Selection of current limiting fuses
In the load switch-fuse combination appliance, the load switch is responsible for breaking the normal current or the transfer current, and the fuse is responsible for breaking the overload current and short-circuit current. , so the selection of current limiting fuse is very important. The selected current-limiting fuse should have the characteristics of high breaking capacity, small minimum breaking current, low operating temperature, steep time-current characteristic curve, and small characteristic curve error. At the same time, it should meet the requirements of aging resistance, various installation forms, and suitable external dimensions. And it should be noted that when the ambient temperature is 40 degree , the power loss of the circuit breaker should not exceed 75W.
When choosing a fuse, the rated current of the fuse should match the capacity of the transformer. Some people think that it is wrong to choose a fuse with a larger rated current, which will not only cause economic waste, but also make the "time-current characteristic" of the fuse worse, reduce the protection speed, and affect the correct breaking protection of the fuse. .
Abundant Fuses, product line covers all relevant areas of new energy vehicles (Pack, PDU, BDU, Electric control, Motor, MSD, Low voltage wiring harness), Charging system and the Charging Module, Photovoltaic PV Solar junction box, photovoltaic inverter, UPS power supply, 5G Communication power supply, BS UK plug, Electrical Home Appliances Control Panel, Lighting drive Power Supply and so on.
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