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Square D MA4IMA24 - Surge Protective Device 480Y/277V 240kA

Square D
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Square D MA4IMA24 is a Surge Protective Device (SPD) designed for three-phase electrical systems to protect sensitive equipment from transient voltage surges. It is rated for 480Y/277V AC systems with a 240kA surge current rating and features a compact, terminal-connected design measuring 158.8 mm H x 82.8 mm W x 68.3 mm D and weighing 2 lb. The device complies with key industry standards including UL 1449 (ed. 4), CSA C22.2 No. 8, and NEC Article 285, and operates reliably within a temperature range of -25 to 70 °C. It is engineered for integration into compatible QO load centers for industrial and commercial power distribution applications.

Key Features & Specifications
  • Type: MA Series Surge Protective Device (SPD), SurgeLogic Family
  • Voltage Rating: 480Y/277V AC
  • Current Rating: 240kA Surge Current
  • Dimensions: 158.8 mm H x 82.8 mm W x 68.3 mm D (6.3 in x 3.3 in x 2.7 in)
  • Weight: 2 lb
  • Standards: UL 1449:ed. 4, UL 1283:ed. 5, CSA C22.2 No 8:1986, ANSI/IEEE C62.41, ANSI/IEEE C62.45, NEC 285
  • Applications: Industrial and commercial surge protection for three-phase power systems
  • Connection: Terminal
  • Phase: 3
  • Temp Rating: -25 to 70 °C (-13 to 158 °F)
  • Compatible Frames: QO
  • Certification: UL 1449:ed. 4, UL 1283:ed. 5, CSA C22.2 No 8:1986, ANSI/IEEE C62.41, ANSI/IEEE C62.45, NEC 285
  • Country of Origin: Mexico


Product Identification
  • UPC: 785901292999
  • GTIN: 00785901292999