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Eaton / Cutler-Hammer HFA3090 Molded Case Circuit Breaker
- 90A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
HFA3090
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
HFA3090
Quantity
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Eaton / Cutler-Hammer HFA3090 - 90A 3 Pole Molded Case Circuit Breaker
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Description
A staple in commercial power management, the Eaton HFA3090 delivers 90 amps of thermal-magnetic protection across three poles. This H-Frame breaker is engineered to maintain safety and stability in heavy-duty industrial applications. The unit bolts firmly into Eaton Series C panelboards, motor control centers, and switchboards. Facilities can upgrade to the HFD3090, its official factory replacement. It boasts an interrupting rating of 25 kAIC at 480V and comes standard with load-side lugs.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HFA3090-R |
| Series | HFA |
| Amperage | 90A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 10kA @ 250VDC |
| Frame Type | HFA |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton Series C Panelboards, Switchboards, Motor Control Centers |
| 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, Padlock Attachment |
|---|---|
| Accessories | Load Side Lugs Included |
| Standards | CSA C22.2 No. 5, NEMA AB-1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip, Reverse Feed |
Product FAQs
8 answersCan the Eaton HFA3090 replace an older Westinghouse HFA3090?
Yes. Eaton acquired the Westinghouse electrical distribution division. The Eaton, Cutler-Hammer, and Westinghouse HFA3090 breakers share the same physical dimensions, mounting style, and electrical ratings.
Which panelboards accept the HFA3090 circuit breaker?
This bolt-on breaker is designed for use in Eaton Series C panelboards, as well as compatible industrial switchboards and motor control centers.
What does the H in the HFA3090 part number indicate?
The H designates this as a high-interrupting capacity breaker compared to standard FA models. It provides elevated fault protection, including 65kAIC at 240VAC and 25kAIC at 480VAC.
Are the thermal and magnetic trip points adjustable on this breaker?
No. The HFA3090 is equipped with fixed thermal (long-time) and fixed magnetic (instantaneous) trip elements that cannot be adjusted in the field.
What are the wire size requirements for the HFA3090 lugs?
The standard lugs on this breaker accept either copper or aluminum conductors ranging from 14 AWG to 1/0 AWG.
Does this breaker support direct current (DC) applications?
Yes, the HFA3090 is rated for DC systems up to 250VDC, providing an interrupting capacity of 10kAIC at that voltage.
How is this breaker secured inside the enclosure?
The HFA3090 uses a bolt-on connection type. It must be mechanically bolted directly to the bus bars of the panelboard or switchboard.
Is it safe to install the HFA3090 while the panelboard is energized?
No. To prevent arc flash hazards and comply with NFPA 70E safety standards, the panelboard or switchboard must be completely de-energized before bolting in or removing this circuit breaker.
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