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Eaton / Cutler-Hammer HFA3020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
HFA3020
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
HFA3020
Quantity
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Eaton / Cutler-Hammer HFA3020 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Designed to protect commercial electrical distribution systems, the Eaton HFA3020 delivers 20 amps of thermal-magnetic protection across three poles. Rated for 600VAC and 250VDC, this breaker achieves a 65kAIC rating at 240V and 25kAIC at 480V. The non-interchangeable trip unit ensures precise long-time and instantaneous fault response. This bolt-on H-Frame breaker mounts into Eaton Series C panelboards, motor control centers, and switchboards.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | HFA3020-R |
| Series | HFA |
| Amperage | 20A |
| 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 |
| 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
7 answersWhat equipment is the Eaton HFA3020 designed to fit?
This H-Frame breaker is engineered for integration into Eaton and Cutler-Hammer Series C distribution equipment. It bolts directly into compatible Series C panelboards, switchboards, and motor control centers.
What is the modern replacement for the legacy HFA3020 circuit breaker?
The Eaton HFD3020 serves as the direct factory upgrade for the HFA3020. It shares the same physical dimensions and bolt-on mounting style for seamless installation into existing Series C enclosures.
Are the trip settings on the HFA3020 adjustable?
No, this breaker utilizes a fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit pickup levels are factory-set and cannot be modified in the field.
What conductor sizes are supported by the terminals on this breaker?
The standard load-side lugs accept wire gauges from 14 AWG up to 1/0 AWG. Always verify whether your specific application requires copper or aluminum conductors and torque the connections to the manufacturer specifications.
Can the HFA3020 be utilized in DC power systems?
Yes, while primarily used in AC distribution, this thermal-magnetic breaker is also rated for direct current applications up to 250VDC, making it suitable for industrial control panels or battery backup circuits.
Is the HFA3020 circuit breaker suitable for reverse feed applications?
Yes, this breaker is rated for reverse feed wiring. This capability allows it to be back-fed when utilized as a main breaker in a panelboard or within specific generator transfer configurations.
Can field accessories be added to the HFA3020?
Yes, this breaker supports various internal accessories, including shunt trips, auxiliary switches, undervoltage releases, and alarm switches, as well as external padlock attachments for safety compliance.
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