Electrical security is of huge importance since electricity can cause serious injuries and fatalities even. In order to prevent unfortunate and tragic outcomes as well as material damage, it’s wise to work on and enhance electrical security. For that purpose, a thermal overload protector is widely used. In this post, you’re going to learn what a thermal overload protector is and why it is necessary.
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What is a Thermal Overload Protector, and how does it Work?
A thermal overload protector is an electromechanical protection device for the main circuit in different appliances. The device is specifically created to provide reliable protection for motors in the event of phase failure or overload. The instrument is thermally sensitive, and it works by turning the motor off when excessive heat is generated in the motor circuitry. The safety feature, i.e., thermal overload protector, prevents the temperature from climbing which would, otherwise, burn up the motor. Thermal overload protector generally resets itself when the motor cools down to the safe temperature.
How Thermal Overload Protector Works in Different Appliances?
A thermal overload protector is essential for electrical security since it can reduce the risk of damage and unfortunate events. But, how does it work in different appliances?
Electric Motors
Motor overload produces excessive heat, which is a major cause of motor failure. It’s important to mention that although individual components of the motor, such as windings, bearings, and others, may work properly, the motor itself continues to run hot. The main purpose of the motor thermal protection switch here is to turn off the motor and thereby prevent potential damage.
Transformers
Transformer overload occurs when it’s delivering from one to six times its normal current rating. The current is limited or confined to the normal path, but a rise in temperature happens in the transformer itself. The thermal overload protector is created to protect the transformer from potential damage. This device can detect thermal overload based on a calculated hot spot temperature.
Coils
The thermal overload protector is generally small and can be buried inside the coil. This unique position allows the high-temperature cutoff switch to prevent consequences that would occur in cases of overload.
How to Use the Thermal Overload Protector？
Even though the thermal overload protector seems complex, it’s relatively easy to use it. In order to enhance electrical security and get the most from the thermal overload protector, you should use it at a rated current, temperature, and voltage. Otherwise, it would be difficult for the device to provide protection from overload.
Additionally, you should avoid forcibly pulling and twisting the lead wire. Why? The interference or noise produced by one wire is canceled by that of the other wire. In other words, you wouldn’t be able to get the most from the thermal overload protector.
Besides using the thermal overload protector at a rated current and avoiding twisting wires, you should also make sure the heat-sensitive surface is fitted with the heating surface of the protected device. During the installation, it is necessary to insulate the shell.
Why Saftty?
A thermal overload protector is important for electrical safety, but not every manufacturer delivers the same quality. For that reason, the first thing to consider when buying these instruments is the manufacturer that makes them.
To eliminate wasting time on unreliable brands, it’s always useful to get the thermal overload protector from reliable sources. That’s where Saftty steps in.
As a professional manufacturer of thermal protectors, Saftty focuses on innovation and constant improvement of its products. In fact, their thermal overload protector is the first protector to obtain the UL and TUV certifications in China.
Saftty’s thermal overload protector has several applications ranging from motors and transformers to coils and electronic products. Saftty motor thermal protection switch has good sealing performance, and the vacuum degree is -0.09 MPa. This motor thermal protection switch is small in size and has a metal shell with good thermal conductivity. It is a pure temperature product with accurate temperature control.
Conclusion
Keeping in mind that electrical security is of great importance, a thermal overload protector poses as a practical and effective device. The best manufacturer of these instruments is Saftty, a company with extensive experience in this industry. As one of the most reliable companies, Saftty is dedicated to manufacturing devices that enhance the effectiveness and safety of motors, transformers, and appliances. After all, the only way to truly improve the safety aspect is to get your high temperature cutoff switch from a reliable manufacturer.
