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Square D MA4IMA24H - Surge Protector 480Y/277V 240kA

Square D
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The Square D MA4IMA24H is a Type MA surge protection device from the SURGELOGIC family, designed to safeguard electrical systems from transient overvoltages. It is rated for 480Y/277 VAC, 3-phase operation, with a maximum surge current rating of 240,000 A. This unit measures 6.3 in (158.8 mm) x 3.3 in (82.8 mm) x 2.7 in (68.3 mm) and weighs 2.441 lb, featuring a compact construction compatible with QO frames. It complies with UL 1449 ed. 4, UL 1283 ed. 5, CSA C22.2 No 8:1986, ANSI/IEEE C62.41, ANSI/IEEE C62.45, and NEC 285 standards, with an operating temperature range of -13 to 158 °F (-25 to 70 °C). This device is suitable for industrial applications requiring robust surge suppression in panelboard or load center installations.

Key Features & Specifications
  • Type: MA surge protection device
  • Voltage Rating: 480Y/277 VAC
  • Current Rating: 240,000 A
  • Dimensions: 6.3 in (158.8 mm) x 3.3 in (82.8 mm) x 2.7 in (68.3 mm) (Height x Width x Depth)
  • Weight: 2.441 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 surge suppression for panelboards and load centers
  • Phase: 3
  • Temp Rating: -13 to 158 °F (-25 to 70 °C)
  • Compatible Frames: QO
  • Family: SURGELOGIC
  • Country of Origin: United States


Product Identification
  • UPC: 785901933434
  • GTIN: 00785901933434