PDF Standards UL 33

Click here to purchase
Please note: All interim revisions for this edition available at time of your purchase will be included.

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 Once you place an order for an historical document, we cannot issue a refund, credit, or exchange of any kind.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 heat responsive links used for fire-protection service. These links consist of devices intended for installation under load conditions such asfor use with automatic fire suppression systems; or automatic closure devices for doors, windows, dampers or smoke relief vents.

Heat responsive links are categorized by temperature rating, type of coating or plating, minimum and maximum design load, and other factors which may have abearing on their intended use.

A product that contains features, characteristics, components, materials, or systems new or different from those covered by the requirements in this standard, and thatinvolves a risk of fire, electric shock, or injury to persons shall be evaluated using the appropriate additional component and end-product requirements to determinethat the level of safety as originally anticipated by the intent of this standard is maintained. A product whose features, characteristics, components, materials, orsystems conflict with specific requirements or provisions of this standard shall not be judged to comply with this standard. Where appropriate, revision ofrequirements shall be proposed and adopted in conformance with the methods employed for development, revision, and implementation of this standard.

Product Details

Edition:

6th

Published:

01/01/1993

Number of Pages:

20

PDF Standards UL 33

Click here to purchase
Please note: All interim revisions for this edition available at time of your purchase will be included.

Heat Responsive Links for Fire-Protection Service

UL 33

1 Scope

1.1 These requirements cover heat responsive links used for fire-protection service. These links consist of devices intended for installation under load conditions such as for use with automatic fire suppression systems; or automatic closure devices for doors, windows, dampers or smoke relief vents.

1.2 Heat responsive links are categorized by temperature rating, type of coating or plating, minimum and maximum design load, and other factors which may have a bearing on their intended use.

Product Details

Edition:

8th

Published:

03/09/2010

Number of Pages:

32

Note:

This product is unavailable in Ukraine, Russia, Belarus