Federal Pacific HEJ233125 Molded Case Circuit Breaker
- 125A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific HEJ233125 - 125A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Built to restore commercial power systems, the Federal Pacific HEJ233125 is a 125A, 3-pole molded case circuit breaker. It provides essential long-time and instantaneous (LI) protection for industrial facilities relying on older infrastructure. Designed for an exact fit, this breaker bolts into standard Federal Pacific panelboards. It replaces obsolete NEJ233125 models and crosses to UBIHEJ233125, eliminating the need for complex retrofits. Rated for 22kAIC at 240VAC with load lugs included.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | HEJ233125-R |
| Series | HEJ |
| Amperage | 125A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC |
| Frame Type | HEJ |
|---|---|
| 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 |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity |
Product FAQs
5 answersWhich enclosures accept the Federal Pacific HEJ233125 circuit breaker?
This breaker is designed exclusively for legacy Federal Pacific (FPE) commercial panelboards and switchgear configured for H-Frame bolt-on breakers. It will not fit in standard load centers or enclosures from other manufacturers.
Can the HEJ series replace older Federal Pacific NEJ breakers?
Yes, HEJ series breakers like the HEJ233125 serve as exact drop-in replacements for obsolete NEJ series breakers with matching pole and amperage configurations. They share the same physical footprint and bolt-on connection.
What are the lug wire size limits for the HEJ233125?
The factory lugs accommodate a wide range of conductors, accepting wire sizes from 4 AWG up to 300 kcmil. Electricians must verify that the chosen conductor size meets local code requirements for a 125A circuit.
How does the LI trip function operate on this FPE breaker?
The LI designation indicates a thermal magnetic trip unit with Long-Time and Instantaneous protection. The thermal element provides delayed tripping for sustained overloads, while the magnetic element trips immediately during severe short circuits. Both settings are fixed.
Can this breaker be used to maintain existing FPE commercial panels?
Yes, installing a replacement HEJ233125 allows facility managers and electricians to safely maintain aging Federal Pacific commercial distribution systems without the immediate need for a complete panelboard retrofit.
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