Interlock Attachment, Square D QO and QOB Miniature Circuit Breakers, 1, 2 Poles

Square D,Circuit Breaker Mechanical Interlock QO,0.64,1.75,2.75,Circuit Breaker Mechanical Interlock,For interlocking the handles of two adjacent circuit breakers so that only one circuit breaker can be ON at a time,QO,QO and Q1 circuit breakers. One circuit breaker must be a 2-Pole the other can be 1 or 2-Pole,Steel. QO mini circuit breaker accy, interlock, mechanical, compatible with 1 to 2 pole Also known as: 785901520450, QO2DTI ADD A SLANG TERM