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muh1 series

dedicated back-up protection device for power surges
according to relevant provisions of gb50057-2010 and iec61643-4-43 standards: “a suitable overcurrent protection device should be taken before the circuit causes danger to address the problem of rapid trip when the spd (surge protector) when there is a dangerous frequency continuous current or dangerous frequency leakage current of the spd, and the safety of no false trip by lightning current, to ensure that the spd does not catch fire, and lightning protection continues to be effective.”

modular design for smart identification

● isolation function
● it can be assembled with accessories for remote signaling contacts
● smart identification of lightning current and industrial frequency current

ultimate protection for safe and reliable

● muh1 residual voltage at both ends of the surge is lower, and the corresponding muh1 branch has a lower effective voltage protection level, thus the equipment can be better protected
● it adopts modular structure to assemble into a whole, with independent protection for each phase, flexible combination with spd, and installation by 35mm standard rail

flexible and high performance

● optional surge withstand capacity of 20ka (8/20μs), 40ka (8/20μs), 65ka (8/20μs), 80ka (8/20μs) 100ka (8/20μs), 120ka (8/20μs)
● the muh1 protects spds from tov damage, can cut off high short-circuit currents up to 100ka, and can cut off low short-circuit currents above 3a in a very short period of time
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