Eaton BR120 1-pole plug-in circuit breaker, rated 20 amperes for 120/240-volt service. This plug-in device is designed to interrupt current and protect a single circuit in installations that use plug-in breakers. The BR120 designation communicates a 1P, 20A, 120/240V rating, tying the model code directly to the breaker’s specifications. In older catalogs and descriptions, it appears as Cutler Hammer BR120, reflecting its historical labeling while it remains an Eaton component. The unit’s role is to provide overcurrent protection for a single branch circuit within the electrical system, identified by the BR120 part number.
