Siemens Q23020CT2 30/20A Quadplex Miniature Circuit Breaker

This breaker is designed for use in Siemens EQ, Ultimate, ITE, and Gould load centers that accept Type QT breakers. It features a CTL rejection clip, meaning it will only fit into panel slots specifically notched to accept tandem or quadplex breakers.

Yes, the Siemens Q23020CT2 is the direct, manufacturer-approved replacement for the obsolete Murray MP23020CT2. It provides the exact same fit and function for panels that previously used the Murray version.

This quadplex breaker requires two standard 1-inch panel spaces. It provides two independent 240V circuits (one 30A and one 20A) in the physical footprint of a standard two-pole breaker, making it ideal for maximizing limited panel space.

The CT2 indicates that this quadplex breaker features an internal common trip mechanism for both the inner and outer pole pairs. If a fault occurs on one leg of either the 30A or 20A circuit, both legs of that specific circuit will trip simultaneously, preventing a dangerous partial-power situation.

The lugs on this breaker accept 14 to 6 AWG copper wire or 12 to 6 AWG aluminum wire. Always ensure your wire gauge is properly sized for the respective 30A or 20A circuit load and torque the terminals to the manufacturer specifications.

Yes. Because the Q23020CT2 features common trip functionality on both the 30A and 20A pairs, it meets the safety requirements for multi-wire branch circuits or dedicated 240V loads like water heaters, dryers, or baseboard heaters.

Yes, this breaker is HACR rated, meaning it is certified for use with heating, air conditioning, and refrigeration equipment that requires a 30A or 20A circuit.