Several ways to protect electric heating tubes

Several ways to protect electric heating tubes

With the development of technology and the progress of the times, people's quality of life is constantly improving, and the requirements for the shape, function, and especially safety of household appliances are becoming higher and higher. In Europe and America, electric heating tube products with thermal protection functions are widely used in inflatable portable bathtubs, electric heaters, electric kettles, and other products. The electric heating tube with thermal protection function plays a role in temperature control and overheating safety protection of the product. There are two common ways to protect electric heating tubes:

1, Built in thermal fuse:

Thermal fuse, also known as temperature fuse. When the working temperature exceeds the rated temperature of the thermal fuse, the thermal fuse can quickly interrupt the circuit to avoid the harm caused by overheating.

Characteristics of thermal fuses:

Cut off the current with a one-time action.

1. The current interruption capability reaches 250 VAC/25A.

2. The resistance value is low.

3. Small in size.

The working principle of a thermal fuse:

The effective triggering mechanism of a thermal fuse is a non-conductive thermosensitive pill made of a unique formula. At normal operating temperature, the solid thermosensitive ball presses against the spring, keeping the contacts in contact. When reaching a predetermined temperature, the thermosensitive ball 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. For a specific introduction to thermal fuses, please refer to the official blog:

Click this link: Introduction to Thermal Fuses

2, Built in small temperature controller:

Inside the electric heating tube, place a small temperature controller. When the temperature reaches a certain level, the circuit of the electric heating tube will automatically disconnect. When the temperature drops, the circuit will be connected and the electric heating tube will work normally.

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