The KBPB Series of Relay Reversing DC Drives consist of two models rated for 1/100 to 3 horsepower motors. These chassis drives are a compact version of the KBCC “R”control. The APRM eliminates contact arcing by allowing armature switching to take place only when voltage levels are near zero. Built-in terminal blocks and its small size make the control ideal for installation where space is at a premium. Rated at 0.75 HP@90VDC/1.5 HP@90VDC with external heat sink.