MCCB circuit breaker WLM6-400A-3300 3P/4P WLM6 Series 400vac Thermal magnetic type moulded case circuit breaker 400V/690V 400A 3/4 Poles
TECHNICAL DATA
WLM6 400A Thermal-Magnetic MCCB Specifications
W9 Group lists WLM6 400 A as a thermal-magnetic molded case circuit breaker (MCCB), with 3P or 4P options and catalog working voltages of 400 V and 690 V. Specify the current, pole arrangement and trip-unit configuration required by the distribution circuit.
| Product series | WLM6 | |
|---|---|---|
| Catalog current (A) | 400 | |
| Trip-unit type | thermal-magnetic | |
| Listed poles | 3P / 4P; confirm the quoted configuration | |
| Catalog working voltage (V) | 400/690; confirm the selected device rating | |
| Catalog trip-unit current schedule (A), at 40℃ | 250-315-350-400; confirm the offered variant | |
| Insulation voltage Ui (V) | 1000 | |
| Impulse withstand voltage (kV) | 8 | |
| Width entry (mm), width (3p/4p) | 140/184 | |
| Height entry (mm) | 257 | |
| Depth entry (mm) | 103/111(q type) | |
SELECTION GUIDE
Selecting a 400A Thermal-Magnetic MCCB with 3P or 4P Options
Specify the required 400 A configuration, pole arrangement, supply voltage, short-circuit duty, trip-unit settings and installation requirements when requesting a WLM6 quotation from W9 Group.
Specify the current and poles
Use WLM6 400 A in the enquiry and state the required 3P or 4P arrangement. Confirm the rated current and full order code on the quotation.
Check fault duty at the supply voltage
State the supply voltage and prospective short-circuit current. Request the selected capacity code and its ultimate and service breaking ratings.
Match the trip unit
Request the thermal-magnetic time-current curve and confirm that it matches the load and upstream protection.
Check panel integration
Request a dimension drawing for the selected pole and trip-unit configuration.
ABOUT W9 GROUP
W9 Group 400A Thermal-Magnetic MCCB Supply and Support
Zhejiang W9 Group Technology Co., Ltd. supplies low-voltage electrical products. For a WLM6 order, contact W9 Group about the required configuration and product documents.

RELATED RESOURCES
WLM6 400A MCCB Datasheet and Wiring Diagram Requests
Use W9 Group’s MCCB guide and product directory for context. Request a datasheet and wiring diagram matching the selected WLM6 configuration.
BUYER FAQ
WLM6 400A MCCB FAQs: Trip Unit, Ratings and Panel Fit
Find answers about ratings, trip-unit configuration and installation documents.
What configuration does the WLM6 400 A page list?
The catalog lists a 400 A current designation, 3P or 4P options and working voltages of 400 V and 690 V. Confirm the exact configuration and its marked ratings before ordering.
How should I specify the WLM6 trip unit?
Request the matching trip curve and coordination data for the selected device.
How can I verify the WLM6 400 A panel dimensions?
The depth entry for WLM6 400 A is 103/111(q type) (mm). Confirm the depth and any suffix-dependent dimensions on the installation drawing.
PRODUCT ENQUIRY
Request a WLM6 400A Thermal-Magnetic MCCB Quotation
Tell W9 Group your required 400 A configuration, pole arrangement, supply voltage, short-circuit duty, trip-unit settings and installation requirements, quantity and destination market so the selected configuration can be identified.






































