{"id":2385,"date":"2026-07-30T11:28:59","date_gmt":"2026-07-30T03:28:59","guid":{"rendered":"https:\/\/eqsvq3fzct.wpdns.site\/product\/wlm6ly-250a-4300-4p-wlm6l-series-earth-leakage-protection-type-residual-current-circuit-breaker-400v-2\/"},"modified":"2026-07-30T11:29:02","modified_gmt":"2026-07-30T03:29:02","slug":"wlm6ly-250a-4300-4p-wlm6l-series-earth-leakage-protection-type-residual-current-circuit-breaker-400v-2","status":"publish","type":"product","link":"https:\/\/w9-group.com\/ja\/product\/wlm6ly-250a-4300-4p-wlm6l-series-earth-leakage-protection-type-residual-current-circuit-breaker-400v-2\/","title":{"rendered":"MCCB circuit breaker WLM6LY-800A-4300 4P WLM6L Series earth leakage protection type RCCB 400V 800A 3 poles 4 Poles"},"content":{"rendered":"

\nFunction of RCCB
\n<\/h2>\n

Ground Fault Protection: RCCBs are specifically designed to provide protection against ground faults by detecting and interrupting current leakage to the ground. This function is crucial in preventing electric shock and ensuring the safety of individuals working with or around electrical equipment.
\nSensitivity Adjustment: Some RCCBs are equipped with adjustable sensitivity settings, allowing users to customize the device\u2019s response to leakage currents. This feature enables the RCCB to cater to specific applications and environments where different levels of sensitivity may be required.<\/p>\n

\nMain performance index of WLM6LY series circuit breaker
\n<\/h2>\n\n\n\n\n\n<\/tr>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
\nWLM6LY\u00a0 Moulded Case Circuit Breaker<\/td>\n800<\/td>\n<\/tr>\n
Rated current (A) of circuit breaker 40\u2103<\/td>\nFix type<\/td>\n500-630-700-800<\/td>\n<\/tr>\n
Lcd type<\/td>\n500-630-700-800<\/td>\n<\/tr>\n
Rated insulation voltage Ui (V)<\/td>\n1000<\/td>\n<\/tr>\n
Rated impulse withstand voltage (kV)<\/td>\n8<\/td>\n<\/tr>\n
Rated operational voltage Ue(V),AC 50\/60Hz<\/td>\nAC400(3P, 3P+N, 4P)<\/td>\n<\/tr>\n
Breaking capacity code<\/td>\nC<\/td>\nS<\/td>\nM<\/td>\nH<\/td>\n<\/tr>\n
Number of poles<\/td>\n2P<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n–<\/td>\n<\/tr>\n
3P<\/td>\n–<\/td>\n–<\/td>\n\u25a0<\/td>\n\u25a0<\/td>\n<\/tr>\n
4P<\/td>\n–<\/td>\n–<\/td>\n\u25a0<\/td>\n\u25a0<\/td>\n<\/tr>\n
\nRated ultimate
\nshort-circuit breaking
\ncapacity Icu (kA)\n<\/td>\n		AC380\/400\/415V<\/td>\n–<\/td>\n–<\/td>\n50<\/td>\n65<\/td>\n<\/tr>\n
AC380\/400\/415V<\/td>\n–<\/td>\n–<\/td>\n35<\/td>\n50<\/td>\n<\/tr>\n
\nRated residual making and breaking capacity
\nI\u25b3 m(kA)\n<\/td>\n		AC220\/230\/240V<\/td>\n–<\/td>\n–<\/td>\n16.25<\/td>\n16.25<\/td>\n<\/tr>\n
Limit non-actuating time \u25b3 t (ms)<\/td>\n0.06s\/0.2s\/0.5s\/1s<\/td>\n<\/tr>\n
Leakage alarm non-tripping function<\/td>\n\u25a1<\/td>\n<\/tr>\n
overcurrent tripping type<\/td>\nThemal type<\/td>\n<\/tr>\n
Leakage tripping type<\/td>\nElectronic Type<\/td>\n<\/tr>\n
Residual current type<\/td>\nAC<\/td>\n<\/tr>\n
Standard<\/td>\nIEC\/EN 60947-2<\/td>\n<\/tr>\n
Utilization category<\/td>\nA<\/td>\n<\/tr>\n
Ambient temperature<\/td>\n-40\u2103 ~+70 \u2103<\/td>\n<\/tr>\n
Safety of insulation<\/td>\n\u25a0<\/td>\n<\/tr>\n
Arcing distance<\/td>\n0<\/td>\n<\/tr>\n
\nMechanical life
\n(CO recycle)\n<\/td>\n		Maintenance<\/td>\n15000<\/td>\n<\/tr>\n
\nElectrical life
\n(CO recycle)\n<\/td>\n		AC415V,In<\/td>\n8000<\/td>\n<\/tr>\n
AC690V,In<\/td>\n2000<\/td>\n<\/tr>\n
Release units<\/td>\n<\/tr>\n
Mounting and connection<\/td>\n<\/tr>\n
Fixed<\/td>\nFront connection<\/td>\n\u25a0<\/td>\n<\/tr>\n
Rear connection<\/td>\n\u25a0<\/td>\n<\/tr>\n
Plug-in<\/td>\nFront connection<\/td>\n\u25a0<\/td>\n<\/tr>\n
Rear connection<\/td>\n\u25a0<\/td>\n<\/tr>\n
Draw-out\n<\/td>\nFront connection<\/td>\n–<\/td>\n<\/tr>\n
Rear connection<\/td>\n–<\/td>\n<\/tr>\n
DIN rail<\/td>\nFront connection<\/td>\n\u25a0<\/td>\n<\/tr>\n
Dimension<\/td>\n<\/tr>\n
\nDimension (mm)
\nW\u00d7H\u00d7D\n<\/td>\n		Width (2P\/3P\/4P)<\/td>\n210\/280<\/td>\n<\/tr>\n
Height<\/td>\n275.5<\/td>\n<\/tr>\n
Depth<\/td>\n103<\/td>\n<\/tr>\n
Weight<\/td>\n<\/tr>\n
Distribution protection<\/td>\n2P<\/td>\n–<\/td>\n<\/tr>\n
3P<\/td>\n8.473<\/td>\n<\/tr>\n
4P<\/td>\n11.245<\/td>\n<\/tr>\n<\/tbody>\n<\/table>","protected":false},"excerpt":{"rendered":"

Rated Current : 800A Number Of Poles : 3P\/4P Rated Working Voltage : 400V\/690V<\/p>","protected":false},"featured_media":2386,"comment_status":"open","ping_status":"closed","template":"","meta":{"_acf_changed":false},"product_brand":[],"product_cat":[79,178],"product_tag":[],"class_list":["post-2385","product","type-product","status-publish","has-post-thumbnail","product_cat-rccb","product_cat-wlm6ly","first","instock","shipping-taxable","product-type-simple"],"acf":[],"_links":{"self":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/product\/2385","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/types\/product"}],"replies":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/comments?post=2385"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/media\/2386"}],"wp:attachment":[{"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/media?parent=2385"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/product_brand?post=2385"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/product_cat?post=2385"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/w9-group.com\/ja\/wp-json\/wp\/v2\/product_tag?post=2385"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}