Correct option is D
For household wiring and small units, an
MCB (Miniature Circuit Breaker) is commonly used for safety measures.
MCBs automatically switch off electrical circuits during overload or short circuits to protect the wiring and appliances.
They are reliable, easy to reset after tripping, and provide enhanced protection for residential and small commercial setups.
OCB (Oil Circuit Breaker),
ACB (Air Circuit Breaker), and
VCB (Vacuum Circuit Breaker) are generally used for industrial or high-voltage applications, not household wiring.
