Murray strongly recommends against the use of used breakers
Circuit Breaker Type Shunt Trip
CUT4178B06H01
General Purpose fuses have no time-delay and protect fuse panels
refrigerators
Square D - Circuit Breaker 30a - QOB230-1021 Murray strongly recommends against the'Bolt On Circuit Breaker, 30 Amps, Number of Poles 2, Circuit Breaker Type Shunt Trip, AC Voltage Rating 240VAC, DC Voltage Rating 48VDC, For Use With Square D NQOD Panelboards, Series QOB, Terminal Connection Screw Clamp, Max. AIR Rating 10 kA, Frame Size 100A QO, Min. Wire Size 14 AWG, Max. Wire Size 8 AWG, Length 3. 00 In., Width 2. 25 In., Depth 2. 91 In., Standards UL Listed, CSA Certified'