Square D Tandem Mini Circuit Breaker QO2020C – 2 x 1 Pole, 20A, 120/240VAC, 10kA, Plug-In Mount

Overview

The Square D Tandem Mini Circuit Breaker QO2020C is a compact two-pole protection device designed for panels that support tandem breakers. It houses two independent 1-pole circuits at 20A each, suitable for 120/240VAC installations, while delivering a robust 10kA interrupting capacity. Its plug-in mounting streamlines installation, and the unit includes a visible trip indicator for quick status checks when needed.

Built with safety and reliability in mind, this breaker uses a trip mechanism that responds to overloads with thermal action and to short circuits with magnetic action. It is UL Listed and CSA Certified, reflecting adherence to recognized standards. The tandem configuration is specifically designed to work in QO panels that allow tandem breakers, which helps maximize panel capacity where space is at a premium.

Key features

• Two independent 1-pole circuits at 20A in a single tandem unit for 120/240VAC service
• Thermal-magnetic trip protects against overloads and short circuits
• VisiTrip trip indication provides a clear, at-a-glance status
• 10,000 A interrupting capacity for defined protection margins
• Plug-in installation with a standard QO panel interface
• UL Listed (E84967) and CSA Certified (Master Contract 153555)
• Compatible only with QO panels that support tandem breakers
• Accessorized options available, such as shunt trips, auxiliary switches, and alarm switches

Why choose this tandem breaker

For spaces where panel real estate matters, the QO2020C helps you fit more protected circuits without expanding the panel footprint. It is well suited for applications requiring two 20A branches in a compact form, while maintaining clear protection and status visibility. The unit’s plug-in design supports straightforward swaps or upgrades in compatible panels, and its certification ensures alignment with common electrical safety standards.

Real-world use cases and considerations

Consider a home workshop or small office where two separate 20A circuits share a single physical location in the panel. The QO2020C provides two protected lines in one device, enabling efficient wiring layouts and easier maintenance. Before purchase, verify that your panel model accepts tandem breakers and review installation guidelines to ensure proper fit and access to the tandem slots. The availability of factory-installed accessories further expands potential configurations for control and monitoring.

What’s in the box and beyond

This tandem breaker ships in a clam pack, designed for safe handling and storage. In addition to the core protection features, you can explore optional accessories to tailor the unit to specific control needs or alarms within your electrical system.