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Square D SSP04EMA32 - Surge Suppressor 320kA (480Y/277 VAC)

Square D
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Square D SSP04EMA32 is a surge protection device from the Schneider Electric SURGELOGIC family designed for safeguarding motor control and panel applications against transient overvoltages. This unit operates at 480Y/277 VAC for 3-phase, 4-wire systems with a maximum surge current rating of 320kA and a nominal discharge current of 20kA, housed in a NEMA 1 steel enclosure with an integrated disconnect switch and enhanced filtering for surface mounting. The device measures 21.6 inches (549 mm) in height, 9.9 inches (251 mm) in width, and 7.9 inches (200 mm) in depth, weighing 31.061 lb, and accepts wire sizes from AWG 10 to AWG 2 copper within an operating temperature range of -13 to 158 °F (-25 to 70 °C). It complies with UL 1449 Type 2 SPD standards, NEC Article 285, and CSA certifications, and includes audible, visual, and remote signaling capabilities for status monitoring. Typical industrial applications include motor control centers, distribution panels, and heavy machinery requiring robust surge suppression in harsh environments.

Key Features & Specifications
  • Type: Surge Protection/Suppressor
  • Surge Current Rating: 320kA
  • Voltage Rating: 480Y/277 VAC
  • Phases: 3-Phase, 4-Wire
  • Enclosure: NEMA 1
  • Mounting Type: Surface Mount
  • Disconnect Switch: Included
  • Series: Surgelogic EMA
  • Certifications: UL 1449 Type 2, NEC Article 285, CSA
  • Nominal Discharge Current: 20kA
  • Audible, Visual, and Remote Signaling
  • Material: Steel
  • Dimensions: 21.6 in (549 mm) x 9.9 in (251 mm) x 7.9 in (200 mm) (Height x Width x Depth)
  • Weight: 31.061 lb
  • Wire Size: AWG 10 to AWG 2 Copper
  • Temp Rating: -13–158 °F (-25–70 °C)


Product Identification
  • UPC: 785901995425