Eaton / Westinghouse GB2020 Molded Case Circuit Breaker
- 20A
- 2 Pole
- Bolt-On
Quantity
Eaton / Westinghouse GB2020 - 20A 2 Pole Molded Case Circuit Breaker
New
Quantity
Description
Part of Eaton's Series C line, this 20A molded case circuit breaker delivers robust thermal-magnetic protection for commercial power networks. Designed for seamless integration, it bolts into Cutler-Hammer, Westinghouse, and Pow-R-Line panelboards. It acts as an exact legacy replacement, restoring functionality without requiring newer GHB2020 adapters. Featuring a 65kAIC rating at 240VAC, this breaker includes common trip functionality, Visi-Trip indication, and HACR certification.Specifications
| Brand | Eaton / Westinghouse |
|---|---|
| Series | GB |
| Amperage | 20A |
| Poles | 2 |
| Mounting Style | Bolt-On |
| Voltage | 240VAC |
| Phase | 1 |
| AIC Rating | 65kA @ 240VAC |
| Frame Type | GB |
|---|---|
| Terminal Type | Lugs |
| For Use With | Eaton / Westinghouse Series C Panelboards, Pow-R-Line Panelboards |
| 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 |
|---|---|
| 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, Common Trip, Reverse Feed, Non-Interchangeable Trip |
Product FAQs
7 answersWhat panelboards are compatible with the GB2020 circuit breaker?
The GB2020 is designed for use in Eaton, Cutler-Hammer, and Westinghouse Series C panelboards, as well as Pow-R-Line distribution panels. It features a bolt-on connection for secure mounting in these commercial and industrial systems.
What wire sizes and materials are accepted by the GB2020 terminals?
The factory-installed lugs on this G-Frame breaker accept wire gauges from 14 AWG up to 1/0 AWG. The terminals are rated for both copper and aluminum conductors.
Can the Eaton GB2020 replace older Westinghouse or Cutler-Hammer GB breakers?
Yes. Eaton acquired the distribution equipment divisions of both Westinghouse and Cutler-Hammer. The current Eaton GB2020 is a direct, exact replacement for legacy Westinghouse and Cutler-Hammer breakers sharing the same GB2020 catalog number.
What does the 65kAIC rating mean for this specific breaker?
The 65kAIC rating indicates that this breaker can safely interrupt up to 65,000 amps of fault current at 240VAC. This high interrupting capacity makes it suitable for commercial and industrial power networks where high available fault currents are present.
How does the thermal-magnetic trip unit function on the GB2020?
This breaker features a fixed thermal-magnetic trip unit with long-time and instantaneous (LI) protection. The thermal element provides a delayed trip for sustained overloads, while the magnetic element trips immediately in the event of a short circuit.
Can this 2-pole breaker be used in a 3-phase panelboard?
Yes, a 2-pole breaker like the GB2020 can be installed in a 3-phase Pow-R-Line or Series C panelboard to feed a 240V single-phase load. It achieves this by connecting across two of the three available phases.
Does the GB2020 provide ground fault or arc fault protection?
No. The GB2020 is a standard thermal-magnetic circuit breaker designed for overload and short-circuit protection only. It does not include GFCI or AFCI circuitry.
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