Terasaki TB2C 3P Mechanical InterlockThe Terasaki TB2C Mechanical Interlock is used in dual source power systems where two MCCBssuch as utility and generator suppliesmust never be ON at the same time. This mechanical interlock physically blocks one breaker from closing while the other is in the ON position, eliminating the risk of back feeding and electrical faults. Engineered for TERASAKI TEMBREAK MCCBs, the TB2C 3 pole mechanical interlock delivers smooth mechanical operation, high