Eaton / Westinghouse J2125 Molded Case Circuit Breaker
- 125A
- 2 Pole
- Bolt-On
Quantity
Eaton / Westinghouse J2125 - 125A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Serving commercial power distribution needs, this 125A J-Frame MCCB delivers reliable thermal-magnetic protection. Engineered to bolt into Westinghouse CDP and FDP panelboards, it ensures a perfect fit. Facility managers rely on this unit to restore power without modifying existing enclosures. Rated for 22kA at 480VAC, it provides robust fault clearing. This model is cross-referenced to be replaced by the JD2125 in modern upgrades.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | J2125-R |
| Series | J |
| Amperage | 125A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 22kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | J |
|---|---|
| Terminal Type | Lugs |
| For Use With | Westinghouse CDP/FDP Panelboards, Eaton Pow-R-Line 3a/4 Panelboards, Motor Control Centers |
| Wire Gauge | 4 AWG - 350 kcmil |
| Max Wire | 350 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40°C |
| Construction Features | HACR Rated |
Product FAQs
5 answersWhich panelboards are compatible with the J2125 circuit breaker?
This Series C J-frame breaker is designed for bolt-on installation in Westinghouse CDP and FDP panelboards, Eaton Pow-R-Line 3a and 4 panelboards, and compatible motor control centers.
Are Eaton and Westinghouse J2125 breakers interchangeable?
Yes. Eaton acquired the Westinghouse distribution equipment line. A J2125 breaker branded as Eaton, Cutler-Hammer, or Westinghouse will have the exact same physical dimensions and electrical characteristics for Series C J-frame applications.
What wire size range do the standard lugs on the J2125 accept?
The standard lugs accommodate wire sizes from 4 AWG up to 350 kcmil. Ensure proper torque specifications are followed during installation as outlined on the breaker faceplate.
Does the J2125 feature an adjustable trip setting?
It features a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element for instantaneous short-circuit protection. This allows for selective coordination with downstream devices.
Can the J2125 be utilized in direct current systems?
Yes, this breaker is rated for DC applications up to 250VDC, providing a 10kA interrupting capacity for direct current circuits.
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Reviews
Review summary
Customers rate this product 4.0 out of 5 based on 1 review.
- MCMARK C.Verified BuyerReviewingITE/Siemens J20M Control RelayI recommend this productRated 4 out of 5 stars2/4/26it control relay but it was just the coil for the relay. do you have a J20A40 CONTACTS?
it control relay but it was just the coil for the relay. do you have a J20A40 CONTACTS?