\u0628\u06cc \u06cc\u0627 \u0647\u0634\u062f\u0627\u0631 \u062f\u0647\u0646\u062f\u0647\u060c \u0622\u0632\u0627\u062f \u06a9\u0631\u062f\u0646 \u0634\u0646\u062a\u060c \u0622\u0632\u0627\u062f \u06a9\u0631\u062f\u0646 \u0648\u0644\u062a\u0627\u0698 \u067e\u0627\u06cc\u06cc\u0646 \u06cc\u0627 \u0627\u067e\u0631\u0627\u062a\u0648\u0631 \u0645\u0648\u062a\u0648\u0631 \u2014 \u0627\u0645\u0627 \u0647\u0631 \u0648\u0644\u062a\u0627\u0698 \u06a9\u0646\u062a\u0631\u0644\u06cc \u0648 \u062a\u0631\u062a\u06cc\u0628 \u0642\u0631\u0627\u0631\u06af\u06cc\u0631\u06cc \u06a9\u0627\u0646\u06a9\u062a\u0648\u0631 \u0631\u0627 \u0630\u06a9\u0631 \u06a9\u0646\u06cc\u062f. \u0628\u0631\u0627\u06cc \u0642\u0627\u0628 \u062f\u0642\u06cc\u0642 MCCB\u060c \u0627\u0632 \u0646\u0645\u0648\u062f\u0627\u0631 \u0633\u06cc\u0645 \u06a9\u0634\u06cc \u0648 \u062a\u0623\u06cc\u06cc\u062f \u0633\u0627\u0632\u06af\u0627\u0631\u06cc \u062f\u0631\u062e\u0648\u0627\u0633\u062a \u06a9\u0646\u06cc\u062f.<\/p>\n<h3>\u0686\u0647 \u0645\u062f\u0627\u0631\u06a9\u06cc \u0628\u0627\u06cc\u062f \u0628\u0627 \u0647\u0631 \u0628\u0627\u0631 \u0627\u0631\u0633\u0627\u0644 MCCB \u0647\u0645\u0631\u0627\u0647 \u0628\u0627\u0634\u062f\u061f<\/h3>\n<p>\u062f\u0631\u062e\u0648\u0627\u0633\u062a \u06a9\u0646\u06cc\u062f \u06a9\u0647 \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u062c\u0632\u0626\u06cc\u0627\u062a\u060c \u062f\u0641\u062a\u0631\u0686\u0647 \u0631\u0627\u0647\u0646\u0645\u0627\u060c \u0646\u0642\u0634\u0647\u200c\u0647\u0627\u060c \u0627\u0637\u0644\u0627\u0639\u0627\u062a \u0645\u0631\u0628\u0648\u0637 \u0628\u0647 \u0627\u0646\u0637\u0628\u0627\u0642\u060c \u0634\u0648\u0627\u0647\u062f \u0622\u0632\u0645\u0627\u06cc\u0634\u200c\u0647\u0627\u06cc \u0645\u0631\u0628\u0648\u0637\u0647 \u0648 \u0628\u0631\u0686\u0633\u0628\u200c\u0647\u0627\u06cc \u0645\u062f\u0644 \u06cc\u0627 \u062a\u0648\u0644\u06cc\u062f\u06cc \u0642\u0627\u0628\u0644 \u0631\u062f\u06cc\u0627\u0628\u06cc \u0627\u0631\u0627\u0626\u0647 \u0634\u0648\u0646\u062f. \u062a\u06cc\u0645 \u062f\u0631\u06cc\u0627\u0641\u062a\u06a9\u0646\u0646\u062f\u0647 \u0628\u0627\u06cc\u062f \u0627\u06cc\u0646 \u0627\u0633\u0646\u0627\u062f \u0631\u0627 \u0642\u0628\u0644 \u0627\u0632 \u0646\u0635\u0628 \u0628\u0627 \u06a9\u062f \u0633\u0641\u0627\u0631\u0634 \u062a\u0627\u06cc\u06cc\u062f\u0634\u062f\u0647 \u0645\u0642\u0627\u06cc\u0633\u0647 \u06a9\u0646\u0646\u062f.<\/p>\n<h2>\u0645\u0646\u0627\u0628\u0639<\/h2>\n<ul>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/66277\" rel=\"nofollow noopener\" target=\"_blank\">IEC 60947-2:2024 \u2014 circuit-breaker product scope<\/a>.<\/li>\n<li><a href=\"https:\/\/webstore.iec.ch\/en\/publication\/32338\" rel=\"nofollow noopener\" target=\"_blank\">IEC 61439-1:2020 \u2014 low-voltage assembly general rules<\/a>.<\/li>\n<li><a href=\"https:\/\/www.nfpa.org\/codes-and-standards\/nfpa-70-standard-development\/70\" rel=\"nofollow noopener\" target=\"_blank\">NFPA 70 \u2014 U.S. installation-code development and scope<\/a>.<\/li>\n<\/ul>\n<p>The difference is not only the ampere number\u2014it is the evidence connecting duty, interruption, installation and maintenance. When your schedule is ready, review W9 Group\u2019s MCCB range against the same transparent checklist, then contact the technical team for a project-specific datasheet and compliance pack.<\/p>\n<p>To review the proposed configuration, <a href=\"https:\/\/w9-group.com\/fa\/contact-us\/\">contact W9 Group<\/a> with the load schedule, available fault current and destination-market requirements.<\/p>","protected":false},"excerpt":{"rendered":"<p>\u0628\u0631\u0627\u06cc \u067e\u0631\u0648\u0698\u0647\u200c\u0647\u0627\u06cc \u06a9\u0645 \u0648\u0644\u062a\u0627\u0698 \u0627\u06cc\u0645\u0646 \u0648 \u0645\u0642\u0631\u0648\u0646 \u0628\u0647 \u0635\u0631\u0641\u0647\u060c MCCB \u0628\u0627 \u0631\u062a\u0628\u0647\u0628\u0646\u062f\u06cc\u200c\u0647\u0627\u06cc \u0645\u0646\u0627\u0633\u0628\u060c \u0633\u06cc\u0633\u062a\u0645 \u062a\u0648\u0642\u0641\u060c \u0644\u0648\u0627\u0632\u0645 \u062c\u0627\u0646\u0628\u06cc\u060c \u062a\u0633\u062a\u200c\u0647\u0627 \u0648 \u0645\u062f\u0627\u0631\u06a9 \u062a\u0623\u06cc\u06cc\u062f\u06cc\u0647\u200c\u0627\u06cc \u0631\u0627 \u0645\u0634\u062e\u0635 \u06a9\u0646\u06cc\u062f.<\/p>","protected":false},"author":1,"featured_media":3708,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"class_list":["post-3707","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"blocksy_meta":{"styles_descriptor":{"styles":{"desktop":"","tablet":"","mobile":""},"google_fonts":[],"version":8}},"acf":[],"_links":{"self":[{"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/posts\/3707","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/comments?post=3707"}],"version-history":[{"count":4,"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/posts\/3707\/revisions"}],"predecessor-version":[{"id":4756,"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/posts\/3707\/revisions\/4756"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/media\/3708"}],"wp:attachment":[{"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/media?parent=3707"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/categories?post=3707"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/w9-group.com\/fa\/wp-json\/wp\/v2\/tags?post=3707"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}