QO and QOB one, two and three pole thermal magnetic circuit breakers 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 A full line of factory installed accessories, such as shunt trips, auxiliary switches and alarm switches, is also available This QO mini breaker accessory is a handle tie for 1 pole systems. It is rated for 120/240 VAC. This unit is in commercial packaging.








