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Murray MP140 - Molded Case 40A 1-Pole (10kA AIC, 120V)

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Murray MP140 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in residential and light commercial electrical systems. It features a 40A current rating and a 120V AC voltage rating, housed in a compact, plug-in configuration measuring 2.756 x 0.787 x 2.756 inches and weighing 0.265 lb. The breaker utilizes a thermal-magnetic trip mechanism for both long-time and instantaneous (LI) protection, offers a 10kA interrupting capacity at 120V, and operates within a temperature range of -25 to 70 °C. It is engineered for compliance with relevant industry standards for safety and performance in single-phase applications.

Key Features & Specifications
  • Type: Molded Case, MP-T, Thermal Magnetic Protection with LI (Long-time & Instantaneous) Trip
  • Voltage Rating: 120V AC
  • Current Rating: 40A
  • Dimensions: 2.756" H x 0.787" W x 2.756" D (70 mm x 20 mm x 70 mm)
  • Standards: Complies with industry safety and performance standards for circuit breakers
  • Applications: Residential and light commercial load centers, branch circuit protection
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Phase: 1
  • AIC Rating: 10kA @ 120V
  • Connection: Plug-In
  • Poles: 1
  • Protection: Thermal Magnetic
  • Functions: LI - Long-Time and Instantaneous Trip
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Weight: 0.265 lb
  • Family: MP Series
  • Country of Origin: Mexico


Product Identification
  • UPC: 040892518924
  • GTIN: 00040892518924