The USED Eaton/Cutler-Hammer QBHW1020S 20A 1P Shunt Trip Circuit Breaker is a reliable electrical component designed for industrial and commercial applications. With a maximum amperage of 20A and a voltage rating of 240V, this bolt-on circuit breaker is suitable for various electrical systems. The single pole design and specific model number make it easy to identify and install in the desired system. Trust in the Cutler-Hammer brand for quality and performance in circuit breaker applications.