Siemens Q120DFWG 20A 1P Circuit Breaker, AFCI, GFCI, Dual-Function | AmpState

The Siemens Q120DFWG is a 1-pole, 20A circuit breaker that combines AFCI and GFCI protection in a single, compact device. Designed for panelboards, load centers, and electrical distribution, this dual-function breaker delivers two safety protections in one reliable package, helping you simplify installations and code-compliant wiring projects.

Key features at a glance include a 20-ampere, 1-pole configuration with AFCI (arc-fault circuit interrupter) and GFCI (ground-fault circuit interrupter) functionality. This means you get arc-fault protection to detect dangerous arcing and ground-fault protection to prevent shock hazards, all in one device. The Q120DFWG is a smart choice for maintenance teams, panel builders, and spare inventory where a direct part-number match matters.

Why this dual-function breaker stands out

• Dual-function protection combines AFCI and GFCI in a single, space-saving device, reducing the need for separate components and simplifying panel labeling.
• Direct part-number match ensures straightforward fitment in existing Siemens installations and minimizes compatibility questions during replacements or upgrades.
• Reliable Siemens build designed for consistent performance in electrical distribution environments, with a straightforward replacement process for panelboards and load centers.
• Ideal for inventory and projects—a dependable, ready-to-go solution for contractors, facility managers, and distributors who value exact part numbers and quick turnaround.

Who it's for

• Maintenance teams maintaining residential and light commercial panels who need a dependable, on-the-shelf AFCI/GFCI solution.
• Panel builders stocking spare parts to ensure fast, accurate replacements on site.
• Electricians tackling new installations or remodels that require both arc-fault and ground-fault protection in a single device.

Use cases and practical benefits

Use the Siemens Q120DFWG in circuits where 20A protection is appropriate and both AFCI and GFCI safeguards are required. In living spaces, kitchens, bathrooms, garages, or other areas subject to electrical code requirements, a dual-function breaker helps streamline compliance while reducing panel complexity. Its one-device approach can shorten installation time and simplify panel labeling compared with using separate AFCI and GFCI breakers.

Compatibility and availability

Part Number: Q120DFWG. Manufacturer: Siemens. Amperage: 20 A. Poles: 1. This unit is available from AmpState, with support to confirm fit and compatibility. If you’re unsure about whether this exact part will match your panel, message us and we’ll help verify the fit and guide you toward a precise, reliable replacement.

Ready to upgrade or stock for future projects? The Siemens Q120DFWG offers dual-function protection, convenient compatibility, and dependable performance—delivered by AmpState to keep your electrical distribution running safely and efficiently.