Siemens Type QD Circuit Breakers are Replacement for Square D type QO.
Siemens Type QD Circuit Breakers are used in used in Square D load centers that accept type QO circuit breakers. Available types are Classified Circuit Breaker Type QD Replacement for Square D Type QO and Circuit Breaker Type QD. Amps range from 15-60. Available with 1 or 2 poles. Types are Basic or Clamshell. Voltages are 120/240 and 120. UL Listed.