QOU unit mount miniature circuit breakers (cable-in/cable-out) are ideal for OEM applications. QOU breakers are 1, 2 or 3-pole thermal magnetic circuit breakers which provide overcurrent protection and switching on ac and dc systems. These circuit breakers have an over center, trip-free toggle mechanism with quick-make, quick break action and positive handle indication. They also have VisiTrip trip indication, which provides a visual indication that the circuit breaker has tripped and interrupted the circuit. These QOU miniature circuit breakers can be DIN rail mounted, surface mounted or flush mounted using mounting feet. This three pole QOU miniature circuit breaker is rated as 40 A, 240 VAC. This circuit breaker provides 10 kA breaking capacity. A full line of accessories are available for these circuit breakers. The factory installed quick connects will accept one 14 to 2 AWG copper or aluminum wire. This circuit breaker has a maximum height of 4.05 in, a maximum width of 2.25 in and maximum depth of 2.95 in. QOU circuit breakers are UL listed and CSA Certified.