NEMA ICS 2-1996, Part 8 (R2004, R2009)
Superseded
A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.
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INDUSTRIAL CONTROL AND SYSTEMS CONTROLLERS, CONTACTORS, AND OVERLOAD RELAYS RATED NOT MORE THAN 2000 VOLTS AC OR 750 VOLTS DC- PART 8: DISCONNECT DEVICES FOR USE IN INDUSTRIAL CONTROL EQUIPMENT
01-05-2015
06-12-2012
1 GENERAL
1.1 Scope
1.2 Application Basis
1.3 Normative References
2 DEFINITIONS
3 CLASSIFICATIONS
4 CHARACTERISTICS AND RATINGS
4.1 Circuit Breaker Ratings
4.2 Molded-Case Switch Ratings
4.3 Motor-Circuit Switch Ratings
4.3.1 Horsepower Ratings
4.3.2 Short-Circuit Withstand Rating
4.4 Rated Insulation Voltage
5 PRODUCT MARKING, INSTALLATION, AND MAINTENANCE INFORMATION
5.1 Marking
5.1.1 Shown on Device Nameplate, or Label Attached to
the Motor-Circuit Switch
5.1.2 Shown on Nameplate of, Label Attached to, or
Instruction Material Packaged with, the
Motor-Circuit Switch
5.2 Exception
5.3 Other Disconnect Devices for Motor Service
5.4 Marking Limitations
5.5 Operating Handles Sold Separately
6 SERVICE AND STORAGE CONDITIONS
7 CONSTRUCTION
7.1 Clearances and Creepage Distances
7.2 Minimum Air Gap in Open Position
7.3 Mechanical Design of Operating Handle and Mechanism
7.4 External Operating Handles for Disconnect Devices
7.5 Status Indication
7.6 Operating Mechanism for Disconnect Devices
7.7 Mechanical Interlock with Door(S)
7.8 Padlocking Provisions
7.9 Additional Construction Requirements for Disconnect
Devices
7.10 Fuse Mounting
8 PERFORMANCE AND TEST
8.1 Circuit-Breaker and Molded-Case Switch Type Tests
8.2 Motor-Circuit Switch Type Tests
8.3 Verification of the Strength of External Operating Handle,
Mechanism, and Position Indicating Device
9 APPLICATION
9.1 Application of Circuit Breakers
9.2 Protection of Nonfused Motor-Circuit Switches
9.3 Safety Procedure for Verifying Deenergized Condition
9.3.1 Verify that Equipment Cannot be Restarted
9.3.2 Verify that Circuit and Equipment are Deenergized
Covers disconnect devices for use in industrial control equipment, including AC motor-circuit switches rated 600 volts and separable or accessory operating mechanisms and handles for the external operation of motor-circuit switches, circuit breakers, and molded-case switches. The devices covered by this standard are for application in combination starters, motor control centers, and industrial control panels.
| DevelopmentNote |
Incorporated into NEMA ICS 2. (05/2015)
|
| DocumentType |
Standard
|
| PublisherName |
National Electrical Manufacturers Association
|
| Status |
Superseded
|
| SupersededBy |
| NEMA ICS 20:2009 (R2015) | Informational Guide to Electrical Industrial Topics |
| NEMA ICS 3.1 : 2009(R2014) | GUIDE FOR THE APPLICATION, HANDLING, STORAGE, INSTALLATION, AND MAINTENANCE OF MEDIUM-VOLTAGE AC CONTACTORS, CONTROLLERS, AND CONTROL CENTERS |
| NEMA ICS 6-1993 (R2006) | Industrial Control and Systems: Enclosures |
| NEMA ICS 9 : 1993 | INDUSTRIAL CONTROL AND SYSTEMS: POWER CIRCUIT ACCESSORIES |
| NEMA ICS 6-1993 (R2006) | Industrial Control and Systems: Enclosures |
| NEMA KS 1:2013 | Heavy Duty Enclosed and Dead-Front Switches (600 Volts Maximum) |
| NEMA ICS 1 : 2000(R2015) | INDUSTRIAL CONTROL AND SYSTEMS: GENERAL REQUIREMENTS |
| NEMA AB 1 | Molded-Case Circuit Breakers, Molded Case Switches, and Circuit-Breaker Enclosures |
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