... high breaking capacity, reliable sensitive action, convenient multi-pole assembling and long life. They are mainly adapted to ... of AC 50Hz,230V in single-pole, 400V in double/three/four-pole for protecting overload and short circuit ... breaking capacity of DC: max. 48V (KL7, 10kA) single-pole, max. 250V (KL7-DC, 6kA) single-pole5) Performance: ... 20,000 times switching operation L7 10ka 2 pole mcb breaker