Siemens QF120A GFCI Circuit Breaker – 20A, 1-Pole, 120V, Self-Testing

Overview

The Siemens QF120A GFCI circuit breaker pairs plug in convenience with proactive protection for modern homes. This 1-pole device supports up to 20 amps at 120 volts, making it suitable for a variety of circuits where ground fault protection matters. A standout feature is the self test and lockout system that runs continuously to verify proper operation between routine checks. If the device detects a compromise, it trips and prevents a reset, helping to avoid situations where protection might be assumed to be active when it is not.

Key benefits

• Single pole, 20 Amp, QPF2 GFCI protection for everyday circuits in kitchens, baths, and more
• 10,000 AIC interrupting rating delivers strong fault handling for demanding installations
• Self-test capability required by UL 943 as an added safety feature
• Self-test plus lockout reduces the risk of unsafe resets by users
• Versatile for spas, hot tubs, kitchens, bathrooms and other moisture-prone areas
• Class A GFCI protection provides reliable ground fault sensing

Real-world use scenarios

Picture upgrading a kitchen circuit during a renovation, or equipping a bathroom or spa area with dependable protection. The plug-in design supports quick replacement in compatible panels, and the compact form fits tight electrical spaces without sacrificing performance.

• Residential kitchens and bathrooms with dedicated outlets and lighting
• Outdoor spa installations where moisture protection is essential
• Renovation projects seeking a reliable, UL 943 compliant option
• New construction requiring robust ground fault protection

Notes on installation and safety

Designed for 120-volt systems, this 1-pole unit is built to fit a variety of construction applications. While it provides enhanced protection, follow local electrical codes and best practices during installation. Routine inspection remains important even with automatic self-testing features.

Specifications at a glance

• Type: QPF2 GFCI Circuit Breaker
• Poles: 1-Pole
• Amperage: 20 A
• Voltage: 120 V
• Interrupting rating: 10,000 AIC
• UL 943 self-test compliant