Nader Hydraulic Miniature Circuit Breaker (HMCB) is applicable to the rated current from 0.5A to 63A, up to 150A for multiple poles in parallel. In electric systems with the rated voltage not higher than AC230/400V, AC250V, AC480/277V (50/60Hz) or DC80V.HMCB is widely used in computer and its peripheral equipment, industrial automation devices, telecommunication equipment, power supply for telecommunication, UPS equipment, railway-engine, marine electrical systems, aerospace electrical power system, elevator control systems and mobile power equipment. 2021 Quick Selection Guide »