UL 60691:2019

$73.45

Standard for Thermal-Links – Requirements and Application Guide

Published By	Publication Date	Number of Pages
UL	2019-10-18	55

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Category: UL

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Description

1 Scope

This International Standard is applicable to

THERMAL-LINKS

intended for incorporation in electrical appliances, electronic equipment and component parts thereof, normally intended for use indoors, in order to protect them against excessive temperatures under abnormal conditions.

NOTE 1 The equipment is not designed to generate heat.

NOTE 2 The effectiveness of the protection against excessive temperatures logically depends upon the position and method of mounting of the

THERMAL-LINK

, as well as upon the current which it is carrying.

This standard may be applicable to

THERMAL-LINKS

for use under conditions other than indoors, provided that the climatic and other circumstances in the immediate surroundings of such

THERMAL-LINKS

are comparable with those in this standard.

This standard may be applicable to

THERMAL-LINKS

in their simplest forms (e.g. melting strips or wires), provided that molten materials expelled during function cannot adversely interfere with the safe use of the equipment, especially in the case of hand-held or

PORTABLE EQUIPMENT

, irrespective of its position.

Annex H of this standard is applicable to

THERMAL-LINK

packaged assemblies where the

thermal-link(s)

has already been approved to this standard but packaged in a metallic or non-metallic housing and provided with terminals/wiring leads.

This standard is applicable to

THERMAL-LINKS

with a

RATED VOLTAGE

not exceeding 690 V a.c. or d.c. and a

RATED CURRENT

not exceeding 63 A.

The objectives of this standard are:

a) to establish uniform requirements for

THERMAL-LINKS

,
b) to define methods of test,
c) to provide useful information for the application of

THERMAL-LINKS

in equipment.

This standard is not applicable to

THERMAL-LINKS

used under extreme conditions such as corrosive or explosive atmospheres.

This standard is not applicable to

THERMAL-LINKS

to be used in circuits on a.c. with a frequency lower than 45 Hz or higher than 62 Hz.

Modification of the fifth paragraph to add the following:

The maximum current is unlimited.

Additional information