The Hammond 1538M09 is an industrial grade power control center, consisting of a 9-pole rotary switch and a fused, pole-mounted disconnect. It is designed to provide single phase, three-wire system electric power control in industrial or residential applications. It is constructed with a baked enamel steel base and cover, making it both aesthetically pleasing and durable. The rotary switch is a three-position changeover switch with a mechanically interlocked, non-removable handle. Mounted inside the switch is a 9-pole, rotating cast iron contact block assembly. The nine poles are wired in parallel for each contact, allowing for up to three sets of three-wire systems to be connected and controlled by the rotary switch. The fused disconnect is UL approved and designed for use with 15-, 20-, or 30-amp circuits. The contactor has spring-loaded contacts to allow for easy switching. It also features an overload alarm, adjustable auxiliary start-up contacts, and an overload release.