DC 750V Electric Vehicle Fuse Over Current Protection Battery Pack Fuse

This products are round tube bolted fuses, which have the characteristics ofsmall size, high breaking capacity, resistance to current impact, and canwithstand high-strength mechanical vibration and impact, wide temperaturerange impact, and strong chemicalload, and are suitable for the road vehicleindustry Application, can be used for short circuit and backup protection ofelectric vehicle drive power system, power conversion system, energystorage and power system, frequency conversion controller, charger, wireand other vehicle devices and equipment.
 

Features of car fuses
 

1. Vibration
The car will be subject to various vibrations when driving continuously on the expressway, when driving on roads with poor road conditions and stone roads, and when idling and parking. The fuse should be able to withstand the vibration of 44.1m/s2 for four-wheel vehicles, and 196m/s2 for two-wheel vehicles. If there is resonance for frequency changes, the function must be guaranteed.

2. Ambient temperature
The car needs to be able to drive in the scorching desert and in the severe cold without any problem. Also, fuses are provided in the compartment and engine room. Therefore, it must function reliably in a large ambient temperature range of -40 to 120°C.

3. Accuracy
The weight of the car has a great influence on the fuel consumption, so the wires also need to be lightweight and use thinner wires as much as possible. For this reason, the energizing current value of the wire is close to the allowable current value, and the fusing characteristics of the fuse must be managed within this narrow range.

4. Reliability
If the fuse is abnormal during driving, stop driving immediately, such as driving on expressways and roads, it may cause major accidents. In today's era when the average age of automobiles exceeds 10 years, fuses are required to have durability to maintain their functions against various environmental changes.

5. Dimensions and weight
Looking at automobiles from the viewpoint of CO₂ emission limits stipulated by international standards, it can be seen that the amount of CO₂ generated during driving is much larger than that generated when producing parts, materials, and vehicles, or when disposing of vehicles. Therefore, for the automotive industry, vehicle weight reduction is an important task, so the fuse is also required to be miniaturized and lightweight while ensuring performance.