What is the electric breaker that uses a wire burnout
You're referring to a type of electrical breaker that uses a wire to detect overcurrents and trip the circuit!
The electric breaker you're describing is likely a "Thermal-Magnetic Breaker" or a "Thermal-Magnetic Trip Unit". These breakers use a combination of thermal and magnetic principles to detect overcurrents and trip the circuit.
Here's how it works:
- Thermal Element: A thin wire (usually made of a thermally sensitive material like copper or aluminum) is embedded in the breaker's mechanism. This wire is designed to heat up when there's an overcurrent flowing through it.
- Magnetic Element: A magnetic coil is also present in the breaker's mechanism. This coil is connected to the thermal element and is designed to respond to changes in the magnetic field caused by the overcurrent.
- Overcurrent Detection: When an overcurrent flows through the breaker, the thermal element heats up, causing the magnetic coil to become magnetized. This magnetization causes the breaker's trip mechanism to engage, which ultimately trips the circuit.
- Wire Burnout: In the event of a severe overcurrent, the thermal element can melt or burn out, causing the breaker to trip. This is often referred to as a "wire burnout" or "thermal trip".
Thermal-Magnetic Breakers are commonly used in residential and commercial electrical systems to protect against overcurrents, short circuits, and ground faults. They're designed to provide fast and reliable tripping action to prevent damage to equipment and ensure safety.
It's worth noting that there are other types of breakers that use different principles to detect overcurrents, such as electronic trip units or arc-fault circuit interrupters (AFCIs). However, Thermal-Magnetic Breakers remain a popular choice due to their simplicity, reliability, and effectiveness.