Designed for industrial control applications involving the switching of high current loads, such as for lighting, contactors, solenoids, and motors, the G-5AMP5-B Series output modules are plug-in compatible with G4, G5 and C4 mounting racks. The series is intended for direct plug-in control from TTL, CMOS and open-controller drive signals and maintains a true Form B output contact even with loss of power. The output contact opens while the control input is asserted to logic low. Other key features include "zero" off-state leakage current, ac/dc switching capability, and a low current, 125 vdc rating for power plant applications. Models are available for 5V, 12V, 15V and 24V logic, as well as 4-pin types for upgrading existing systems.