The CUTLER HAMMER KDB3400W is a high-quality 3-pole circuit breaker designed for industrial use. With a maximum amperage of 400A and the ability to handle up to 600V, this breaker is reliable and efficient for various electrical applications. Featuring a tripping mechanism, the KT3400T trip ensures that the circuit breaker can quickly and safely disconnect in case of a fault. With the trusted brand of CUTLER HAMMER, this circuit breaker is a durable and dependable option for ensuring the safety and functionality of electrical systems.