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Federal Pacific NFJ437200 Molded Case Circuit Breaker
- 200A
- 3 Pole
- Bolt-On
Federal Pacific
NFJ437200
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NFJ437200
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Federal Pacific NFJ437200 - 200A 3 Pole Molded Case Circuit Breaker
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Description
Part of the legacy N-Frame series, this 200-amp molded case breaker provides essential overcurrent safety for commercial facilities. The bolt-on design installs into existing Federal Pacific panelboards, serving as a seamless replacement for discontinued hardware. Equipped with non-interchangeable thermal-magnetic trip functions, it delivers a solid 18kA interrupting capacity at 480VAC. Facility managers can maintain their current electrical infrastructure safely.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NFJ437200 |
| Series | NFJ |
| Amperage | 200A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Panelboards |
| Wire Gauge | 4 AWG - 300 kcmil |
| Max Wire | 300 kcmil |
| Min Wire | 4 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Fixed Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch |
|---|---|
| Accessories | Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersWhat type of panelboards will accept the NFJ437200 circuit breaker?
This bolt-on breaker is designed specifically for installation in legacy Federal Pacific Electric (FPE) NFJ series panelboards and switchgear. It is not compatible with modern load centers from other manufacturers.
What wire sizes are supported by the lugs on this 200A FPE breaker?
The factory-installed lugs accept conductors ranging from 4 AWG up to 300 kcmil. Ensure you torque the terminal connections to the manufacturer specifications to prevent overheating during operation.
Can the NFJ437200 be used in direct current (DC) applications?
Yes, in addition to its AC ratings, this thermal-magnetic breaker is rated for up to 250VDC systems, providing a 10kA interrupting capacity for DC power distribution.
Is the Federal Pacific NFJ437200 still in active production?
No, Federal Pacific Electric (FPE) is no longer in business, making the NFJ437200 an obsolete component. Replacements are typically sourced as original units or exact drop-in replacements manufactured by aftermarket brands like American Circuit Breaker.
Does this breaker feature adjustable trip settings?
No, the NFJ437200 features a non-interchangeable thermal-magnetic trip unit with fixed long-time and fixed instantaneous (LI) trip functions. It does not offer field-adjustable dials for customizing the trip curve.
How is the NFJ437200 secured to the busbar?
This is a bolt-on molded case circuit breaker. It requires mechanical fasteners to secure the line-side connections directly to the panelboard bus, which provides a highly secure connection for heavy-duty commercial applications.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.
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Rating
3 reviews
- ESEvan S.Verified BuyerReviewingFederal Pacific NFJ631225 - 225A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars9/11/26Review
Works great!
- RCRalph C.Verified BuyerReviewingFederal Pacific NFJ631150 - 150A 3 Pole Molded Case Circuit BreakerI recommend this productRated 4 out of 5 stars11/10/25Federal Pacific NF J631150 Breaker
Surprised they had it!
Great shape, well packaged. Fast shipping
- KPKeith P.ReviewingFederal Pacific NFJ631200 - 200A 3 Pole Molded Case Circuit BreakerI recommend this productRated 5 out of 5 stars12/15/20Quick and easy ordering
Quick and easy ordering