The industry leader in circuit protection is easily recognized by the industrys only trip indicator?the red VisiTrip? Indicator makes it easy to spot a tripped circuit breaker. Compact 3/4 in. wide format for onepole circuit breakers helps minimize panel space and footprint. The Square D? exclusive QwikOpen? protection is standard on all 15 A and 20 A circuit breakers? trip reaction within 1/60th of a second. No other circuit breaker trips faster.A comprehensive selection of 10kA rated circuit breakers is available including: QO? onepole standard circuit breakers (10 A to 70 A) QO twopole standard circuit breakers (10 A to 200A) QO threepole standard circuit breakers (10 A to 100 A) QO tandem circuit breakers (15 A to 20 A) QO groundfault circuit interrupters (1 and 2pole, 15 A to 60 A; 3pole 15 A 50 A) QOEPD circuit breakers with 30 mA equipment groundfault protection (1pole, 2pole, 15 A to 60 A; 3pole, 15 A 50 A) Square D arcfault circuit interrupters (1pole, 15 A and 20 A) Square D combination arcfault circuit interrupters (1pole, 15 A and 20 A) QOK circuit breakers, key operated (1pole, 10 A to 30A) QOSWN circuit breakers with switch neutral common trip, NEC 5145 (2 and 3pole, 10 A to 50 A) QOHID circuit breakers for circuits feeding fluorescent or high intensity discharge (1, 2, and 3pole, 15 A to 50 A) A full line of factory installed accessories, such as shunt trips, auxiliary switches and alarm switches, is also available. QO subfeed lugs, 2pole rated 60A, 125A and 225A; 3pole rated 125A. Additional products available with interrupting ratings of 22kA, 42kA and 65kA. Plugon QO circuit breakers are for use in QO load centers, NQ panelboards or SpeedD switchboard distribution panels. Bolton QOB circuit breakers are for use in NQOD panelboards.