Federal Pacific NEG631050 Molded Case Circuit Breaker
- 50A
- 3 Pole
- Bolt-On
Federal Pacific
NEG631050
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
NEG631050
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Federal Pacific NEG631050 - 50A 3 Pole Molded Case Circuit Breaker
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Description
A drop-in replacement for legacy Federal Pacific panelboards, the NEG631050 is a 3-pole, 50A molded case circuit breaker. It supports commercial applications where maintaining existing infrastructure is critical. This N-frame breaker installs into compatible enclosures without adapters. It serves as a direct substitute for the NEF431050, ensuring an exact fit. Rated 18kAIC at 240VAC, it features fixed thermal-magnetic trip technology.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | NEG631050 |
| Series | NEG |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 14kA @ 600VAC |
| Frame Type | NEG |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific Panelboards, Federal Pacific Switchboards |
| Wire Gauge | 14-1/0 AWG |
| Max Wire | 1/0 AWG |
| Min Wire | 14 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, Bell Alarm |
|---|---|
| Accessories | Line and Load Lugs Included |
| Standards | CSA C22.2, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | Non-Interchangeable Trip, Reverse Feed |
Product FAQs
6 answersWhich panelboards accept the NEG631050 circuit breaker?
This N-frame breaker is designed specifically for legacy Federal Pacific panelboards and switchboards. It features a bolt-on connection that installs directly into compatible enclosures without requiring aftermarket adapters.
Is the NEG631050 a suitable replacement for older NEF series breakers?
Yes, the NEG631050 serves as a direct drop-in substitute for the legacy NEF431050 circuit breaker, providing an exact hardware fit for existing Federal Pacific gear.
What wire sizes are supported by the lugs on the NEG631050?
The included line and load lugs accept wire gauges ranging from 14 AWG to 1/0 AWG, providing ample capacity for standard 50A conductors.
How does the interrupting capacity of the NEG631050 scale across different voltages?
The breaker provides a maximum interrupting rating of 18kA at 240VAC, which steps down to 14kA when applied to 480VAC or 600VAC systems.
Can the trip settings on the NEG631050 be adjusted in the field?
No, this breaker utilizes a fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit (LI) protection settings are factory-calibrated and non-interchangeable.
Is the NEG631050 suitable for reverse feed applications?
Yes, this breaker is rated for reverse feed installations, allowing it to be back-fed in compatible Federal Pacific panelboards when required by the system design.
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