Siemens QF240A GFCI Breaker 40A, 2-Pole, 120/240V | Self-Test & Lockout, 10,000 AIC

Protect your home circuits with confidence using the Siemens QF240A GFCI Breaker. This 40 amp, 2-pole device features a self-test and lockout system that continuously checks protection status and prevents resets if an issue is detected. Designed for reliability, it supports safer operation in busy living spaces and wet-area zones, where ground faults and arc faults require swift, clear responses.

As a dual-function breaker with robust interrupting capacity, the QF240A blends practical protection with everyday usability. It delivers strong performance in kitchens, bathrooms, spas, hot tubs, and other high-moisture environments, while adhering to UL safety standards. The self-test feature aligns with UL 943 requirements, adding an extra layer of assurance without introducing complexity to routine use.

Key specifications at a glance

• Double pole, 40 Amp, type QPF2 GFCI Circuit Breaker
• 10,000 AIC interrupting rating
• Self-test feature required by UL 943 for added safety
• Class A GFCI protection
• Suitable for spas, hot tubs, kitchens, bathrooms, and other construction scenarios

Use cases and daily use considerations

• Ideal for multi-wire branch circuits and humid or wet-area installations
• Automatic self-test helps maintain protection status over time
• Lockout prevents user resets if the device detects a compromise, reducing confusion
• Easy installation in compatible panels with standard wiring practices

Note: This device is designed to provide reliable protection while remaining user-friendly. For installation, follow your panel manufacturer’s instructions and local electrical codes, and consider professional guidance when upgrading or retrofitting electrical panels.