Overcurrent Devices (2)

What are thermal magnetic breakers also known as?

Time limit circuit breakers

During a short circuit, which will trip faster; a thermal-magnetic or thermal-only breaker?

Thermal magnetic

What does the bimetallic strip make contact with when bending?

Tripper bar

What does the trip-free mechanism do?

Even if you force the breaker in the on position, the breaker will still trip and open the contacts

Can a breaker be used as a switch?

Only if marked with S

What are blow-apart contacts?

Short circuit protection using opposing magnetic fields

How quickly do blow-apart contacts operate?

Within 3 to 5 milliseconds of short circuit

What are 3 thermal overload mechanisms?

Solder pot, melting alloy, bimetal strip