This Westinghouse circuit breaker is a reliable choice for commercial and industrial applications. With a maximum amperage of 40 A and a current rating of 31-40 A, it operates using an on/off operation method and has three poles for added stability. The voltage range is 451-500 V, making it suitable for a variety of electrical equipment and supplies. This black circuit breaker model EH3040 is seller refurbished and designed for use with alternating current (AC). It is categorized under business and industrial electrical equipment and supplies, specifically circuit breakers and disconnectors. Whether you need it for a new installation or to replace an existing one, this Westinghouse circuit breaker is a great choice.