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UL 1203

Original price was: $631.00.Current price is: $315.00.

Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Use in Hazardous (Classified) Locations

Underwriters Laboratories , 07/10/2023

Category:
Standard By:Underwriters Laboratories , 07/10/2023
Published:07/10/2023
Language:English
Please note: All interim revisions for this edition available at time of your purchase will be included.

These requirements cover explosion-proof and dust-ignition-proof electrical equipment for installation and use in hazardous (classified) locations, Class I, Division 1, Groups A, B, C, and D, and Class II, Division 1, Groups E, F, and G, in accordance with the National Electrical Code, NFPA 70.

These requirements also cover explosion-proof electrical equipment for installation and use in Class I, Zone 1, Groups IIA, IIB, and IIC hazardous (classified) locations and dust-ignition-proof equipment for use in Zone 20, 21, and 22 locations.

These requirements also cover explosion-proof electrical equipment that has been investigated for use in one or more specific gas or vapor atmospheres with or without additional Class I Groups.

These requirements do not cover equipment for use in hazardous (classified) locations specifically covered in a separate standard.

These requirements cover equipment for use under the following atmospheric conditions:

  • A minimum ambient temperature of minus 60 °C (minus 76 °F);
  • An oxygen concentration not greater than 21 % by volume; and
  • A nominal barometric pressure of one atmosphere.

Equipment covered by this standard shall also comply with the applicable requirements for similar equipment for use in ordinary unclassified locations.

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UL 1203 pdf

Original price was: $631.00.Current price is: $315.00.

Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Use in Hazardous (Classified) Locations

Underwriters Laboratories , 11/22/2013

Category:
Standard By:Underwriters Laboratories , 11/22/2013
Published:11/22/2013
Language:English
Please note: All interim revisions for this edition available at time of your purchase will be included.

Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Use in Hazardous (Classified) Locations

UL 1203

1 Scope

1.1 These requirements cover explosion-proof and dust-ignition-proof electrical equipment for installation and use in hazardous (classified) locations, Class I, Division 1, Groups A, B, C, and D, and Class II, Division 1, Groups E, F, and G, in accordance with the National Electrical Code, NFPA 70.

1.2 These requirements also cover explosion-proof electrical equipment for installation and use in Class I, Zone 1, Groups IIA, IIB, and IIC hazardous (classified) locations and dust-ignition-proof equipment for use in Zone 20, 21, and 22 locations.

1.3 These requirements also cover explosion-proof electrical equipment that has been investigated for use in one or more specific gas or vapor atmospheres with or without additional Class I Groups. See 60.6.

1.4 These requirements do not cover equipment for use in hazardous (classified) locations specifically covered in a separate standard.

1.5 These requirements do not cover electrostatic devices, circuits or systems; refrigeration system controllers or the internal construction of electrical instruments such as meters.

1.6 These requirements cover equipment for use under the following atmospheric conditions:

  • A minimum ambient temperature of minus 50°C (minus 58°F);
  • An oxygen concentration not greater than 21 percent by volume; and
  • A nominal barometric pressure of one atmosphere.

1.7 Equipment covered by this standard shall also comply with the applicable requirements for similar equipment for use in ordinary unclassified locations.

Original price was: $265.65.Current price is: $132.00.

Explosion-Proof and Dust-Ignition Electrical Equipment for Use in Hazardous (Classified) Locations

Underwriters Laboratories , 09/15/2006

Category:
Standard By:Underwriters Laboratories , 09/15/2006
Published:09/15/2006

Original price was: $274.30.Current price is: $137.00.

Explosion-Proof and Dust-Ignition Electrical Equipment for Use in Hazardous (Classified) Locations

Underwriters Laboratories , 01/01/2000

Category:
Standard By:Underwriters Laboratories , 01/01/2000
Published:01/01/2000
By order of the publisher, historical UL documents are not returnable for any reason. Once you place an order for an historical document, we cannot issue a refund, credit, or exchange of any kind.

These requirements cover explosion-proof and dust-ignition-proof electrical equipment for installation and use in hazardous (classified) locations, Class I, Division 1, Groups A, B, C, and D, and Class II, Division 1, Groups E, F, and G, in accordance with the National Electrical Code, NFPA 70.

These requirements also cover explosion-proof electrical equipment for installation and use in Class I, Zone 1, Groups IIA, IIB, and IIC hazardous (classified) locations.

These requirements also cover explosion-proof electrical equipment that has been investigated for use in one or more specific gas or vapor atmospheres with or without additional Class I Groups. See .

These requirements do not cover intrinsically safe electrical circuits of electrical equipment for use in hazardous (classified) locations, or equipment for use in hazardous (classified) locations specifically covered in a separate standard.

These requirements cover equipment for use under the following atmospheric conditions:

  1. A minimum ambient temperature of minus 50C (minus 58F);
  2. An oxygen concentration not greater than 21 percent by volume; and
  3. A nominal barometric pressure of one atmosphere.

A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and that involves a risk of fire or of electric shock or injury to persons shall be evaluated using appropriate additional component and end-product requirements to maintain the level of safety as originally anticipated by the intent of this standard. A product whose features, characteristics, components, materials, or systems conflict with specific requirements or provisions of this standard does not comply with this standard

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