Siemens Q120DFCSA - 20 A, 120 V, 1-Pole Plug-In Circuit Breaker | AmpState

Meet the Siemens Q120DFCSA — a compact, reliable 1-pole plug-in molded case circuit breaker designed to safeguard electrical circuits with precision. Rated at 20A and 120V, this device is purpose-built for fast installation, dependable protection, and easy integration into existing Siemens panelboards and load centers. Available from AmpState, the Q120DFCSA combines proven Siemens engineering with practical, everyday usability for residential, commercial, and light industrial applications.

• Fast plug-in connection for quick installation and effortless replacement in panelboards and load centers, minimizing downtime during upgrades or maintenance.
• Thermal-magnetic trip unit delivers stable, repeatable protection by responding to both overloads and short circuits, helping prevent damage to conductors and connected loads.
• 1-pole, 20A, 120V configuration is ideal for protecting a single branch circuit such as lighting runs, outlets, or a dedicated appliance without unnecessary complexity.
• Compatibility with matching OEM load centers and panelboards ensures a precise fit, compliance with installation standards, and reliable electrical performance.
• Versatile for multiple environments suited for residential homes, commercial spaces, and light industrial settings where robust overcurrent protection is essential.

Why choose the Siemens Q120DFCSA?

This plug-in molded case circuit breaker is designed to simplify field service and reduce installation time without sacrificing protection. The combination of a fast plug-in connection and a thermal-magnetic trip unit means you get quick, confident exchanges and consistent response to faults, preserving the integrity of your panels and downstream equipment.

Technical details at a glance

• Manufacturer: Siemens
• Part Number: Q120DFCSA
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 120V
• Number of Poles: 1
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and practical applications

• Residential electrical panels protecting lighting circuits, kitchen island outlets, or dedicated appliance circuits.
• Commercial spaces safeguarding small office lighting, receptacle banks, or zone-specific circuits in panelboards.
• Light industrial environments where compact, reliable protection is required for individual branch circuits.

Whether you’re upgrading an older panel, performing a retrofit, or maintaining critical electrical infrastructure, the Siemens Q120DFCSA delivers predictable trips, easy maintenance, and compatibility that aligns with Siemens load centers and panelboards. Choose this 20A, 120V, 1-pole plug-in breaker for precise protection, straightforward installation, and long-term reliability in your electrical system.