Q-Line® circuit-breakers are 1 in wide per pole, compact, thermal-magnetic devices designed for residential and commercial applications. The QB breakers are bolt-on versions of the Q-Line® used for bolting to the bus connections of load centers and lighting panels. All Q-Line® circuit-breakers feature quick-make / quick-break mechanisms, common trip bars and easy to spot trip indication to ensure safety and reliability. Q-Line® breakers are available in 1, 2 and 3-pole versions, can be ordered with auxiliary contact and shunt trip accessories and can be ordered for use in HID applications.