The Square D QO2201021 Shunt Trip Circuit Breaker is a reliable and efficient electrical component designed for industrial and commercial applications. This 2-pole circuit breaker with a maximum amperage of 20A operates on the on/off method, making it easy to use and control. With a voltage capacity of 120/240VAC, this main breaker is suitable for various electrical systems. Proudly manufactured in the United States by Square D, this circuit breaker ensures quality and performance in a range of industrial settings.