... to IP20), high breaking capacity, reliable sensitive action, convenient multi-pole assembling and long life. They are mainly adapted to the ... circuit of AC 50Hz,230V in single-pole, 400V in double/three/four-pole for protecting overload and short circuit. Meanwhile ... circuit breaking capacity of DC: max. 48V (KL7, 10kA) single-pole, max. 250V (KL7-DC, 6kA) single-pole5) Performance: C, D ...