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Standard 621, Edition 7

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Standard 621, Edition 7 Edition Date: May 07, 2010 DOD Approved: February 25, 1992 ANSI Approved: September 09, 2020 $716.00-$1,567.00

Revisions and Related Documents

Revisions
Red Line Std. (11)

Date      
September 16, 2020 Redline Revision
July 08, 2019 Redline Revision
March 02, 2018 Redline
March 01, 2018 Revision
February 15, 2017 Redline Revision
December 11, 2015 Redline Revision
October 25, 2013 Revision
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CSDS
Proposals (8)

CSDS Proposal   

CSDS Proposals

An electronic document associated with a UL Standard for Safety or Outline of Investigation, and issued by UL to propose:

  • A revision of a single or multiple requirement(s).
  • A complete new edition of an existing Standard or Outline.
  • A new Standard or Outline that has not previously been published.

CSDS Proposals provide access to view the proposal and submit comments within UL's Collaborative Standards Development System (CSDS) appropriately.

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December 29, 2017
December 09, 2016
November 04, 2016
June 26, 2015
May 15, 2015
February 19, 2010
December 11, 2009
October 19, 2009
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UL LLC CRD (0)

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Other Updates (0)

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Referenced Standards (31)

Below is a list of UL Standards referenced in UL 621

StandardEditionTitle
20 14 General-Use Snap Switches
44 19 Thermoset-Insulated Wires and Cables
62 20 Flexible Cords and Cables
83 16 Standard for Thermoplastic-Insulated Wires and Cables
94 7 Tests for Flammability of Plastic Materials for Parts in Devices and Appliances
224 7 Extruded Insulating Tubing
310 9 Standard for Electrical Quick-Connect Terminals
489 13 Molded-Case Circuit Breakers, Molded-Case Switches, and Circuit-Breaker Enclosures
508 18 Industrial Control Equipment
510 10 Polyvinyl Chloride, Polyethylene, and Rubber Insulating Tape
635 3 Insulating Bushings
746C 7 Polymeric Materials - Use in Electrical Equipment Evaluations
758 3 Appliance Wiring Material
817 12 Cord Sets and Power-Supply Cords
917 5 Standard for Clock-Operated Switches
1310 7 Class 2 Power Units
1441 5 Coated Electrical Sleeving
1446 8 Systems of Insulating Materials - General
1998 3 Software in Programmable Components
5085-1 1 Low Voltage Transformers - Part 1: General Requirements
5085-3 1 Low Voltage Transformers - Part 3: Class 2 and Class 3 Transformers
486A-486B 3 Wire Connectors
60730-1 5 Automatic Electrical Controls - Part 1: General Requirements
60947-1 6 Low-Voltage Switchgear and Controlgear - Part 1: General Rules
60950-1 2 Information Technology Equipment - Safety - Part 1: General Requirements
61058-1 5 Switches for Appliances - Part 1: General Requirements
60730-2-6 3 Automatic Electrical Controls - Part 2-6: Particular Requirements for Automatic Electrical Pressure Sensing Controls Including Mechanical Requirements
60730-2-7 3 Automatic Electrical Controls - Part 2-7: Particular Requirements for Timers and Time Switches
60730-2-9 4 Automatic Electrical Controls - Part 2-9: Particular Requirements for Temperature Sensing Controls
60947-5-2 4 Low-Voltage Switchgear and Controlgear - Part 5-2: Control Circuit Devices and Switching Elements - Proximity Switches
61800-5-1 2 Adjustable Speed Electrical Power Drive Systems - Part 5-1: Safety Requirements - Electrical, Thermal and Energy
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Reverse Referenced Standards (0)

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