... . of pole: 1p, 2p, 3p, 4p.4. Breaking capacity (see table1).table1Rated current(A)PoleRated Voltage(V)Rated short-circuit breaking ... current (A)COSφ1~631230,230/40060000.72,3,440060000.7 Feature1. Much higher short circuit breaking capacity.2. ... -retardant,heat-resistant and impulse-proof properties.7. Higher current-limiting capacity ensuring a cost-effective range of products. OB8-63 ...