Square D Digest 179
Table of Contents Section3 Safety Switches
EZ Selector - Selection Assistance
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3-2 3-2 3-3 3-4 3-4 3-5 3-5 3-6 3-6 3-6 3-7 3-8 3-8 3-8 3-8 3-8 3-9 3-9
Safety Switches EZ Selector - Selection Assistance
Steps to select a safety switch
Wiring Diagrams Enclosure Options
Class H, R, J, and L Fuse Provisions
Light Duty Safety Switches
Light Duty
Light Duty—Visible Blades 10 kA Short Circuit Current Rating
General Duty Safety Switches
General Duty—Up to 100 kA Short Circuit Current Rating 240 Volt – Single Throw Fusible Switches 240 Volt—Single Throw Non-Fusible Switches
Accessories and Lug Data
Field-Installed Fuse Puller Kits Field-Installed Electrical Interlock Kits Equipment Grounding Kits Field-Installed Lug Kit 400–600 A
Terminal Lug Data
Dimensions for General Duty Safety Switches
Heavy Duty Safety Switches
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3 SAFETY SWITCHES
General Duty
3-10 3-11 3-12 3-13 3-14 3-16 3-22
240 Volt—Single Throw Fusible Switches 600 Volt—Single Throw Fusible Switches 600 Volt—Single Throw Non-Fusible Switches
UL Listed Maximum Short Circuit Current Ratings—AC only
Special Applications
Accessories and Special Features Dimensions for Heavy Duty Safety Switches
Dimensions for NEMA Type 1 and 3R Safety Switches 3-22 Dimensions for NEMA Type 4, 4X, 5, 7, 9, and 12 Safety Switches 3-24
Double Throw Safety Switches
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3-25 3-26 3-27 3-28 3-30 3-30 3-31 3-31 3-32
Fusible and Non-Fusible Overview 240 Volt — Double Throw Safety Switches 600 Volt — Double Throw Safety Switches
Accessories and Lug Data
Terminal Lug Data Application Data
HeavyDuty
Dimensions for Double Throw Safety Switches
Dimensions for DT/DTU (Series F) Safety Switches 30–100 A Dimensions for DTU (Series A E T4) Safety Switches 200–600 A
Stainless Steel Heavy Duty
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