WLM8-400H-4300 thermal magnetic MCCB
TECHNICAL DATA
WLM8-400H-4300 Thermal Magnetic MCCB: 400 A, 4P Configuration
The WLM8-400H-4300 thermal magnetic MCCB is listed by W9 Group as a 400 A, 4P molded case circuit breaker for overload and short-circuit protection. Match the thermal and magnetic release characteristics to the load and distribution-panel fault duty. Request the exact time-current curve, voltage-specific capacity and installation drawing.
| Product model | WLM8-400H-4300 |
|---|---|
| Product category | Thermal-magnetic molded case circuit breaker |
| Current designation | 400 A |
| Poles | 4P |
| Protection | Thermal and magnetic overcurrent release |
| Trip characteristic | Confirm fixed or adjustable settings and the exact time-current curve |
| Fault rating | Confirm operating-voltage-specific Icu and Ics |
SELECTION GUIDE
How to Select WLM8-400H-4300 Thermal Magnetic MCCB Trip Curves and Fault Duty
Specify the model, required current, poles, circuit voltage, load starting duty and prospective fault current when requesting a WLM8-400H-4300 quotation from W9 Group.
Match the load and release
Specify the load current, starting behavior and coordination needs. Request the thermal pickup and magnetic trip characteristic for the selected version.
Select the pole arrangement
This model is listed as 4P. Confirm terminal identification and any neutral-pole treatment using the actual connection diagram.
Verify voltage-specific capacity
Provide the operating voltage and prospective short-circuit current. Request the applicable Icu and Ics rather than selecting on current or a suffix alone.
Plan the panel connection
Request mounting dimensions, terminal sizes, connection hardware and tightening instructions. Confirm accessory compatibility by the complete breaker model.
ABOUT W9 GROUP
W9 Group WLM8-400H-4300 Thermal Magnetic Circuit Breaker Support
Zhejiang W9 Group Technology Co., Ltd. supplies low-voltage electrical products. For a WLM8-400H-4300 enquiry, contact W9 Group about configuration and matching product documents.
RELATED RESOURCES
WLM8-400H-4300 Thermal Magnetic MCCB Wiring, Terminals and Trip-Curve Documents
Use technical support and related products to specify WLM8-400H-4300. Request a datasheet and wiring diagram matching the selected WLM8-400H-4300 configuration.
RELATED PRODUCTWLM8-630H-3300Compare function and configuration; request separate model ratings
DOCUMENTSW9 Group download centreRequest the current document for your quoted WLM8-400H-4300 variant
BUYER FAQ
WLM8-400H-4300 Thermal Magnetic MCCB FAQs: Overload and Short-Circuit Selection
Find answers about WLM8-400H-4300 selection, configuration and ordering.
What configuration is listed for WLM8-400H-4300?
This product is identified as 400 A and 4P with a thermal-magnetic release. Confirm the complete offered configuration before ordering.
What is the difference between the thermal and magnetic functions?
The thermal function addresses sustained overloads and the magnetic function addresses high fault currents. Request the exact time-current curve to determine pickup and operating time for the offered release.
Can the trip current be adjusted?
Confirm whether the supplied release has fixed or adjustable settings and request its adjustment schedule. A thermal-magnetic designation does not by itself establish a selectable current range.
Which short-circuit breaking capacity applies?
Confirm Icu and Ics at the actual circuit voltage for this complete model. The H suffix and current designation are not substitutes for the voltage-specific rating schedule.
Does it include residual-current or earth-leakage protection?
Confirm a dedicated leakage release or a coordinated separate device if residual-current protection is required. A thermal-magnetic release description does not establish leakage sensitivity or a residual-current trip function.
Which accessories and installation documents should I request?
Request the WLM8-400H-4300 mounting and terminal drawing, wiring instructions, time-current curves and accessory compatibility list. Confirm auxiliary contacts and powered operating accessories separately.
What is needed for a WLM8-400H-4300 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 WLM8-400H-4300 Thermal Magnetic MCCB Quotation
Tell W9 Group your model, required current, poles, circuit voltage, load starting duty and prospective fault current, quantity and destination market so the selected configuration can be identified.