What are thermal magnetic circuit breakers? 

Thermal magnetic circuit breakers are specialised electrical devices designed to protect circuits from overcurrents. Like any other typical circuit breaker, these types of circuit breakers detect overloads or short circuits and automatically disrupt the flow of the electrical switch. 

The only difference between thermal magnetic circuit breakers and other types of circuit breakers is that the former uses an electromagnetic bimetallic strip to identify overload and consequently break the electrical connection. 

Applications

Thermal magnetic circuit breakers are commonly used in applications where more than one electrical circuit is involved. For example, they are often found in distribution boards and subsidiary circuits operating in an overall electrical supply system.

Things to consider while using thermal magnetic circuit breakers

Thermal magnetic circuit breakers need to be handled with proper precaution and care, to ensure overall electrical safety and effectiveness. To do so, it is important to:

• Adhere to the manufacturer’s directions and guidelines. 
• Minimise electrical power usage in a single circuit to prevent overstressing. 
• Avoid keeping heavy-consumption devices on different circuits. 
• Reassess the condition of the existing electrical system from time to time. 
• Install GFCI or Ground Fault Circuit Interrupter Outlets.