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Murray MP390 - Molded Case Circuit Breaker 90A 3P 240V (10kA AIC)

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Murray MP390 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 90A current rating and a 240V AC voltage rating, housed within a compact, plug-in configuration measuring 2.756 inches per side and weighing 0.97 lb. The breaker is UL Listed and employs a thermal-magnetic trip unit for both long-time and instantaneous protection, with an interrupting capacity of 10kA at 240V AC. Its operational temperature range of -25 to 70 °C makes it suitable for a variety of industrial and commercial panelboard applications.

Key Features & Specifications
  • Type: Molded Case Circuit Breaker, MP-T, Thermal Magnetic Protection
  • Voltage Rating: 240V AC
  • Current Rating: 90A
  • Dimensions: 2.756" L x 2.756" W x 2.756" H (70 mm)
  • Standards: UL Listed
  • Applications: Industrial & Commercial Panelboards
  • Switch Type: Circuit Breaker
  • Configuration: Plug-In
  • Temp Rating: -25°C to 70°C (-13°F to 158°F)
  • Phase: 3
  • AIC Rating: 10kA @ 240V AC
  • Connection: Plug-In
  • Poles: 3
  • Protection: Thermal Magnetic
  • Functions: Long Time and Instantaneous Trip
  • Frame Size: MP Series
  • Trip Type: Thermal Magnetic
  • Breaker Type: Molded Case
  • Mounting: Plug-In
  • Certification: UL Listed
  • Circuit Breaker Mounting Style: Plug-In
  • Terminal Connection: Plug-In
  • Phase Connection: 3-Phase
  • Standards: UL
  • Installation Type: Plug-In
  • Weight: 0.97 lb


Product Identification
  • UPC: 040892238709
  • GTIN: 00040892238709