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Eaton / Cutler-Hammer HFB3080 Molded Case Circuit Breaker
- 80A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
HFB3080
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
HFB3080
Quantity
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Eaton / Cutler-Hammer HFB3080 - 80A 3 Pole Molded Case Circuit Breaker
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Description
Engineered for commercial power distribution, the Eaton HFB3080 is a 3-pole, 80A MCCB from the Mark 75 family. It utilizes thermal-magnetic technology to provide reliable long-time and instantaneous protection. This F-Frame breaker features bolt-on mounting for Eaton Pow-R-Line C panelboards and Westinghouse FDP enclosures. It is officially replaced by the HFD3080 in modern setups. Rated for up to 600VAC, it delivers a high interrupting capacity of 65kA at 240V and is HACR rated.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HFB3080-R |
| Series | HFB |
| Amperage | 80A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse FDP Panelboards, Eaton Pow-R-Line C Panelboards, F-Frame Switchboards |
| Wire Gauge | 14-1/0 AWG (Cu/Al) |
| Max Wire | 1/0 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, Alarm Switch |
|---|---|
| Accessories | Load Side Lugs |
| Standards | NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | High Interrupting Capacity, HACR Rated, Reverse Feed |
Product FAQs
7 answersCan I install the Eaton HFB3080 in an older Westinghouse panelboard?
Yes. Eaton acquired the Westinghouse distribution equipment line, so this Eaton or Cutler-Hammer HFB3080 is physically and electrically interchangeable with original Westinghouse HFB breakers. It is designed to bolt directly into Westinghouse FDP panelboards, as well as Eaton Pow-R-Line C panelboards.
What does the Mark 75 designation mean on the HFB3080?
Mark 75 is a legacy Westinghouse family designation for molded case circuit breakers built with a high interrupting capacity. For the HFB3080, this indicates a maximum interrupting rating of 65kA at 240VAC, making it suitable for systems with higher available fault currents than standard FB breakers.
What is the difference between the FB3080 and the HFB3080?
The primary difference is the short-circuit interrupting capacity. The HFB3080 is a high-interrupting breaker rated up to 65kA at 240VAC, while the FB3080 is a standard-interrupting breaker. Both share the same physical F-Frame dimensions and bolt-on mounting style.
What is the modern Eaton replacement for the HFB3080?
In modern Eaton setups, the HFB3080 is officially replaced by the HFD3080 Series C F-Frame breaker. However, the HFB3080 remains available as a direct replacement for existing installations in older Westinghouse and Cutler-Hammer enclosures.
Does the HFB3080 require a separate mounting kit for installation?
It depends on the panelboard. While the HFB3080 is a bolt-on F-Frame breaker, installing it into certain Eaton Pow-R-Line panels may require a specific connector kit, such as the KPRL3AFD3 for 3-pole breakers, to attach it to the bus. Always verify the required mounting hardware for your specific panelboard type.
Can I use aluminum wire with the standard lugs on the HFB3080?
Yes. The standard lugs included with the HFB3080 are dual-rated for both copper and aluminum conductors, accepting wire sizes from 14 AWG up to 1/0 AWG. Ensure you apply the correct torque and use an appropriate oxide inhibitor when terminating aluminum wire.
Can the HFB3080 be reverse fed in a panelboard?
Yes. The HFB3080 is rated for reverse feed applications, meaning power can be supplied to either the line or load terminals without affecting the breaker's protective functions.
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