ABB KTS3MI-H Mechanical Interlock Between 2 Circuit Breakers is a purely mechanical interlock kit that sits between two adjacent circuit breakers to prevent both from being closed at the same time.
It enforces mutual exclusivity so only one breaker can be energized at a time, helping to prevent backfeed and parallel conduction in dual-breaker configurations.
This interlock is part of ABB's family of mechanical interlock solutions for two-breaker installations, with mounting and compatibility details documented in ABB technical literature.
