What is the thermal Fuse?

A thermal fuse or thermal cutoff is a safety device which open circuits against overheat. It detects the heat caused by the over-current due to short circuit or component breakdown. Thermal fuses do not reset themselves when the temperature drops like a circuit breaker would. A thermal fuse must be replaced when it fails or is triggered.Unlike electrical fuses or circuit breakers, thermal fuses only react to excessive temperature, not excessive current, unless the excessive current is sufficient to cause the thermal fuse itself to heat up to the trigger temperature.

Thermal  fuse has the characteristics of accurate fuse temperature, high voltage resistance, small size and low cost. There are rated temperature value and rated current value marked on the shell of the thermal  fuse. It can be widely used in electric equipment, electric heating equipment and practical electrical appliances and other occasions, for overheating protection.

Thermal fuse mainly has the following parameters:

(1) rated temperature: sometimes also known as the operating temperature or fuse temperature, it refers to the case of no load, the temperature at the rate of 1℃ per minute to fuse the temperature.

(2) fuse accuracy: refers to the difference between the actual fuse temperature and the rated temperature of the thermal  fuse.

Rated current and rated voltage: general thermal fuse nominal current and voltage have a certain margin, usually 5A and 250V.

Temperature fuse is a disposable protection element, its use effect not only depends on the performance of the element itself, more important is how to correctly choose and install the temperature fuse. When the temperature fuse is used in the circuit is generally connected in series, so when selecting the temperature fuse must make its rated current value greater than the current used in the circuit, never allow the current through the temperature fuse to exceed the specified rated current value. Before selecting the rated temperature of the temperature fuse, it is necessary to understand and actually measure the temperature difference between the temperature to be protected and the position of the installation fuse. In addition, the length of the fuse time, ventilation and so on to choose the rated temperature of the temperature fuse is also closely related.

If the fuse is not installed in the home appliances, our daily life is in danger. Average consumer pays little attention to the effective soldier that defends home appliance, but such an inconspicuous accessory, decided the quality of home appliance.

What’s the purpose of a thermal fuse?

The purpose of a Thermal fuse is typically to be a cutoff for heat producing devices. As the name implies, thermal fuses are usually found in heat-producing electrical appliances such as coffee makers and hair dryers. They function as safety devices to disconnect the current to the heating element in case of a malfunction (such as a defective thermostat) that would otherwise allow the temperature to rise to dangerous levels, possibly starting a fire.

What’s the purpose of a thermal fuse?

The purpose of a Thermal fuse is typically to be a cutoff for heat producing devices. As the name implies, thermal fuses are usually found in heat-producing electrical appliances such as coffee makers and hair dryers. They function as safety devices to disconnect the current to the heating element in case of a malfunction (such as a defective thermostat) that would otherwise allow the temperature to rise to dangerous levels, possibly starting a fire.

Application range of temperature fuse:

Home appliances: coffee machine, electric iron, hot hair dryer, refrigerator, air conditioner, rice cooker, power harness, smart toilet, namely hot water faucet, motor.

Automotive: battery pack, electromagnetic clutch, speed control resistance, car seat.

Medical equipment: cardiac pacemaker, sleep ventilator, etc.

Equipment: photocopier, gluing machine, etc

Note: Google

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