STLH services isolating switch is suitable for distribution and control loop ... working voltage 230 or 400V . STLH services isolating switch is suitable for distribution and control loop of AC ... or 400V and below,mainly used as main switch for terminal electrical appliances,also can be applied ... 3 and IEC60947-3. Main technical parameters Rated voltage(V) 230/400Rated current(A) 32,63,100Rated making ...