WLM6EY-400 electronic MCCB
TECHNICAL DATA
WLM6EY-400 3 Pole and 4 Pole Electronic MCCB Specifications
The WLM6EY-400 electronic MCCB is listed by W9 Group with an LCD display and Modbus RS485 communication. The 400 A frame is offered in 3-pole and 4-pole configurations for AC distribution. Specify the trip settings and communication requirements with the selected order code.
| WLM6EY Moulded Case Circuit Breaker | 400 | |||||||||||||
| Rated operating current In (A),40℃ | 6 adjutable knobs | 200-225-250-280-300-320-350-375-400 | ||||||||||||
| 3 adjutable knobs | 200-225-250-280-300-320-350-375-400 | |||||||||||||
| Electric characteristics | ||||||||||||||
| Rated insulation voltage Ui (V) | 1000 | |||||||||||||
| Rated impulse withstand voltage (kV) | 8 | |||||||||||||
| Rated operational voltage Ue(V),AC 50/60Hz | 380/400/415,440,500,660/690 | |||||||||||||
| Breaking capacity code | C | S | M | H | Q | |||||||||
| Number of poles | 1P | – | – | – | – | – | ||||||||
| 2P | – | – | – | – | – | |||||||||
| 3P | – | – | ■ | ■ | ■ | |||||||||
| 4P | – | – | ■ | ■ | ■ | |||||||||
| Number of poles | AC220/230/240V | – | – | – | – | – | ||||||||
| AC380/400/415V | – | – | 70 | 100 | 150 | |||||||||
| AC440V | – | – | – | – | – | |||||||||
| AC500V | – | – | – | – | 65 | |||||||||
| AC660/690V | – | – | 8 | 8 | 20 | |||||||||
| Number of poles | AC220/230/240V | – | – | – | – | – | ||||||||
| AC380/400/415V | – | – | 50 | 70 | 150 | |||||||||
| AC440V | – | – | – | – | – | |||||||||
| AC500V | – | – | – | – | 65 | |||||||||
| AC660/690V | – | – | 8 | 8 | 20 | |||||||||
| Rated short-time withstand current Icw (kA,1s) | 10 | |||||||||||||
| Standard | IEC/EN 60947-2 | |||||||||||||
| Utilization category | B | |||||||||||||
| Ambient temperature | -40℃ ~+70 ℃ 2) |
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| Safety of insulation | ■ | |||||||||||||
| Arcing distance | 0 | |||||||||||||
|
Mechanical life (CO recycle) |
Maintenance | 15000 | ||||||||||||
|
Electrical life (CO recycle) |
AC415V,In | 8000 | ||||||||||||
| AC690V,In | 2000 | |||||||||||||
| Release units | ||||||||||||||
| Distribution protection | E | ■ | ||||||||||||
| Motor protection | E | ■ | ||||||||||||
| Mounting and connection | ||||||||||||||
| Fixed | Front connection | ■ | ||||||||||||
| Rear connection | ■ | |||||||||||||
| Plug-in | Front connection | ■ | ||||||||||||
| Rear connection | ■ | |||||||||||||
| Draw-out | Front connection | – | ||||||||||||
| Rear connection | – | |||||||||||||
| DIN rail | Front connection | ■ | ||||||||||||
| Dimension | ||||||||||||||
|
Dimension (mm) W×H×D |
Width (3P/4P) | 140/184 | ||||||||||||
| Height | 257 | |||||||||||||
| Depth | 103 | |||||||||||||
| Weight | ||||||||||||||
| Distribution protection | 1P | – | ||||||||||||
| 2P | – | |||||||||||||
| 3P | 4.922 | |||||||||||||
| 4P | 6.543 | |||||||||||||
SELECTION GUIDE
Selecting a 400A Electronic MCCB with Modbus RS485
Specify the frame and ordered current, 3P or 4P, operating voltage, fault level, trip settings and Modbus requirements when requesting a WLM6EY-400 quotation from W9 Group.
Match the current and frame
The 400 A frame has a published current schedule of 200, 225, 250, 280, 300, 320, 350, 375, 400 A. Confirm the ordered rating and actual adjustment limits.
Choose poles and fault duty
Specify 3P or 4P, the operating voltage and prospective short-circuit current. Request the matching Icu / Ics table.
Define the trip settings
Request the exact trip-unit function list, setting ranges and time-current curves. Confirm ground-fault protection separately.
Plan the RS485 connection
Confirm the Modbus register map, communication settings, auxiliary-power requirements and controller compatibility before integration.
ABOUT W9 GROUP
W9 Group Electronic MCCB Supply and Support
Zhejiang W9 Group Technology Co., Ltd. supplies low-voltage electrical products. For a WLM6EY-400 enquiry, contact W9 Group about configuration and matching product documents.
RELATED RESOURCES
WLM6EY-400 LCD Display MCCB and Modbus RS485 Information
Use W9 Group technical support and the product directory to specify WLM6EY-400. Request a datasheet and wiring diagram matching the selected WLM6EY-400 configuration.
PRODUCT DIRECTORYExplore W9 Group productsBrowse W9 Group models and request the specifications of the selected product
DOCUMENTSW9 Group download centreRequest the current document for your quoted WLM6EY-400 variant
BUYER FAQ
WLM6EY-400 Electronic MCCB FAQs: Settings and Communication
Find answers about WLM6EY-400 selection, configuration and ordering.
What is the WLM6EY-400 used for?
W9 Group lists this 400 A-frame electronic molded case circuit breaker for AC circuit protection, with LCD indication and a Modbus RS485 interface.
Is every WLM6EY-400 supplied at 400 A?
No. 400 A identifies the frame described on this page; the published current schedule includes 200, 225, 250, 280, 300, 320, 350, 375, 400 A. Confirm the selected rating and trip-unit adjustment range.
Which pole and voltage options are listed?
The summary lists 3P / 4P and 400 / 690 V. Breaking capacity depends on the voltage and variant code; confirm the complete combination in the supplied datasheet.
What does the LCD display show?
An LCD display is listed. Confirm the available measurements, fault indications and display menus for the exact trip-unit version instead of assuming every series feature is included.
Can the Modbus RS485 interface connect directly to my controller?
The interface is listed, but integration requires the matching register map, address and serial settings. Confirm auxiliary power and controller support with W9 Group.
Does communication provide remote closing or every protection function?
An RS485 interface alone does not establish remote closing or a complete protection-function set. Confirm the operating mechanism, accessories, trip functions and settings in the offered configuration.
What is needed for a WLM6EY-400 quotation?
Send the required configuration, quantity, destination market and document requirements. Ask W9 Group to confirm price, minimum order quantity, samples and lead time for the selected configuration.
PRODUCT ENQUIRY
Request a WLM6EY-400 Electronic MCCB Quotation
Tell W9 Group your frame and ordered current, 3P or 4P, operating voltage, fault level, trip settings and Modbus requirements, quantity and destination market so the selected configuration can be identified.