JCB3-125 miniature circuit breaker
TECHNICAL DATA
JCB3-125 miniature circuit breaker specifications
W9 Group lists the JCB3-125 miniature circuit breaker with overload and short-circuit protection, contact indication and multiple pole options. Confirm the supply type, voltage and selected current as one complete configuration; the product summary alone is not a detailed rating schedule.
| Model | JCB3-125 |
|---|---|
| Protection functions | Overload and short circuit |
| Listed current limit | Up to 125A; confirm the ordered current |
| Pole options | 1 pole, 2 pole, 3 pole, 4 pole |
| Listed breaking capacity | 10kA; confirm voltage and test configuration |
| Connection | Request the supply-specific pole diagram |
SELECTION GUIDE
JCB3-125 high current MCB selection
Specify the complete order code, circuit duty, installation conditions and required documents when requesting a JCB3-125 quotation from W9 Group.
Define the supply circuit
Provide the supply type, maximum circuit voltage and earthing arrangement. Confirm the required pole connection from the matching wiring diagram.
Coordinate current and release
Choose the ordered current using conductor and load duty. Request the exact trip curve and any installation-related derating.
Compare fault interruption
Provide the prospective short-circuit current. Confirm the breaking rating, operating voltage and applicable test standard together.
Check installation details
Request terminal limits, mounting dimensions, torque and accessory compatibility for the complete model code.
ABOUT W9 GROUP
W9 Group support for JCB3-125 MCB
Zhejiang W9 Group Technology Co., Ltd. supplies low-voltage electrical products. For a JCB3-125 enquiry, contact W9 Group about configuration and matching product documents.

RELATED RESOURCES
JCB3-125 pole configuration documents
Use technical support and related products to specify JCB3-125. Request a datasheet and wiring diagram matching the selected JCB3-125 configuration.
RELATED PRODUCTJC3BECompare function and configuration; request separate model ratings
DOCUMENTSW9 Group download centreRequest the current document for your quoted JCB3-125 variant
BUYER FAQ
JCB3-125 MCB fault rating FAQs
Find answers about JCB3-125 selection, configuration and ordering.
Is JCB3-125 specified for AC or DC supply?
Confirm the exact supply-specific order code and rating schedule. The summary includes a DC voltage statement for a four-pole configuration, but does not establish the same voltage or supply rating for all variants.
Is every JCB3-125 supplied at the maximum current?
No. The supplier lists a range up to 125A. Confirm the individual current option and its trip curve for the intended conductor and load.
Can I use the same voltage on every pole option?
Confirm a separate voltage and wiring schedule for each pole configuration. Do not apply the four-pole voltage statement to fewer poles.
Does 10kA establish the required fault duty?
Confirm the voltage, test standard and selected configuration associated with the listed 10kA rating, then compare it with the prospective circuit fault current.
Does this MCB include residual-current protection?
Residual-current protection is not established by the listed overload and short-circuit functions. Confirm a separate RCD or an appropriate RCBO if that protection is required.
Which trip curve and mounting dimensions should be used?
These details are not established by the available summary. Request the matching curve, dimensions and terminal instructions from W9 Group.
What is needed for a JCB3-125 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 JCB3-125 miniature circuit breaker quotation
Tell W9 Group your complete order code, circuit duty, installation conditions and required documents, quantity and destination market so the selected configuration can be identified.

















































