Federal Pacific HEF435020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Federal Pacific
HEF435020
Molded Case Circuit Breaker
Brand
Federal Pacific
SKU
HEF435020
Quantity
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Federal Pacific HEF435020 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Maintaining older commercial infrastructure requires exact-fit components like this 20A three-pole molded case circuit breaker. It features standard long-time and instantaneous trip functions to prevent overloads and short circuits. The bolt-on configuration installs seamlessly into legacy FPE panelboards. It acts as a precise crossover for the discontinued NEF435020 and the UBIF020, eliminating the need for panel modifications. High interrupting ratings of 42kA at 240V ensure safety.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | HEF435020-R |
| Series | HEF |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 22kA @ 480VAC |
| Frame Type | HEF |
|---|---|
| Terminal Type | Lugs |
| For Use With | FPE Panelboards |
| 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 Thermal, Fixed Magnetic |
| 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 answersWhich panelboards accept the Federal Pacific HEF435020?
This breaker is designed specifically for legacy Federal Pacific (FPE) commercial and industrial panelboards configured for H-Frame bolt-on circuit breakers.
What are the wire gauge requirements for the HEF435020 terminals?
The factory lugs accommodate copper or aluminum conductors ranging from 14 AWG to 2 AWG. Ensure proper torque specifications are followed during installation to maintain a secure electrical connection.
How does the interrupting rating (AIC) scale with voltage on the HEF435020?
The short-circuit interrupting capacity is voltage-dependent. It provides up to 42kA of protection at 240VAC, which decreases to 22kA when applied to 480VAC systems.
What protection functions are included in the HEF435020 trip unit?
It utilizes a fixed thermal-magnetic trip unit providing standard LI protection. This includes a fixed thermal element for long-time overload protection and a fixed magnetic element for instantaneous short-circuit response.
Is the HEF435020 compatible with residential FPE Stab-Lok load centers?
No. The HEF435020 is a commercial H-Frame molded case circuit breaker with a bolt-on mounting style. It cannot be installed in residential Stab-Lok enclosures.
Is the Federal Pacific HEF435020 still manufactured?
Federal Pacific Electric is no longer in business, making the HEF series a legacy product line. However, exact HEF435020 replacements are still sourced to support the maintenance of existing FPE switchgear and panelboards without requiring a full system retrofit.
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