Circuit breaker
part · 1924 · Electric age
Cuts off the circuit when it is overloaded.
Principles and materials it uses
- Electromagnetism — uses. An electromagnetic trip.
- Bimetallic strip — uses. The thermal trip is a bimetal strip.
- Copper — is made of. The contacts are copper.
- Bakelite — is made of. The body is Bakelite.