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. 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
  • UL Listed, File E2875
  • 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
Related Documents & Downloads

Square D logo

Applications

  • Mining and Mineral
  • Commercial Buildings
  • Manufacturing
  • Industrial Buildings
  • Water Wastewater
  • Healthcare Facilities
  • Educational Campuses

For a complete listing of documentation for this product, please consult the Technical Library.

Brochures
Square D Safety Switches Brochure 3100BR9801
Data Bulletins
Corner-Grounded Delta (Grounded B Phase) Systems 2700DB0202
NEMA Type 4X Safety Switches in Fiberglass-Reinforced Polyester Enclosures 3110PD9601
Digest Sections
Digest Section 3 - Temporary Pages - HD Safety Switches 3110PL0401
drawings
1000 VDC PV SWITCH 100 AMP 3 & 4 POLE PWCCB-SAFSW-0001S
1000 VDC PV SWITCH 200 AMP 3 & 4 POLE PWCCB-SAFSW-0002S
CIRCUIT BREAKER ENCLOSURES - SEISMIC 70-400 AMPERE NEMA/EEMAC TYPE 1 GENERAL PURPOSE ENCLOSURE 3076S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 100 AMPERE - SERIES F5 ENCLOSURE - NEMA TYPE 12, 12K INDUSTRIAL 1904S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 1200 ENCLOSURE - NEMA TYPE 1 GENERAL PURPOSE NEMA TYPE 3R RAINPROOF NEMA TYPE S DUST TIGHT (INDOOR) 1940S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 30 AMPERE ENCLOSURE - NEMA TYPE 3R RAINPROOF 2229S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 30-60 AMPERE - SERIES F5 ENCLOSURE - NEMA TYPE 12 1896S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 100 AMPERE ENCLOSURE - NEMA TYPE 1 GENERAL PURPOSE NEMA TYPE 3R RAINPROOF 1905S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 200 AMPERE SERIES F5 ENCLOSURE - NEMA TYPE 1 GENERAL PURPOSE 3229S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 30 AMPERE ENCLOSURE - NEMA TYPE 1 GENERAL PURPOSE 2228S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 60 AMPERE ENCLOSURE - NEMA TYPE 1 3002S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 60 AMPERE ENCLOSURE - NEMA TYPE 1 GENERAL PURPOSE NEMA TYPE 3R RAINPROOF 1897S
HEAVY DUTY SAFETY SWITCHES - SEISMIC VISIBLE BLADE TYPE 600 AMPERE SERIES E5 ENCLOSURE - NEMA TYPE TYPE 3R RAINPROOF (SUFFIX R) 3454S
Heavy Duty Safety Switches Enclosed Molded Case Switch For Hazardous Locations 225 Ampere Enclosure - Class I, Division 1 or 2, Groups C and/or D Class II, Division 1 or 2, Groups E, F, and/or G Class III, Division 1 or 2 1919
HEAVY DUTY SAFETY SWITCHES ENCLOSED MOLDED CASE SWITCH FOR HAZARDOUS LOCATIONS/225 AMPERE/ENCLOSURE-CLASS1, DIV 1 OR 2, GROUPS C AND OR D/ CLASS II, DIV 1 OR 2, GROUPS E, F AND OR G / CLASS III, DIV 1 OR 2 PWCCB-SW-0003
HEAVY DUTY SAFETY SWITCHES VISIBLE BALDE TYPE 200 AMPERE ENCLOSURE - NEMA TYPE 3R RAINPROOF SERIES F5 SEISMIC 3262S
HEAVY DUTY SAFETY SWITCHES VISIBLE BALDE TYPE 400 AMPERE SERIES E5 ENCLOSURE - NEMA TYPE 3R RAINPROOF (SUFFIX R) SEISMIC 3455S
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 1 General Purpose 1922
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 1 General Purpose 1923
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 1 General Purpose 1922
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 1 General Purpose 1923
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 1 General Purpose 1924
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 1 General Purpose 1922
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 1 General Purpose 1924
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 12 1920
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 12 NEMA Type 4, 4X, 5 Stainless Steel 1927
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 3R Rainproof (Suffix R) 1925
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 3R Rainproof (Suffix R) 1926
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 3R Rainproof (Suffix R) 1925
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 3R Rainproof (Suffix R) 1926
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 3R Rainproof (Suffix R) 1925
Heavy Duty Safety Switches Visible Blade Type 400 Ampere Enclosure - NEMA Type 3R Rainproof (Suffix R) 1926
Heavy Duty Safety Switches Visible Blade Type 600 Ampere Enclosure - NEMA Type 1 General Purpose 1929
HEAVY DUTY SAFETY SWITCHES VISIBLE BLADE TYPE 600 AMPERE ENCLOSURE - NEMA TYPE 12 NEMA TYPE 4, 4X, 5 STAINLESS STEEL 1932
Heavy Duty Safety Switches Visible Blade Type 600 Ampere Enclosure - NEMA Type 3R Rainproof (Suffix R) 1931
Heavy Duty Safety Switches Visible Blades 100 Ampere Enclosure - Type 1 Fusible 3209
HEAVY DUTY SAFETY SWITCHESVISIBLE BLADE TYPE 600 AMPERE ENCLOSURE - NEMA TYPE 12 NEMA TYPE 4, 4X, 5 STAINLESS STEEL 2148
Handouts
F-Series Stainless Steel Safety Switches Handout 3100HO0001
Improved Lockout Procedures with Lock-Off Guard for Square D Safety Switches 3100HO0602R11/10
Instruction Bulletins
800 and 1200 Ampere Heavy Duty Safety Switches Type AV - Series E3 3110-1
NHUB Series Hubs Made of KRYDON Material 40271-767-02