Siemen s HGB1B020 is a 1-pole, 20-amp circuit breaker rated for 600 V, delivering reliable overcurrent protection for a single branch circuit. The HGB1B020 designation identifies its 1-pole configuration and 20 A current rating within the Siemens HGB family. It interrupts current to safeguard wiring and connected devices from overloads or short circuits in electrical installations.
