Homeline generator panels are for the manual transfer from utility to generator power. This generator circuit breaker interlock kit is for use on "S" Series NEMA 1 and "S1"Series NEMA 3R Homeline generator load centers. It is used to interlock a QOM2 two pole main circuit breaker of the load center (150A to 225A) with a Homeline two pole (15A to 125A) branch circuit breaker. This interlock kit has a maximum height of 2.5 inches, a maximum width of 4.07 inches and maximum depth of 0.57 inches. This interlock kit is packaged in a clam shell.