Interlocking of Circuit Breakers with Toggle Control
Interlocking involves padlocking the toggle handles on two devices which may be either circuit breakers or automatic switches.
one device closed (ON), the other open (OFF)
both devices open (OFF).
The system is locked using up to three padlocks (shackle diameter 3/16–5/16 in. [5 to 8 mm]).
The devices must be unit mount construction, circuit breakers can be mounted via backpan mount or DIN rail. Interlocking is not available for I-Line constructions.