OSCB

According to the standards GB18802.1, GB50057, and Q/THQB001-2013, the SPD circuit must be connected in series with an overcurrent protection device as specified by the surge protective device (SPD) manufacturer.However, conventional fuses and miniature circuit breakers (MCBs) cannot properly coordinate with SPDs. When the power supply becomes abnormal or the SPD deteriorates or fails, this mismatch can lead to fire incidents and equipment damage caused by lightning surges, which have already had a serious impact on normal production and business operations.