Siemens Classified circuit breaker type QD. For use in Square D load centers that accept type QO circuit breakers. 10,000 AIC. Square D is a registered trade mark of Schneider Electric. Reviews There are no reviews yet. Be the first to review “Siemens 20 amps 2-Pole Circuit Breaker” Cancel replyYour email address will not be published. Required fields are marked *Your rating * Rate… Perfect Good Average Not that bad Very poor Your review *Name * Email * Save my name, email, and website in this browser for the next time I comment.