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Square D SDSA Type 1 Surge Protective Devices

Square D SDSA Type 1 Surge Protective Devices (SPDs) minimize the damaging effects of surge events. The devices provide surge suppression on 120VAC and 120VAC/240VAC systems. SDSA15 three-wire SPDs serve 120VAC/240VAC systems, while the two-wire SDSA05 is available for 120VAC systems. Designers can install two SDSA15 units to provide suppression on 208Y/120VAC three-phase, four-wire systems. Square D SDSA Type 1 SPDs are rated for 36kA single-surge impulse and for indoor or outdoor uses.

Features

  • Voltage rating
    • 120VAC/240VAC (SDSA15)
    • 120VAC (SDSA05)
  • 150V maximum continuous operating voltage
  • 100kA short-circuit current rating
  • 36kA surge current
  • 10kA nominal discharge current
  • Wiring configuration
    • Three-wire (SDSA15)
    • Two-wire (SDSA05)
  • Single phase
  • 14AWG wire leads for easy installation
  • Local signaling status green LED, normal operation
  • NEMA 4X enclosure rating
  • 609.6mm cable length
  • 57.15mm height and width
  • Depth
    • 68.6mm (SDSA15)
    • 49.15mm (SDSA05)

Applications

  • Industrial automation and control
  • Commercial building protection
  • Residential electrical systems
  • OEM equipment
  • Weather-exposed panels
  • Control cabinets

Additional Resources

Dimensions

Mechanical Drawing - Square D SDSA Type 1 Surge Protective Devices
Published: 2026-09-18 | Updated: 2026-10-01