The Siemens 5SU series is a SENTRON range Instantaneous 2 pole, Tripping class C RCBO circuit breaker, which operates on 230 V AC and has mechanical service life (switching cycles) up to 10,000. RCBOs with a rated tripping fault current of maximum 30 mA are used for personnel, material and fire protection, as well as for protection against direct contact. Degree of protection class IP20 Halogen free Silicon free