Siemens QF120AWG 120A 1-Pole 120 V Circuit Breaker Potential Transformer

Meet the Siemens QF120AWG—a genuine 120 A, 1-pole, 120 V circuit breaker engineered for reliable single-phase protection in Siemens panels. This is a purpose-built replacement part that ensures your panel trips accurately when overloads or faults occur, safeguarding wiring, devices, and downstream circuits.

• Precise protection with a 120 A current rating, ideal for branch circuits and feeders in residential or light commercial installations.
• Simple, reliable single-pole design optimized for 120 V electrical systems and straightforward replacement in compatible panels.
• Siemens QF family compatibility designed to drop into matching panels with consistent trip characteristics and electrical performance.
• Durable, fast-acting mechanism to interrupt current quickly during overloads or short circuits, helping prevent damage and nuisance outages.
• Genuine part number QF120AWG for accurate fit, labeling, and long‑term availability in stock and service scenarios.

Why this matters: a correctly matched circuit breaker isn’t just about stopping a fault—it’s about predictable protection. The QF120AWG preserves panel integrity, minimizes downtime, and provides electricians with a dependable, standard component that aligns with Siemens’ design philosophy and installation practices.

Ideal use cases include replacing a failed 120 V, 1-pole breaker in residential service panels or small commercial panels, protecting commonly wired circuits such as lighting, receptacles, or other 120 V loads. It’s also a solid choice when upgrading or stocking for service calls to ensure you have the right Siemens-compatible part on hand for quick, accurate replacements.

Practical tips for best results:

• Verify panel compatibility with QF-series breakers before installation.
• Ensure the panel is de-energized and follow proper lockout/tagout procedures.
• Respect manufacturer torque specifications on mounting terminals to maintain a secure, lasting connection.

Specifications at a glance:

• Current rating: 120 A
• Poles: 1
• Voltage rating: 120 V
• Product family: Siemens QF
• Part Number: QF120AWG

Choose the Siemens QF120AWG for authentic, panel-ready protection that aligns with your 120 V, single-phase electrical system. With its solid construction, dependable trip behavior, and seamless integration into Siemens panels, it’s a practical, trusted choice for maintenance, repair, and reliability-minded installations.