Federal Pacific NFJ623100 Molded Case Circuit Breaker
- 100A
- 2 Pole
- Bolt-On
Quantity
Federal Pacific NFJ623100 - 100A 2 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
A drop-in replacement for aging infrastructure, this 100A, two-pole molded case circuit breaker restores power distribution in Federal Pacific panelboards. It handles demanding commercial and industrial loads up to 600VAC and 250VDC. The bolt-on design ensures a secure connection within legacy N-frame enclosures, eliminating the need for retrofits. Delivering 18 kAIC interrupting capacity at 480VAC, it utilizes proven thermal magnetic trip technology to clear overloads and short circuits.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NFJ623100-R |
| Series | NFJ |
| Amperage | 100A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 1 |
| AIC Rating | 25kA @ 240VAC, 18kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| 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, 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 or panelboards accept the NFJ623100 circuit breaker?
This N-Frame breaker is engineered as a direct, bolt-on replacement for legacy Federal Pacific (FPE) panelboards, eliminating the need for custom retrofits.
Does this breaker require specific mounting hardware for installation?
Yes, installing this N-Frame breaker into a Federal Pacific panelboard requires the appropriate legacy mounting hardware strap kit to secure the bolt-on connections to the busbar.
How does the adjustable trip unit function on this breaker?
The NFJ623100 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.
Can I replace this Federal Pacific breaker with a modern equivalent from another brand?
No direct modern cross-reference exists that matches the exact physical dimensions and bolt-on configuration of the legacy FPE N-Frame. Maintaining existing Federal Pacific infrastructure requires an exact NFJ frame replacement.
What are the acceptable wire gauges for the terminal lugs?
The included load-side lugs are designed to safely accommodate conductor sizes ranging from 4 AWG up to 300 kcmil. Ensure proper torque specifications are followed during installation.
Does this breaker feature interchangeable trip units?
No, the NFJ623100 is constructed with a non-interchangeable trip unit. The thermal-magnetic protection components are factory sealed within the molded case.
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Reviews
Review summary
Customers rate this product 4.7 out of 5 based on 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