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Federal Pacific 2350 NES - 50A 3 Pole Molded Case Circuit Breaker
- 50A
- 3 Pole
- Plug-On
Federal Pacific
2350
NES - 50A 3 Pole Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
2350
Quantity
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Federal Pacific NES2350 - 50A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial and industrial applications, this 50-amp component provides reliable thermal-magnetic protection. It mounts into older Federal Pacific Stab-Lok panelboards, serving as an exact fit for aging infrastructure. Facility managers can utilize this unit or the UBIF250 substitute to maintain existing N-Frame setups without panel modifications. Rated for 18kA interrupting capacity at 240VAC, it includes load-side lugs accepting 14-6 AWG wire and carries a HACR rating.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | 2350-R |
| Series | NES |
| Amperage | 50A |
| Poles | 3 |
| Mounting Style | Plug-On |
| Voltage | 240VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 5kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Federal Pacific Stab-Lok Panelboards |
| Wire Gauge | 14-6 AWG |
| Max Wire | 6 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, Undervoltage Release, Bell Alarm, Auxiliary Switch |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB 1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | Common Trip, Non-Interchangeable Trip |
Product FAQs
8 answersWhich panelboards are compatible with the Federal Pacific NES2350 circuit breaker?
This N-Frame breaker is designed for use in legacy Federal Pacific NE-S frame and Stab-Lok panelboards. It utilizes a stab-type plug-on connection to fit directly into these existing commercial distribution panels without requiring retrofit adapters.
What is the accepted wire size range for the load side lugs on the NES2350?
The load side lug terminals on this 50-amp breaker accept wire sizes ranging from 14 AWG to 6 AWG. Ensure all connections are properly torqued to the manufacturer specifications during installation.
Is the Federal Pacific NES2350 suitable for direct current (DC) applications?
Yes, in addition to its 240VAC rating, this breaker is rated for up to 250VDC with a direct current interrupting capacity of 5kA.
Are there direct replacements available for the Federal Pacific NES2350?
Because original Federal Pacific Electric (FPE) breakers are no longer manufactured, exact replacements are typically sourced from legacy stock. Some aftermarket manufacturers also produce modern equivalents designed to fit the same NE-S frame panelboards.
What is a known aftermarket substitute for the Federal Pacific NES2350?
The UBIF250 is a recognized aftermarket substitute designed to fit the same Federal Pacific N-Frame panelboards, providing an alternative when original NES2350 units are unavailable.
Are there safety considerations when installing legacy Federal Pacific breakers?
Federal Pacific Electric (FPE) equipment is obsolete, and some legacy Stab-Lok designs have documented safety concerns regarding failure to trip under overcurrent conditions. Many electrical professionals recommend evaluating the entire panelboard for replacement when servicing these systems.
How does the NES2350 mount into the panelboard?
This breaker features a plug-on mounting style. It uses stab-type connections that push directly into the busbar of compatible Federal Pacific panelboards, eliminating the need for bolt-on hardware.
Is the NES2350 circuit breaker suitable for HVAC equipment?
Yes, this breaker is fully HACR rated, making it suitable for use with heating, air conditioning, and refrigeration motor loads that require a 50-amp, 3-pole configuration.
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