Siemens Q24020 – 40/20A Quadplex Miniature Circuit Breaker In Demand

The Q24020 is a Type QT quadplex miniature circuit breaker from Siemens, delivering 40A and 20A protection in a space-saving plug-on design. Built for residential applications, it allows installers to add multiple circuits without requiring a larger enclosure. Mounts into compatible Siemens load centers that accept Type QT breakers. Featuring a non-common trip mechanism and a 10kAIC rating at 120/240VAC, this legacy breaker is replaced by the Q24020CT2 model.