... high breaking type) 2. According to connection mode of MCCB: Front panel connection (basic connection mode), rear panel ... (V) Rated ultimateshort circuitbreakingcapacity (KA)400/690V Rated serviceshort circuitbreakingcapacity (KA)400/690V Number ofpoles Flashoverdistance CM1-63L 63 ... , 16,20, 25, 32,40, 50, 63 400 500 25 12.5 3 ≤50 CM1-63M 63 ... 42.5/10 3 CM1-400L 400 225, 250,315, 350,400 690 800 50/10 25/ ...