UL 140

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

The requirements for UL 140 cover relocking devices for the following:

• Light vault doors,
• Heavy vault doors, and
• Safes or chests.

Relocking devices are intended to relock the bolt mechanism or door of a vault, safe, or chest in the event that the combination lock is subjected to attack.

A product that contains features, characteristics, components, materials, or systems new or different from those in use when the Standard was developed, and that involves a risk of fire, electric shock, or injury to persons, shall be evaluated using the appropriate additional component and end-product requirements as determined necessary to mai ntain the level of safety for the user of the product as originally anticipated by the intent of this Standard.