With Model RSA-187C, technicians can remotely close or open General Electric J-Line molded case circuit breakers from safe distance while remaining stationed outside arc-flash boundary. Installation and operation does not require modifications to existing electrical equipment. Actuator is compatible with all type 600 A frame size THJK, TJ, TJC, TJD, TJJ, TJK, and TJL circuit breakers commonly used in switchboards, motor control centers, and lighting, power, and customized control panel boards.