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Type HWA


Square D™ brand Surgelogic™ HWA surge protective devices are compact, nipple-mounted parallel-connected surge suppressors that come in a variety of voltage configurations, including Delta. HWA devices can be used in a network of surge suppression applications or as a stand-alone surge suppressor.

Schneider Eletric Square D Picture
Type HWA
  • Features



    • NEMA 4X Rated
    • High-energy suppression circuit that provides 10 modes of suppression from 50,000 to 100,000 peak Amps of surge current rating per phase
    • Each MOV is individually fused and incorporates patented overvoltage technology innovations that provide superior overvoltage withstand capability for systems with unstable power, without compromising transient clamping performance
    • EMI/RFI Noise Rejection can increase transient suppression
    • Equipped with LED Status Indication, which allows visual indication of the suppressor's status
    • Suppression Status Alarm allows multiple methods of alarm notification
    • Coordinated Fuse Technology allows disconnection methods for thermal and high-current events.
    • HWA SPDs mount directly to the panel through a nippled connection. They allow easy mounting near the circuit breaker in order to reduce lead lengths and improve surge suppression
    • Optional Remote Monitor and Flush mount Kit available


    • Suitable for installing indoors, outdoors, or in other harsh environments
    • Provides surge suppression to vulnerable equipment powered from weather-exposed panels
    • Longer product life and increased tolerance to unstable power conditions
    • Improves surge suppression to the equipment
    • Provides immediate response if suppressor is damaged
    • Provides immediate notification through audible and visual indication if reduced suppression occurs
    • Provides premium surge suppression while managing both thermal and overcurrent end-of-life events


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