Siemens Q24030CT2 Quadplex 30A + 40A Double Pole Circuit Breaker | 1/2-Inch Plug-In, Space-Saving

Space-saving circuit protection for modern panels

In many homes, a growing list of circuits can outpace the available spaces in a load center. The Siemens Q24030CT2 Quadplex Double Pole Circuit Breaker is designed to help you add circuits without sacrificing panel organization. With a 1/2-inch frame, this unit lets two double-pole breakers fit in the footprint of a single standard breaker, which can be especially helpful when upgrading a panel that is nearing capacity.

Key features at a glance

• One 40A double-pole and one 30A double-pole breaker
• Quadplex 1/2-inch frame for compact installations
• Plug-in type for quick replacements in compatible Siemens load centers
• UL listed for safety and reliability

The device is intended for use in Siemens EQ, Ultimate, ITE, and Gould load centers and meter combinations that are rated to accept type QT breakers. To protect your equipment and warranty, only Siemens breakers are recommended for these panels, and used breakers are not approved.

Practical use cases

• Add a new circuit for a kitchen remodel or finished basement when panel slots are limited
• Upgrade a workshop or garage with dedicated circuits for tools and charging stations
• Expand a home office or entertainment area without a full panel replacement

Installation considerations

• Verify the panel is QT-compatible by checking the wiring diagram
• Have a qualified electrician perform the installation to ensure proper lugs, torque, and safety
• Avoid using second-hand breakers to protect warranty and performance

Overall, the Q24030CT2 offers a practical path to expanding electrical capacity in a compact, plug-in package. While outcomes depend on your panel and exact use, this design may help you organize and protect additional circuits more efficiently.