Electrical & Mechanical Interlocking between 2 Incomers(Red) & 1 buscoupler(Yellow)

Electrical & Mechanical Interlocking between 2 Incomers(Red color) & 1 buscoupler(Yellow color). Electrical interlock by using control wiring in closing, tripping circuit. Also used undevoltage coil in Interlocking. Mechanical Interlock by using castle key lock in circuit breakers.