Siemens QF120AH 20A 1P 120V Circuit Breaker, GFCI, Plug-On | AmpState

The Siemens QF120AH 20A 1P 120V GFCI Plug-On Circuit Breaker from AmpState is designed to safeguard your electrical distribution with reliable, panel-level ground-fault protection. This 1-pole, 120-volt breaker fits directly into compatible Siemens panelboards and load centers, delivering quick, secure protection right at the source of power.

Key advantages of the QF120AH include:

• GFCI protection at the breaker level—provides ground-fault protection for the entire circuit, reducing the risk of shock for connected loads and receptacles.
• Plug-On installation—streamlines replacement and upgrades in compatible Siemens panels, minimizing wiring complexity and downtime.
• Compact 1-pole, 20 A design—ideal for branch circuits that require reliable protection without adding bulk to the panel.
• 120V operation—works with standard residential and commercial electrical systems that run at 120 volts.
• Direct part-number match for trusted sourcing—a smart choice for maintenance teams, panel builders, and spare inventory where exact part match matters.
• Manufactured by Siemens—reliably designed and tested to align with Siemens' electrical distribution ecosystem.

Why choose the Siemens QF120AH

Unlike relying on a separate GFCI outlet for protection, the QF120AH protects the entire circuit at the breaker level, covering all downstream outlets and devices on that branch. This is especially valuable in spaces where multiple outlets or devices are on a single circuit and consistent protection is essential. Its plug-on design reduces installation time and helps ensure a secure, code-compliant connection within compatible panel systems.

Ideal applications and use cases

• Panelboards and load centers that require built-in GFCI protection for branch circuits
• Electrical distribution setups where quick replacement with a direct part match is important
• Maintenance or spare inventory programs for technicians managing Siemens panels
• Residential or light-commercial installations that demand reliable ground-fault protection at the source

Compatibility and notes

Designed for use in compatible Siemens panelboards and load centers as a plug-on replacement. For exact fit and compatibility, AmpState supports you—if you need help matching a part number or confirming compatibility, reach out and we’ll help verify fit.

Specifications at a glance

• Manufacturer: Siemens
• Part Number: QF120AH
• Type: GFCI Plug-On Circuit Breaker
• Amperage: 20 A
• Poles: 1
• Voltage: 120 V
• Applications: Panelboards, Load Centers, Electrical Distribution
• Availability: AmpState

Ready to upgrade or stock up? The Siemens QF120AH from AmpState delivers dependable GFCI protection with straightforward installation, backed by the assurance of direct-part compatibility. If you have a specific panel setup or need confirmation on fit, our team is ready to assist with fast, expert guidance.