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Standard 20, Edition 14

General-Use Snap Switches

UL Standard
Standard 20, Edition 14 Edition Date: July 20, 2018 DOD Approved: December 04, 1981 ANSI Approved: January 26, 2021 $505.00-$1,258.00

Revisions and Related Documents

Revisions
Red Line Std. (2)

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January 26, 2021 Redline Revision
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April 17, 2020
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UL LLC - Certification Requirement Decision    Learn more about CRDs
June 17, 2020
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Referenced Standards (18)

Reverse Referenced Standards (122)

UL 20 is referenced in the following list of UL Standards

StandardEditionTitle
5 15 Surface Metal Raceways and Fittings
5A 4 Nonmetallic Surface Raceways and Fittings
5B 2 Standard for Strut-Type Channel Raceways and Fittings
22 6 Standard for Amusement and Gaming Machines
111 7 Outline of Investigation for Multioutlet Assemblies
130 13 Standard for Electric Heating Pads
183 4 Manufactured Wiring Systems
217 9 Smoke Alarms
234 5 Standard for Low Voltage Lighting Fixtures for Use in Recreational Vehicles
268A 4 Smoke Detectors for Duct Application
268C 1 Outline of Investigation for Multi-Detector Test Apparatus
291 6 Automated Teller Systems
295 2 Standard for Commercial-Industrial Gas Burners
296A 3 Standard for Waste Oil-Burning Air-Heating Appliances
307A 9 Standard for Liquid Fuel-Burning Heating Appliances for Manufactured Homes and Recreational Vehicles
307B 5 Standard for Gas-Burning Heating Appliances For Manufactured Homes and Recreational Vehicles
353 5 Standard for Limit Controls
355 10 Cord Reels
365 5 Standard for Police Station Connected Burglar Alarm Units and Systems
391 5 Standard for Solid-Fuel and Combination-Fuel Central and Supplementary Furnaces
399 8 Drinking Water Coolers
412 5 Standard for Refrigeration Unit Coolers
416 4 Standard for Refrigerated Medical Equipment
427 5 Standard for Refrigerating Units
462 3 Standard for Heat Reclaimers for Gas-, Oil-, or Solid Fuel-Fired Appliances
464 10 Audible Signaling Devices for Fire Alarm and Signaling Systems, Including Accessories
464A 1 Audible Signal Appliances for General Signaling Use
466 8 Standard for Electric Scales
469 4 Standard for Musical Instruments and Accessories
471 10 Standard for Commercial Refrigerators and Freezers
484 9 Standard for Room Air Conditioners
498C 1 Flatiron and Appliance Plugs
498D 1 Attachment Plugs, Cord Connectors and Receptacles with Arcuate (Locking Type) Contacts
498F 1 Plugs, Socket-Outlets and Couplers with Arcuate (Locking Type) Contacts
506 14 Standard for Specialty Transformers
521 7 Heat Detectors for Fire Protective Signaling Systems
541 9 Refrigerated Vending Machines
551 8 Standard for Transformer-Type Arc-Welding Machines
603 5 Standard for Power Supplies for Use with Burglar-Alarm Systems
609 12 Standard for Local Burglar Alarm Units and Systems
621 7 Ice Cream Makers
634 9 Standard for Connectors and Switches for Use with Burglar-Alarm Systems
636 11 Standard for Holdup Alarm Units and Systems
639 8 Standard for Intrusion-Detection Units
680 8 Standard for Emergency Vault Ventilators and Vault-Ventilating Ports
710C 3 Outline of Investigation for Ultraviolet Radiation Systems for Use in the Ventilation Control of Commercial Cooking Operations
726 7 Standard for Oil-Fired Boiler Assemblies
727 10 Standard for Oil-Fired Central Furnaces
729 6 Standard for Oil-Fired Floor Furnaces
730 5 Standard for Oil-Fired Wall Furnaces
732 6 Standard for Oil-Fired Storage Tank Water Heaters
733 5 Standard for Oil-Fired Air Heaters and Oil-Fired Direct-Fired Heaters
746C 7 Polymeric Materials - Use in Electrical Equipment Evaluations
756 8 Standard for Coin and Currency Changers and Actuators
771 9 Night Depositories
775 3 Standard for Graphic Arts Equipment
795 8 Commercial-Industrial Gas Heating Equipment
813 7 Standard for Commercial Audio Equipment
817 12 Cord Sets and Power-Supply Cords
834 5 Standard for Heating, Water Supply, and Power Boilers - Electric
873 12 Standard for Temperature-Indicating and -Regulating Equipment
907 4 Standard for Fireplace Accessories
913 8 Standard for Intrinsically Safe Apparatus and Associated Apparatus for Use in Class I, II, and III, Division 1, Hazardous (Classified) Locations
921 8 Standard for Commercial Dishwashers
935 10 Standard for Fluorescent-Lamp Ballasts
961 5 Standard for Electric Hobby and Sports Equipment
963 4 Standard for Sealing, Wrapping, and Marking Equipment
964 12 Electrically Heated Bedding
987 8 Standard for Stationary and Fixed Electric Tools
1017 10 Vacuum Cleaners, Blower Cleaners, and Household Floor Finishing Machines
1023 7 Household Burglar-Alarm System Units
1042 5 Electric Baseboard Heating Equipment
1047 6 Standard for Isolated Power Systems Equipment
1083 6 Household Electric Skillets and Frying-Type Appliances
1086 6 Standard for Household Trash Compactors
1090 7 Standard for Electric Snow Movers
1149 2 Standard for Low Voltage Marine Lighting Fixtures
1203 5 ExplosionProof and Dust-IgnitionProof Electrical Equipment for Use in Hazardous (Classified) Locations
1323 4 Scaffold Hoists
1340 3 Hoists
1363 5 Standard for Relocatable Power Taps
1447 6 Standard for Electric Lawn Mowers
1449 5 Surge Protective Devices
1453 6 Standard for Electric Booster and Commercial Storage Tank Water Heaters
1479 4 Fire Tests of Penetration Firestops
1480 6 Speakers for Fire Alarm and Signaling Systems, Including Accessories
1480A 1 Speakers for Commercial and Professional Use
1559 5 Standard for Insect-Control Equipment - Electrocution Type
1567 5 Standard for Receptacles and Switches Intended for Use with Aluminum Wire
1573 4 Standard for Stage and Studio Luminaires and Connector Strips
1574 3 Track Lighting Systems
1598A 1 Supplemental Requirements for Luminaires for Installation on Marine Vessels
1598C 1 Standard for Light-Emitting Diode (LED) Retrofit Luminaire Conversion Kits
1610 4 Central-Station Burglar-Alarm Units
1681 4 Standard for Wiring Device Configurations
1778 5 Uninterruptible Power Systems
1795 5 Standard for Hydromassage Bathtubs
1889 1 Standard for Commercial Filters for Cooking Oil
1917 4 Standard for Solid-State Fan Speed Controls
1951 2 Electric Plumbing Accessories
1963 4 Refrigerant Recovery/Recycling Equipment
1971 3 Standard for Signaling Devices for the Hearing Impaired
1995 5 Heating and Cooling Equipment
2006 5 Standard for Halon 1211 Recovery/Recharge Equipment
2021 4 Fixed and Location-Dedicated Electric Room Heaters
2096 3 Standard for Commercial/Industrial Gas and/or Oil-Burning Assemblies With Emission Reduction Equipment
2106 2 Standard for Field Erected Boiler Assemblies
2157 4 Electric Clothes Washing Machines and Extractors
2158 6 Electric Clothes Dryers
2200 3 ANSI/CAN/UL/ULC Stationary Engine Generator Assemblies
2200 3 Stationary Engine Generator Assemblies
2202 2 Standard for Electric Vehicle (EV) Charging System Equipment
2344 2 Standard for Material Lifts
2572 2 Standard for Mass Notification Systems
2753 2 Outline of Investigation for Battery Operated Ride-On Lawn Mowers
3703 1 Standard for Solar Trackers
745-1 2 Portable Electric Tools
60079-0 7 Standard for Explosive Atmospheres - Part 0: Equipment - General Requirements
60335-1 6 Safety of Household and Similar Appliances, Part 1: General Requirements
60950-1 2 Information Technology Equipment - Safety - Part 1: General Requirements
61010-1 3 Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use - Part 1: General Requirements
61010a-1 3 Standard for Electrical Equipment for Laboratory Use; Part 1: General Requirements
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