Free Shipping Over $99
Federal Pacific NFJ437150 Molded Case Circuit Breaker
- 150A
- 3 Pole
- Bolt-On
Federal Pacific
NFJ437150
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NFJ437150
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Federal Pacific NFJ437150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Sold out
Quantity
Federal Pacific NFJ437150 - 150A 3 Pole Molded Case Circuit Breaker
New
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NFJ437150-R |
| Series | NFJ |
| Amperage | 150A |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Quantity
Federal Pacific NFJ437150 - 150A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
| Brand | Federal Pacific |
|---|---|
| Part Number | NFJ437150-R |
| Series | NFJ |
| Amperage | 150A |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Similar Items
150A 3 Pole Molded Case Circuit Breaker
175A 3 Pole Molded Case Circuit Breaker
175A 3 Pole Molded Case Circuit Breaker
Description
Engineered for commercial and industrial applications, this 150A Federal Pacific MCCB provides robust thermal-magnetic protection. The three-pole design ensures reliable performance across demanding electrical environments. It mounts into legacy FPE panelboards, serving as an exact replacement for aging or failed components. The bolt-on connection guarantees a secure fit without requiring adapters. Rated for 18kAIC at 480VAC and 25kAIC at 240VAC, it features non-interchangeable trip units.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NFJ437150-R |
| Series | NFJ |
| Amperage | 150A |
| 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, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release, Alarm Switch |
|---|---|
| Accessories | Lugs |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip |
Product FAQs
6 answersWhat enclosures are compatible with the NFJ437150 circuit breaker?
This breaker is designed specifically for legacy Federal Pacific (FPE) panelboards and switchboards configured to accept N-Frame bolt-on circuit breakers.
How is the NFJ437150 installed into the panelboard?
It utilizes a standard bolt-on connection, allowing it to mount directly to the panel busbar for a secure, vibration-resistant fit without requiring additional mounting adapters.
What wire sizes can be used with the terminals on this breaker?
The lugs accept wire gauges from 4 AWG up to 300 kcmil. Ensure you use properly sized conductors based on the 150A rating and local electrical codes.
How does the trip unit function on the NFJ437150?
It features a thermal-magnetic (LI) trip unit. The thermal element provides fixed long-time protection against sustained overloads, while the magnetic element offers adjustable instantaneous protection against short circuits.
Is the Federal Pacific NFJ437150 still manufactured?
No, Federal Pacific Electric (FPE) is no longer in business. This N-Frame breaker is considered a legacy component, used primarily as an exact replacement to maintain existing FPE infrastructure.
Can the NFJ437150 be used in direct current (DC) systems?
Yes, in addition to its AC ratings, this breaker is rated for 250VDC applications with a 10kA interrupting capacity.
SuperClub
Join free. Get 500 SuperPoints.
Earn points on eligible purchases and redeem them at checkout.
100 SuperPoints = $1 off.
Warranties
Add an extra year of protection
60-Day Warranty
Your purchase includes 60 days of SuperBreakers warranty coverage.
Add a 1-year warranty extension in your cart.
Get a Quote
Don’t see what you’re looking for?
We source obsolete and hard-to-find parts every day.
Shipping
Free Shipping Policy
Parcel shipments with item value over $99 qualify for free economy shipping within the continental US. Please call to confirm special handling instructions. We do not charge a handling fee or require a minimum amount on any order. SuperBreakers does not ship on customer accounts.
Same Day Shipping
We strive to ship out your items the same day the order is placed. In rare circumstances SuperBreakers may reserve up to 5 business days to consolidate orders for complete shipment.
Expedited Shipments
Orders being shipped via Next Day Air, 2 Day Shipping or 3 Day Shipping must be received by 3 PM EST to guarantee same-day shipments. Expedited orders only ship on normal business days. Shipments will NOT be sent out on Saturdays and Sundays.
International Shipping
All International orders require a $1,000 minimum order threshold. Due to the special nature of these shipments, we require that these be placed with a SuperBreakers representative. Additional shipping and instructions will apply. All International Orders are Non-Cancel and Non-Refundable.
Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 3 reviews.
Search
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