A wide range of Siemens SIRIUS 3RV101, 3RV102 and 3RV103 Circuit Breakers that can be used as Type E self-protected manual combination starters per UL508, or as components in Group Installation to turn motors On and Off. Each device has built-in heater element that provides overload protection and magnetic trip elements to protect the motor.
When the 3RV is used as a component in Group Installation, multiple MSP's (Motor Starter Protectors) can be installed below one circuit breaker to protect its own motor. A contactor can be mounted to the MSP to provide a remotely operated starter. The circuit breakers can used to protect three-phase motors to 45kW at 400V AC. The circuit breaker 3RV1 can be used with it's short-circuit and overload protection for motor protection, transformer protection and system protection.
They guarantee safe disconnection in the event of a short circuit and protect loads and the system from overload. They are also suitable for normal switching duty with loads that have a small number of switching operations as well as for reliable isolation of the equipment from the supply system.