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Eaton / Cutler-Hammer HFB3030 Molded Case Circuit Breaker
- 30A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
HFB3030
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
HFB3030
Quantity
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Eaton / Cutler-Hammer HFB3030 - 30A 3 Pole Molded Case Circuit Breaker
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Description
Designed for heavy-duty power distribution, this 30-amp F-Frame MCCB offers dependable long-time and instantaneous trip functions. It is engineered to fit seamlessly into Westinghouse and Eaton Pow-R-Line C panelboards. Often used to maintain existing commercial facilities, this 3-pole breaker is the predecessor to the modern HFD3030. With a 65kAIC rating at 240VAC and a 250VDC capability, it provides versatile, high-capacity fault protection for a wide range of industrial applications.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HFB3030-R |
| Series | HFB |
| Amperage | 30A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 600VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 65kA @ 240VAC, 25kA @ 480VAC, 18kA @ 600VAC, 20kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Eaton Pow-R-Line C Panelboards, Westinghouse Panelboards, 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 | HACR Rated, High Interrupting Capacity, Non-Interchangeable Trip |
Product FAQs
7 answersWhat panelboards are compatible with the HFB3030 circuit breaker?
The HFB3030 is designed for use in Eaton Pow-R-Line C panelboards, legacy Westinghouse panelboards, and compatible switchboards that accept F-frame bolt-on breakers.
Can an Eaton HFB3030 replace an older Westinghouse or Cutler-Hammer HFB3030?
Yes. Eaton acquired the Westinghouse distribution equipment line and Cutler-Hammer. A modern Eaton HFB3030 is a direct, UL listed replacement for legacy Westinghouse and Cutler-Hammer breakers sharing the exact same catalog number.
What does the Mark 75 designation indicate on the HFB3030?
The Mark 75 family designates Eaton and Westinghouse high-interrupting capacity breakers. For the HFB3030, this provides a 65kAIC rating at 240VAC, which exceeds the interrupting capacity of standard FB frame breakers.
How does the HFB3030 connect to the panelboard bus?
The HFB3030 is a bolt-on breaker. The line-side connections must be physically bolted directly to the panelboard busbars using threaded fasteners, which provides a secure, high-conductivity connection for commercial and industrial applications.
Are the trip settings on the HFB3030 adjustable?
No. The HFB3030 features a thermal-magnetic trip unit with fixed long-time and fixed instantaneous trip functions. Neither the thermal overload nor the magnetic short-circuit elements can be adjusted in the field.
Is the HFB3030 physically interchangeable with standard FB breakers?
Yes. The HFB is the high-interrupting version of the standard FB breaker. Both are F-frame molded case circuit breakers, meaning they share the exact same physical dimensions and bolt-on mounting configurations.
What does the LI trip function code mean for the HFB3030?
The LI designation indicates that the breaker provides Long-Time and Instantaneous protection. The Long-Time function protects against thermal overloads, while the Instantaneous function protects against magnetic short-circuits. This is the standard protection scheme for general power distribution.
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