Which device is used for ON or OFF
Which device is used for ON or OFF
A: Fuse
B: Switch
C: Breaker
D: None of these
A switch opens or closes a circuit to turn a device on or off. A fuse protects against overcurrent by melting. A circuit breaker also protects yet it can be reset. The stem asks for the basic control element. Therefore switch is the correct and most direct choice in electrical basics.