QOU miniature molded case circuit breakers are intended for use in residential and commercial applications. These circuit breakers are unit mount thermal magnetic circuit breakers. QOU breakers will automatically open a circuit under overload or short circuit conditions. They have VisiTrip trip indication, which provides a visual indication that the circuit breaker has tripped. You can flush mount, surface mount or DIN rail mount these circuit breakers. This unit is a 1 pole QOU miniature circuit breaker mounting foot. This mounting foot can be used on a low or high amperage QOU circuit breaker.