Eaton / Cutler-Hammer BRX High Fault Series Circuit Breakers
The Eaton / Cutler-Hammer BRX series offers high fault current interrupting capacity of 22-65kA, far exceeding the standard 10kA rating of regular BR breakers. Designed for service entrance panels and locations with high available fault current.
Series Specifications
| Frame | Residential High Fault Plug-On — 50A Frame |
|---|---|
| Amperage Range | 15A - 50A |
| Voltage | 120/240VAC |
| Poles | 1-Pole, 2-Pole |
| Interrupting Rating | 22kA - 65kA @ 120/240V |
| Mounting | Plug-In |
| Trip Type | Thermal Magnetic (High Interrupting) |
History and Replacement Context
As utility transformer sizes increased and service entrance fault currents rose, standard 10kA residential breakers became inadequate for service entrance panels. The BRX series was developed to provide high-interrupting capacity in the same plug-in BR format.
Typical Applications
- Service entrance panels
- High fault current environments
- Commercial and light industrial
- Utility-supplied service locations