Product Overview
Upgrade or expand your electrical system with the Siemens 40 Amp Double-Pole Type QD Circuit Breaker—a UL-classified replacement for Square D QO breakers. This 3/4-inch plug-in breaker is ideal for residential or light commercial applications and fits directly into QO load centers. Offering both affordability and performance, it’s perfect for new installations or breaker replacements.
✅ Key Features & Benefits
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? Square D QO Compatible – Plug-In Format
Designed to snap directly into Square D QO load center busbars for a seamless fit. -
? UL Classified & Tested
Meets and exceeds UL 489 standards for safety and reliability. -
⚙️ 3/4-Inch Snap-On Breaker Design
Compact, space-saving form factor with easy installation in tight panels. -
? Rated for 40°C Ambient
Calibrated for consistent performance in residential and light commercial environments. -
? Load Side Connectors for 60/75°C Wire
Comes ready for copper or aluminum wire connections, improving versatility. -
? HACR and SWD Rated
Suitable for use with HVAC equipment and switching fluorescent lighting loads. -
? Residential & Commercial Use
Designed for reliable overcurrent protection in homes, rental properties, and light commercial setup
