Federal Pacific HN633100 Molded Case Circuit Breaker
- 1000A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific HN633100 - 1000A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Providing robust long-time and instantaneous trip functions, this 1000A breaker secures heavy circuits. The Federal Pacific HN633100 is a rugged H-Frame MCCB built for commercial facilities. Designed as a drop-in solution, it mounts into older Federal Pacific switchgear and distribution panels. It offers exact compatibility, though it is replaced by the NN633100 series for modernizations. With a 22 kAIC rating at 480VAC, this three-phase breaker utilizes proven thermal-magnetic technology.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | HN633100 |
| Series | HN |
| Amperage | 1000A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC |
| Phase | 3 |
| AIC Rating | 42kA @ 240VAC, 22kA @ 480VAC, 14kA @ 600VAC |
| Frame Type | HN |
|---|---|
| Terminal Type | Lugs |
| For Use With | Federal Pacific Switchgear, Federal Pacific Distribution Panels |
| Wire Gauge | 3 AWG - 500 kcmil (Aluminum/Copper) |
| Max Wire | 500 kcmil |
| Min Wire | 3 AWG |
| Trip Technology | Thermal Magnetic |
|---|---|
| Trip Function Code | LI |
| Trip Function | Long-Time, Instantaneous |
| Trip Adjustability | Fixed Thermal, Adjustable Magnetic |
| Available Options | Shunt Trip, Auxiliary Switch, Undervoltage Release |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | UL 489, NEMA AB-1 |
| Approval | UL |
| Temp Rating | 40°C |
| Construction Features | Molded Case Circuit Breaker |
Product FAQs
6 answersWhat equipment is compatible with the HN633100 circuit breaker?
This breaker is designed for legacy Federal Pacific switchgear and distribution panels configured for H-frame or HN-frame bolt-on breakers.
What are the lug requirements for the HN633100?
The factory lugs accept 3 AWG to 500 kcmil aluminum or copper conductors. Because this is a 1000A frame, installers must use multiple parallel conductors per phase to meet NEC ampacity requirements and verify that the panel has sufficient wire bending space.
How does the adjustable magnetic trip function benefit my installation?
The adjustable magnetic setting allows electricians to fine-tune the instantaneous trip threshold. This helps coordinate fault responses with downstream devices and prevents nuisance tripping from large motor inrush currents.
What is the maximum fault current the HN633100 can handle at 480V?
It provides a 22kAIC interrupting rating at 480VAC. Electricians must verify that the available fault current at the installation point does not exceed this 22kA limit to ensure safe clearing of short circuits.
Are direct replacements available for the obsolete Federal Pacific HN633100?
Because Federal Pacific Electric is no longer in business, original OEM production has ended. However, exact drop-in replacements and aftermarket equivalents are available to keep legacy switchgear operational without requiring a complete panel retrofit.
Does the HN633100 share the safety issues associated with FPE Stab-Lok breakers?
No. The well-documented safety concerns regarding Federal Pacific equipment are specific to their residential Stab-Lok load centers and plug-on breakers. The HN633100 is a heavy-duty commercial molded case circuit breaker with a completely different internal design and a secure bolt-on connection.
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