The Eaton Cutler-Hammer QBHW1030 U is a 30-amp, 120-volt single-pole circuit breaker. With a 1P configuration, it interrupts current on a single hot conductor to protect a 120V branch circuit from overcurrent and prevent wiring damage or fire hazards. The QBHW1030 U designation identifies a model within Eaton’s Cutler-Hammer line. Its primary specifications are a 30 A rating and 120 V operating voltage, making it suitable for standard 120V circuits in residential or light commercial installations that require a 30-amp protective device.
