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Heavy Duty Safety Switches

Designed for commercial and industrial applications where maximum performance and continuity of service is vital.

Square D® heavy duty safety switches are designed for commercial and industrial applications where maximum performance and continuity of service is vital.

Schneider Eletric
Heavy Duty Safety Switches
  • Features

    Like our general duty switches, they too can provide over-current and short circuit protection when equipped with fuses. When equipped with either a factory-installed solid neutral assembly or a field-installed equipment grounding kit (some exceptions apply), the switches are also suitable for use as service equipment. Heavy duty safety switches feature:
    • Fusible and Non-Fusible
    • 240 Vac or 600 Vac maximum
    • 30–1200 A
    • Up to 200 kA SCCR, utilizing appropriately rated Class R fuses and Class R fuse kits or Class L and Class J fuses
    • Horsepower rated for motor applications
    • Enclosures available: stainless steel NEMA Types 3, 3R, 4, 4X, 5 or 12; NEMA Type 4X fiberglass, cast aluminum, or KRYDON; NEMA Types 7 and 9
    • CSA Certified.
    • Meets or exceeds NEMA KS1
    • Visible blade switches for positive "OFF" indication
    • Quick-make, quick-break operating mechanisms
    • Dual cover interlock
    • Color coded "ON" - "OFF" indicator handle
    • Cover padlock hasp and handle lock-off provision for multiple padlocks
    • Spring reinforced plated copper fuse clips
    • Tangential combination knockouts
    • Insulated, bonded solid neutral assemblies
    • Wire terminations suitable for aluminum or copper conductors


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