rear interlock mounting plate accessory for: 3VA1 160 Blocking, interlocking and locking for compact compact circuit breakers 3VA. The 3VA molded-case circuit breakers have a wide range of locking and interlocking functions to prevent unauthorized switch-off and switch-on. Key features of these accessory components: 1. The locking devices allow you to lock the 3VA molded-case circuit breaker in either the OFF or the ON position to prevent unauthorized switch-on or switch-off. 2. Available as locking device for toggle handle, cylinder lock (Ronis) for locking one switch. 3. Available as toggle lever interlock, toggle lever interlock with Bowden wire, interlock at back for interlocking up to 3 switches. &DPMD_ACC602_001_000_1003332&