MP2020 - Duplex 20/20 Circuit Breaker

MP2020 - Duplex 20/20 Circuit Breaker

When you replace a breaker in an existing electrical system, small details can make a big difference in getting the right fit. The Siemens MP2020 is an MH-T duplex circuit breaker with two 20-amp, 1-pole circuits housed in a compact 1-inch-wide assembly. For contractors, maintenance teams, and property owners working with existing or legacy equipment, the key is matching the breaker to the load center's requirements—not simply finding another breaker with a 20-amp rating.

Key Features and Benefits

• Two 20A circuits in one duplex assembly: The MP2020 combines two 20-amp, 1-pole circuits in a single breaker configuration.
• MH-T duplex design: Intended for compatible load centers that call for this specific breaker type and physical arrangement.
• Space-conscious construction: Each pole uses 1/2 inch of width, giving the complete breaker an overall width of 1 inch.
• 120V rating: Designed for electrical applications requiring a 120-volt breaker with the appropriate MP2020 configuration.
• Thermal-magnetic circuit protection: Uses the MH-T thermal-magnetic breaker design for circuit protection within its stated ratings.
• Copper and aluminum conductor support: Accommodates 14–8 AWG copper wire and 12–8 AWG aluminum wire.

Technical Specifications

• Manufacturer: Siemens
  
• Catalog Number / MFN: MP2020
  
• Article Number: US2\:MP2020
  
• Breaker Type: MH-T Duplex
  
• Circuit Configuration: Two 1-Pole Circuits
  
• Amp Rating: 20A / 20A
  
• Voltage Rating: 120V
  
• Interrupting Rating: 10 kA
  
• Number of Poles: 2
  
• Construction: 1/2 in. width per pole
  
• Overall Width: 1 in.
  
• Height: 3 in.
  
• Copper Wire Range: 14–8 AWG
  
• Aluminum Wire Range: 12–8 AWG
  
• Maximum Ambient Operating Temperature: 40°C
  
• Net Weight: 0.375 lb
  
• UPC: 040892281101
  
• Commodity Code: 8536200020
  
• Export Classification: ECCN EAR99 / AL N
  
• Country of Origin: Mexico
  

Material Compliance and Certifications

The Siemens MP2020 circuit breaker is UL Listed and CSA Certified. Manufacturer specifications also identify the breaker as SWD and HACR Rated, providing useful certification information when verifying it for a particular installation.

Where It Works Best

The Siemens MP2020 20/20A duplex circuit breaker is intended for compatible residential load center applications where its MH-T duplex design, 120V rating, two 20A circuits, 10 kA interrupting rating, and physical configuration match the equipment requirements. It is especially relevant when maintaining existing or legacy electrical systems designed around this breaker configuration.