Federal Pacific HN633120 Molded Case Circuit Breaker
- 1200A
- 3 Pole
- Bolt-On
Quantity
Federal Pacific HN633120 - 1200A 3 Pole Molded Case Circuit Breaker
New
Quantity
Description
Rated for 1200 amps, this three-phase MCCB offers fixed thermal and adjustable magnetic protection. The Federal Pacific HN633120 represents the top end of the classic H-Frame lineup. This legacy breaker bolts into established Federal Pacific distribution panels, eliminating the need for complex retrofits. When full system upgrades are necessary, the NN633120 serves as the designated modern substitute.Specifications
| Brand | Federal Pacific |
|---|---|
| Part Number | HN633120 |
| Series | HN |
| Amperage | 1200A |
| 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 |
| 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
5 answersWhich electrical panels are compatible with the Federal Pacific HN633120?
This legacy H-Frame breaker is designed to bolt directly into established Federal Pacific distribution panels and switchgear. It allows facilities to maintain existing infrastructure without requiring complex retrofits.
Is there a modern substitute available for the HN633120?
Yes. When full system upgrades are necessary or the original H-Frame is no longer suitable, the NN633120 serves as the designated modern substitute for this 1200-amp breaker.
How does the trip unit on the HN633120 function?
The breaker utilizes a thermal-magnetic trip unit featuring fixed thermal and adjustable magnetic protection. This provides standard LI (Long-Time and Instantaneous) trip functions to protect heavy-duty circuits against sustained overloads and sudden short circuits.
How is the HN633120 secured and terminated during installation?
The breaker requires a bolt-on connection to mount securely to the panel bus. It is equipped with load side lugs for terminating the outgoing phase conductors.
What safety precautions apply when replacing legacy Federal Pacific breakers?
Legacy Federal Pacific Electric (FPE) equipment has a documented history of reliability issues. A licensed electrician must thoroughly inspect the existing panel bus assembly and switchgear for arcing, heat damage, or wear before installing any replacement breaker.
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