This AMP circuit breaker is the perfect solution for your battery UPS main power needs. With a maximum amperage of 400A and DC current type, it is designed to provide reliable and safe power to your devices. The DHM1B-400 2 pole circuit breaker is easy to install and is a great addition to your electrical equipment and supplies. Whether you're looking for a circuit breaker for your business or industrial needs, or for your personal use, this AC DC 400A circuit breaker is a great choice. It is manufactured by AMP, a trusted brand in the industry, and is designed to provide high-quality and reliable performance.