The Fuse Manufacturer Tells You How To Choose A Drop-out Fuse?

1. Determine according to different usage scenarios and parameters
When the protection object of drop out fuse is different, the type of 11 kv drop out fuse is also different. For example, for the protection of small-capacity lighting circuits or low-power motors, it is advisable to use RC1A series plug-in 11kv drop out fuse, because the melting coefficient of the melt is small, which is conducive to the overcurrent protection of the circuit. On the contrary, for the protection of large-capacity circuits or high-power electrical appliances, other overcurrent protection devices should be installed on the basis of 11kv drop out fuse manufacturer.
If you encounter a circuit with a large expected short-circuit current or a flammable gas, you can consider choosing the RL series spiral 33kv drop out fuse or RT series 33kv fuse with breaking capacity. Otherwise, you can use RM10 series cover drop out fuse.

2. It should be well matched with the overload characteristics of the protected object
Most electrical equipment has a certain overload capacity. Under certain conditions, small-amount, short-term overload operation is no problem. For example, when a high-power appliance such as an air conditioner is started, the current will double. drop fuse must adapt to this characteristic, otherwise it will be a very troublesome thing to easily fuse.

3. Avoid over-level fusing
There should be good coordination between each level of drop fuse cutout. Generally, the rated current of the upper fuse is about 2 to 3 times greater than that of the lower fuse. When a fault occurs, the lower level drop out expulsion fuse will fuse first. After it fuses, the upper level drop out fuse 22kv can automatically recover. Otherwise, once over-level fusing occurs, a small short circuit in the wire may cause a large-scale power outage.