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Murray MP345 - Molded Case 45A 3P 240V Thermal Magnetic

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Murray MP345 is a molded case circuit breaker designed for providing reliable overcurrent and short-circuit protection in three-phase electrical systems. It features a 45A current rating and a 240V AC voltage rating, housed in a compact, plug-in configuration with a thermal-magnetic trip mechanism for combined long-time and instantaneous (LI) protection. The unit is constructed with durable materials, weighs 2.006 lb, and is built to industry standards, ensuring safe interruption of faults up to 10kA at 240V. Typical applications include protection for motors, feeders, and branch circuits in commercial and industrial panelboards.

Key Features & Specifications
  • Type: Molded Case, MP-T, Thermal Magnetic, Plug-In Connection
  • Voltage Rating: 240V AC
  • Current Rating: 45A
  • Poles: 3
  • Phase: 3
  • AIC Rating: 10kA @ 240V
  • Protection Functions: LI (Long-Time and Instantaneous)
  • Family: MP Series
  • Weight: 2.006 lb
  • Country of Origin: Mexico


Product Identification
  • UPC: 040892003741
  • GTIN: 00040892003741