Siemens din rail circuit breaker switch 1 pin tripping characteristic c siemens 5sl6120 7 the siemens 5sl6120 7 is a 1 pin miniature circuit breaker from the 5sl6 series and is intended for use up to 6ka10ka it is suitable for the quick and easy mounting of additional components such as auxiliary switches and fault signal contacts the 5sl6 miniature circuit breakers can also be combined with shunt trips under voltage releases and arc fault detection devices the 20a circuit breaker wi