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Type SDSA 3-Phase

SDSA2040, 4040 & 3650 SPDs

Square D™ brand Surgelogic™ SDSA 3-Phase products are compact and affordable Surge Protective Devices (SPDs) available in Wye and Delta configurations. SDSA 3-Phase SPDs offer a simple means to bring down initial surges to manageable levels and can offer additional value in a cascaded SPD system. Their compact design allows surge suppression to be installed adjacent to power panels or directly on sensitive equipment.

Schneider Eletric Square D Picture
Type SDSA 3-Phase
  • Features

    • Type 1 rated devices provide the flexibility to be used with or without an Overcurrent Protection Device (OCPD)
    • LEDs indicate operational status
    • Short circuit current rating 200kA
    • Suitable for indoor and outdoor application (NEMA Type 4X rated)
    • Convenient back-nipple mounting
    • Field-proven MOV design provides response time less  than 50 nanoseconds and provides lower clamping voltage than traditional gas tube arresters
    • Coordinated Fuse Technology


    • Provide surge suppression to vulnerable equipment powered from weather exposed panels
    • Transient suppression is located at the most efficient connection point
    • Allows for flexibility in installation locations
    • Allows immediate indication if suppressor requires replacement
    • Provide premium surge suppression while managing thermal effects from MOV end of life


    • OEM
    • Low Voltage Products & Systems
    • Building Automation & Control
    • Industrial Automation & Control
    • Critical Power, Cooling & Racks