WLM7DC-400 DC MCCB
TECHNICAL DATA
WLM7DC-400 2 Pole DC Molded Case Circuit Breaker Specifications
W9 Group lists the WLM7DC-400 DC MCCB for direct-current circuit protection. This page covers the 400 A, 2-pole version identified in the product summary. Choose the ordered current and obtain the voltage-specific DC breaking-capacity data before specifying the breaker.
| Product model | WLM7DC-400 |
|---|---|
| Product category | DC molded case circuit breaker |
| Summary configuration | 400 A, 2P |
| Frame current schedule | 250, 280, 315, 320, 350, 400 A |
| Insulation voltage Ui | 1500 V |
| Impulse withstand voltage Uimp | 12 kV |
| Operating voltage and breaking capacity | Confirm the DC voltage and corresponding Icu / Ics for the offered 2P configuration |
| Connection requirements | Confirm polarity and the manufacturer’s pole connection diagram |
SELECTION GUIDE
How to Select a 400A DC MCCB for a 2 Pole Circuit
Specify the DC operating voltage, required current, 2P order code, fault level and connection arrangement when requesting a WLM7DC-400 quotation from W9 Group.
Specify DC circuit conditions
State maximum system voltage, fault current and source arrangement. Request DC ratings for the exact pole connection.
Choose the ordered current
The 400 frame schedule lists 250, 280, 315, 320, 350, 400 A. Confirm the required current and trip-unit version.
Coordinate fault interruption
Confirm Icu and Ics at the intended DC operating voltage rather than using the insulation voltage as the operating rating.
Check panel integration
Request dimensions, terminals and the installation drawing for the quoted 2P version. Confirm accessories separately.
ABOUT W9 GROUP
W9 Group DC MCCB Supply and Support
Zhejiang W9 Group Technology Co., Ltd. supplies low-voltage electrical products. For a WLM7DC-400 enquiry, contact W9 Group about configuration and matching product documents.
RELATED RESOURCES
WLM7DC-400 DC MCCB Datasheet and Wiring Information
Use W9 Group technical support and the product directory to specify WLM7DC-400. Request a datasheet and wiring diagram matching the selected WLM7DC-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 WLM7DC-400 variant
BUYER FAQ
WLM7DC-400 DC MCCB FAQs: Current, Voltage and Fault Rating
Find answers about WLM7DC-400 selection, configuration and ordering.
Which configuration does this WLM7DC-400 page cover?
The product summary identifies 400 A and 2P. The frame schedule contains several current choices, so confirm the full order code and selected current.
What current options are listed for WLM7DC-400?
The target-page frame schedule lists 250, 280, 315, 320, 350, 400 A. These are catalog choices rather than one adjustable range guaranteed for every trip unit.
Can the insulation voltage be used as the DC operating voltage?
No. The listed insulation voltage describes insulation performance. Confirm the separate DC operating voltage, pole arrangement and breaking capacity from the matching datasheet.
How should I choose DC breaking capacity?
Provide the system voltage and prospective fault current. Ask W9 Group for Icu and Ics at that voltage and for the required connection arrangement.
Is the AC voltage table sufficient for DC selection?
No. Some target-page table headings are inconsistent. Confirm the dedicated DC rating schedule and wiring diagram for the offered breaker.
Does this breaker include remote monitoring?
A supported interface is not established for this exact configuration. Confirm any communication accessory, auxiliary supply and interface documentation before including remote monitoring in the specification.
What is needed for a WLM7DC-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 Quote for the WLM7DC-400 DC MCCB
Tell W9 Group your DC operating voltage, required current, 2P order code, fault level and connection arrangement, quantity and destination market so the selected configuration can be identified.