Federal Pacific HEF631020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific HEF631020 - 20A 3 Pole Molded Case Circuit Breaker
Re-Certified
Quantity
Description
Part of the legacy HEF series, the HEF631020 is a 3-pole, 20A molded case circuit breaker from Federal Pacific. This bolt-on MCCB installs into existing FPE panelboards and switchboards. It serves as an exact drop-in replacement for the discontinued NEF631020, ensuring seamless integration without adapters. Rated for 22kAIC at 480VAC and 14kAIC at 600VAC, it features fixed long-time and instantaneous trip functions and includes load side lugs.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | HEF631020-R |
| Series | HEF |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 22kA @ 480VAC, 14kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | HEF |
|---|---|
| Terminal Type | Lugs |
| For Use With | FPE Panelboards and Switchboards |
| Wire Gauge | 14-2 AWG (Cu/Al) |
| Max Wire | 2 AWG |
| Min Wire | 14 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity |
Product FAQs
6 answersWhat panels are compatible with the HEF631020 circuit breaker?
This bolt-on molded case circuit breaker is designed specifically for installation in legacy Federal Pacific Electric (FPE) panelboards and switchboards that accept H-frame breakers.
Can the HEF631020 be used to replace discontinued NEF series breakers?
Yes. The HEF631020 serves as an exact drop-in replacement for the obsolete NEF631020. It shares the same physical footprint and bolts directly into the panel without requiring aftermarket adapters.
What wire sizes and materials are supported by the terminals?
The breaker comes equipped with standard lugs that accept both copper (Cu) and aluminum (Al) conductors ranging from 14 AWG to 2 AWG.
Can this Federal Pacific breaker be used in DC power systems?
Yes. While primarily used in AC systems up to 600VAC, the HEF631020 is also rated for 250VDC applications, providing a 10kA interrupting capacity for direct current circuits.
Are the trip settings adjustable on the HEF631020?
No. This thermal magnetic breaker features fixed long-time and instantaneous (LI) trip functions. The trip curve cannot be adjusted in the field.
How is the HEF631020 secured inside the panelboard?
It utilizes a bolt-on connection type. The breaker terminals bolt directly to the panelboard busbars, ensuring a secure and reliable mechanical connection for industrial distribution systems.
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