MP120 - 20 Amp Circuit Breaker

MP120 - 20 Amp Circuit Breaker

The Siemens MP120 is a dependable circuit breaker engineered to deliver reliable residential circuit protection. As a miniature thermal magnetic breaker from the trusted Siemens QP/MP lineup, the MP120 is built to give you precise control over electrical flow in your home’s load center mains and feeders. Its compact, single‑pole form lets you install it quickly and neatly — ideal whether you’re wiring a new panel or upgrading an existing setup. The MP120 is designed to handle demanding conditions while keeping electrical systems safe, giving you peace of mind that your home’s wiring is in good hands.

Key Features and Benefits

• Thermal‑magnetic trip technology: Offers responsive protection against overloads and short circuits for safe, worry‑free performance.
• Space‑saving single‑pole layout: Perfect for load center mains and feeders in typical residential panels — compact and easy to fit even in tight breaker bays.
• High interrupt capacity (10 kA): Capable of interrupting substantial fault currents, enabling the breaker to act quickly when you need it most.
• Lightweight and easy to handle: At just 0.265 lbs, the MP120 is simple to carry and position during installation.
• Consistent performance at typical operating temperatures: Designed for reliable operation up to 40 °C, ensuring durable function under standard conditions.

Technical Specifications

• Product Type: MP-T Miniature Thermal Magnetic Circuit Breaker
  
• Voltage Rating: 120 V
  
• Amperage Rating: 20 A
  
• Interrupt Rating: 10 kA
  
• Number of Poles: 1 (single‑pole)
  
• Operating Temperature: 40 °C
  
• Net Weight: 0.265 lbs
  
• Dimensions:
  • Length: 3.15 inches
  • Width: 12.598 inches
  • Depth: 3.543 inches

Material Compliance and Certifications

• UL Listed and HACR Rated: The Siemens MP120 is UL Listed and HACR Rated, meaning it fulfils rigorous safety and quality standards for residential electrical equipment. Manufactured under strict quality control, this breaker is built with durable components designed to provide long-term service life within your home’s electrical system.

Where It Works Best

• This 20-amp circuit breaker shines in residential settings — especially where you need reliable protection for branch circuits, feeder lines, or load center mains. It’s an excellent choice for new home wiring, panel upgrades, or replacing outdated breakers to enhance safety. For homeowners, electricians, or contractors seeking a dependable, easy-to-install solution for everyday electrical protection, the MP120 delivers reliable performance and peace of mind.