How To Choose A Thermal Fuse?
Do you know how to choose a thermal fuse? The following are the things you need to pay attention to when choosing a thermal fuse, I hope it will help you.
1. What is the normal working current of the fuse, whether it can not be blown when the circuit is working normally, and whether it can be blown in time when the circuit is overloaded.
2. Whether the working voltage of the circuit is suitable, the working voltage of the circuit must be less than the rated voltage of the fuse under standard conditions.
3. The circuit is overloaded. After the fuse is blown, the circuit can be disconnected, so that the overload circuit is completely disconnected and cannot pass through other circuits, so as to effectively protect the safety of the circuit.
4. The shortest and longest time allowed for abnormal currents.
5. The ambient temperature of the fuse must not exceed the limit that the fuse can withstand. The temperature of some circuits tends to rise during operation, so you need to choose a suitable thermal fuse for protection.
6. The fuse must be able to withstand pulses, impulse currents, surge currents, starting currents and circuit transients. It must be ensured that it will not fuse under normal circuit operation, and will fuse when the circuit is abnormal or overloaded.
7. Whether the size of the fuse in the circuit installation structure is appropriate, in some circuits with small spaces, some fuses have insufficient space for installation, and some miniature fuses are needed to install in small circuits.
