Siemens QF120 20A 1P 120V Circuit Breaker, GFCI, Plug-On | AmpState

Meet the Siemens QF120 20A 1P 120V GFCI Plug-On Circuit Breaker—built for everyday electrical work and trusted in panelboards, load centers, and electrical-distribution systems. This single-pole GFCI breaker delivers reliable ground-fault protection on standard 120-volt circuits, helping to keep people and spaces safer while keeping your electrical layout tidy and protected.

Why this breaker stands out

• Integrated GFCI protection—ground-fault interruption at the breaker level provides fast protection against shock hazards on the circuit it protects.
• Plug-On installation—designed to snap into compatible Siemens panelboards and load centers, simplifying replacement and reducing installation time.
• Precise, dependable specs—20A, 1-pole, 120V configuration suitable for typical living and working spaces where dedicated protection is required.
• Part-number stability for retrofit—the QF120 is ideal for retrofit work and maintenance planning when keeping the same part number matters for inventory and service records.
• AmpState sourcing and support—available through AmpState, with expert assistance to confirm fit and compatibility for your panel setup.

Who benefits from the QF120

• Electricians tackling retrofit projects that require GFCI protection without changing existing part numbers.
• Maintenance planners who value a consistent, serviceable component for panelboard upgrades and routine inspections.
• Homes, offices, and light commercial spaces where code-compliant GFCI protection on branch circuits is essential.

Practical considerations and use cases

• Install for circuits in kitchens, bathrooms, basements, garages, and outdoor feed lines where GFCI protection is commonly required by code.
• Use in areas that demand quick, reliable replacement with minimal panel disruption during upgrades or repairs.
• When upgrading a panel or performing maintenance, consider the QF120 to maintain consistent part numbers and simplify future servicing.

Specifications at a glance

• Amperage: 20 A
• Poles: 1
• Voltage: 120 V
• Type: GFCI Plug-On Circuit Breaker
• Manufacturer: Siemens
• Part Number: QF120
• Availability: AmpState

Need help confirming compatibility with your panel or matching a part number? Message us and we’ll help you verify fit and ensure a smooth installation process. The Siemens QF120 is a practical, code-ready choice for adding reliable GFCI protection without unnecessary complexity.