Free Shipping Over $99
Federal Pacific NFJ434100 Molded Case Circuit Breaker
- 100A
- 3 Pole
- Bolt-On
Federal Pacific
NFJ434100
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NFJ434100
Quantity
Shop with Confidence
Add an extra year of protection in your cart.
Federal Pacific NFJ434100 - 100A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Similar Items
125A 3 Pole Molded Case Circuit Breaker
125A 3 Pole Molded Case Circuit Breaker
150A 3 Pole Molded Case Circuit Breaker
Description
Built to restore legacy commercial systems, the NFJ434100 is a 100A, 3-phase molded case circuit breaker from Federal Pacific. It delivers essential overcurrent protection for heavy-duty environments. The bolt-on design mounts into compatible Federal Pacific enclosures, ensuring a secure connection. It serves as a direct replacement for discontinued N-Frame hardware. Featuring an 18 kAIC rating at 480VAC, it employs fixed thermal-magnetic trip units for consistent performance.Specifications
| Brand | Federal Pacific |
|---|---|
| Series | NFJ |
| Amperage | 100A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC |
| Frame Type | NFJ |
|---|---|
| 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, 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 panelboards are compatible with the NFJ434100?
This bolt-on N-Frame circuit breaker is designed exclusively for legacy Federal Pacific commercial panelboards and switchgear that accept NFJ-frame breakers.
What is the high-interrupting equivalent for the NFJ434100?
The Federal Pacific HFJ434100 is the high-interrupting capacity equivalent. It shares the same physical dimensions and bolt-on mounting but offers higher interrupting ratings, serving as a direct drop-in replacement for the NFJ434100.
What size wire do the lugs on the NFJ434100 accept?
The load-side lug terminals on this breaker accommodate wire gauges from 4 AWG up to 300 kcmil. Installers must ensure proper torque specifications are followed to maintain a secure connection.
Can the trip settings on the NFJ434100 be adjusted?
No. This breaker features a non-interchangeable thermal magnetic trip unit with fixed long-time and fixed instantaneous (LI) trip functions. It does not offer adjustable trip settings.
How does the NFJ434100 mount into the panelboard?
It utilizes a bolt-on connection type, which provides a secure, vibration-resistant mechanical and electrical connection directly to the panelboard bus bars.
Are Federal Pacific NFJ commercial breakers the same as Stab-Lok residential breakers?
No. The NFJ series consists of commercial-grade, bolt-on molded case circuit breakers. They are entirely different in design, mounting, and application from the Federal Pacific Stab-Lok residential plug-on breakers.
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