This Square D EJB34040 circuit breaker is a reliable and high-quality choice for your branch circuit needs. With a maximum amperage of 40 A and voltage of 480, it comes in a sleek black color and is made of durable aluminum material. Its tripping characteristics are Type A and it operates on an On/Off method, with three throws and positions. It is designed with three poles and is a bolt-on style panel, with a number of circuits ranging from 31-40. The EJB model also features short circuit protection and is a Type A breaker. This circuit breaker is perfect for a variety of applications and is a must-have for electrical equipment and supplies.