Eaton / Westinghouse JB2150W Molded Case Circuit Breaker
- 150A
- 2 Pole
- Bolt-On
Quantity
Eaton / Westinghouse JB2150W - 150A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of Eaton's Series C J-Frame family, the JB2150W is a 2-pole, 150A molded case circuit breaker built for commercial and industrial distribution. It delivers reliable thermal-magnetic protection for heavy-duty applications. Engineered for exact fitment, this legacy breaker installs into older Westinghouse and modern Eaton Pow-R-Line panelboards. It serves as a direct replacement for JDB2150 and JD2150 models.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Part Number | JB2150W |
| Series | JB |
| Amperage | 150A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 22kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse Panelboards, Eaton Pow-R-Line Panelboards, Switchboards, Motor Control Centers |
| 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, Lug Kits |
|---|---|
| Accessories | None included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489, Federal Specification W-C-375b |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Reverse Feed |
Product FAQs
8 answersWhat enclosures and panelboards accept the JB2150W?
This Series C J-Frame breaker installs into legacy Westinghouse CDP and FDP panelboards, modern Eaton Pow-R-Line enclosures, switchboards, and motor control centers.
What older circuit breakers can the JB2150W replace?
It serves as a direct, drop-in replacement for legacy Westinghouse JDB2150 and JD2150 molded case circuit breakers.
Is there a difference between the Eaton and Westinghouse versions of the JB2150W?
No. Eaton acquired the Westinghouse distribution equipment line, so breakers labeled under Eaton, Cutler-Hammer, or Westinghouse with the JB2150W catalog number share the exact same mechanical and electrical specifications.
How is the trip unit configured on the JB2150W?
It utilizes a thermal-magnetic trip unit with a fixed thermal element for long-time overload protection and an adjustable magnetic element, allowing electricians to fine-tune the instantaneous short-circuit response.
Is the JB2150W rated for direct current applications?
Yes, in addition to its AC ratings, this breaker is rated for 250VDC systems with a 10kAIC interrupting capacity, making it suitable for specific industrial DC loads.
How does the JB2150W mount into the panel?
It is a bolt-on breaker that fastens directly to the panelboard bus. Standard J-Frame mounting hardware is required depending on the specific Pow-R-Line or legacy Westinghouse chassis.
Does the JB2150W carry a HACR rating?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment.
Can the JB2150W be reverse fed?
Yes, this breaker is suitable for reverse feed applications, allowing flexibility in how the line and load connections are wired within the enclosure.
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Reviews
Review summary
Customers rate this product 5.0 out of 5 based on 1 review.
- RMRonald M.ReviewingEaton / Westinghouse JB3200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars10/30/17Better than expected
The part arrived packaged like new. I installed and was up and running in minutes. I will be purchasing what ever I can in the future. A great deal and a great Company to deal with Thanks, R. Martin