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Eaton / Cutler-Hammer REH3020 Molded Case Circuit Breaker
- 20A
- 3 Pole
- Bolt-On
Eaton / Cutler-Hammer
REH3020
Molded Case Circuit Breaker
Brand
Eaton / Cutler-Hammer
SKU
REH3020
Quantity
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Eaton / Cutler-Hammer REH3020 - 20A 3 Pole Molded Case Circuit Breaker
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Description
Serving commercial facilities, the Eaton REH3020 delivers reliable thermal-magnetic protection for demanding electrical systems. This three-pole molded case circuit breaker handles standard facility loads. Designed as a bolt-on solution, it mounts into Westinghouse and Cutler-Hammer EH-Frame or F-Frame panelboards. It serves as an exact replacement for the discontinued EH3020. Rated for 14kAIC at 480VAC, it provides robust fault interruption and features an HACR rating for HVAC equipment.Specifications
| Brand | Eaton / Cutler-Hammer |
|---|---|
| Part Number | REH3020 |
| Series | REH |
| Amperage | 20A |
| Poles | 3 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC, 480VAC, 250VDC |
| Phase | 3 |
| AIC Rating | 18kA @ 240VAC, 14kA @ 480VAC, 10kA @ 250VDC |
| Terminal Type | Lugs |
|---|---|
| For Use With | Westinghouse/Cutler-Hammer EH-Frame Panelboards, F-Frame Panelboards |
| 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 |
|---|---|
| Accessories | Load Side Lugs |
| Standards | CSA C22.2 No. 5.1, NEMA AB 1, UL 489 |
| Approval | CSA, UL |
| Temp Rating | 40C |
| Construction Features | HACR Rated, Legacy Replacement |
Product FAQs
7 answersWhich panelboards are compatible with the REH3020 circuit breaker?
This bolt-on breaker is designed specifically for installation in legacy Westinghouse and Cutler-Hammer EH-Frame and F-Frame panelboards.
Can the REH3020 be used to replace older EH series breakers?
Yes, the REH3020 serves as an exact drop-in replacement for the discontinued Cutler-Hammer EH3020 circuit breaker.
What wire sizes are supported by the terminals on this breaker?
The factory-installed load side lugs accept wire gauges ranging from 14 AWG up to 1/0 AWG. Always verify local code requirements for conductor sizing based on the 20A rating.
Can this molded case circuit breaker be applied in DC electrical systems?
Yes, the REH3020 carries a DC rating of 250VDC with a 10kA interrupting capacity, in addition to its standard AC ratings.
Are the thermal and magnetic trip settings adjustable on the REH3020?
No, this breaker features a fixed thermal-magnetic trip unit. Both the long-time overload and instantaneous short-circuit (LI) trip functions are factory set and non-adjustable.
What are the primary safety considerations when installing this bolt-on breaker?
Because it is a bolt-on device, the entire panelboard must be de-energized before installation. Verify zero voltage across all phases before bolting the breaker to the busbars to prevent arc flash hazards.
Is the REH3020 suitable for protecting HVAC equipment?
Yes, this breaker is HACR rated, meaning it is approved for use with heating, air conditioning, and refrigeration equipment that requires HACR-type circuit protection.
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