Several ways to protect electric heating tubes

1、 Built in thermal fuse:
Thermal fuses, also known as temperature fuses. When the working temperature exceeds the rated temperature of the thermal fuse, the thermal fuse can quickly interrupt the circuit and avoid the harm caused by overheating.
Characteristics of thermal fuses:
Cut off the current with a single action.
1. The current interruption capacity can reach 250 VAC/25A.
2. The resistance value is low.
3. Small size.
The working principle of thermal fuses:
The effective triggering mechanism of a thermal fuse is a non-conductive thermosensitive pellet made of a unique formula. At normal operating temperature, a solid thermosensitive pellet supports the spring to maintain contact with the contacts. When a predetermined temperature is reached, the thermosensitive pellet will melt, causing the compression spring to relax, and the circuit breaker spring will push the contact away from the contact wire, causing the circuit to be disconnected.
2、 Built-in small temperature controller:
Inside the electric heating tube, a small temperature controller is placed. When a certain temperature is reached, the circuit of the electric heating tube automatically disconnects. When the temperature drops, the circuit is connected and the electric heating tube operates normally.