SIRIUS 3RV motor starter protectors are compact, current-limiting circuit breakers up to 100 A for motor or starter 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. We also offer: Circuit breakers in special versions, e.g. for plant protection – also according to UL/CSA, for transformer protection or overload relay functions.


  • 3RV5 – Up to 100A
  • 3RV6 – Up to 40A
  • 3VS13 – Up to 25A
  • 3VS16 – Up to 52A