QD 3/4" Classified Breakers
Siemens QD breakers are UL listed breakers which utilize the 3/4" format. All QD breakers have 10K AIC rating. The type QD circuit breaker line is available in 1 Pole and 2 Pole common trip versions. The circuit breakers are UL Classified and UL Listed. All QD breakers are supplied with load side connectors suitable for 60/75 degrees C wire and are calibrated for 40 degrees C maximum ambient applications.
Siemens Type QD circuit breakers are UL Classified for use in specific Square D Load centers in place of Square D Type QO(r) circuit breakers. The interrupting rating on these circuit breakers is 10,000A IR maximum and they are not series rated with Square D circuit breakers or equipment. This UL Classification allows a Siemens Type QD circuit breaker to be used in place of a Square D Type QO circuit breaker in specific load centers.