The 3RV101 MSP’s,can be used as components in Group Installation per NEC 430-53(C) to turn motors on and off. Each device has built-in heater elements that provide overload pro tection and magnetic trip elements to protect the motor. When the 3RV101is used as a component in Group Installation, mul tiple MSP’s can be installed below one circuit breaker to pro tect its own motor. A contactor can be mounted to the MSP to provide a remotely operated starter.