General description 3rv1 breakers are compact current limiting circuit breakers which are optimized for load feeders the switches are used to switch general description and protecting three phase motors to 45 kw at 400 v ac or to other consumers with current ratings to 100a breaker 3rv1 and 3rt1 contactors are electrically and coordinated in design and can therefore be easily combined to divert consumers the circuit breaker 3rv1 can be used with its short circuit and overload protection fo