GB/T 9816.1-2023Thermal-links - Part 1: Requirements and application guide (English PDF)

1 Scope

This document specifies the classification, structural requirements, electrical requirements, temperature test, and technical requirements for rust prevention of thermal links:

This document applies to electrical appliances, electronic equipment and similar components installed in general indoor environments to prevent them from malfunctioning

In case of overheating of the thermal link:

Note 1: The equipment is not necessarily designed to generate heat:

Note 2: The effectiveness of over-temperature protection is related to the installation position and installation method of the thermal fuse and the magnitude of the current it carries:

This document may also be used in non-indoor conditions if the climatic and other conditions in which the thermal-link is located are similar to those specified in this document:

The thermal link used under the condition:

This document also applies to thermal-links of simple shape (such as fusible links or fuses), as long as the molten material discharged during operation does not affect affect the safe use of equipment, especially for hand-held or portable devices, regardless of their location, will not affect their safe use:

Appendix H of this document applies to thermal-link bodies that have been approved by this document, but are encapsulated in a metal or non-metal shell and equipped with

Thermal link package assembly with terminals/leads:

This document applies to thermal links with a rated voltage not exceeding 690V AC and DC and a rated current not exceeding 63A:

The purpose of this document is to:

a) Formulate requirements for thermal links;

b) define the method of testing;

c) Provide useful information for the application of thermal links in equipment:

This document does not apply to:

---Thermal links used in extreme conditions such as corrosive or explosive atmospheres;

--- Thermal fuses on AC circuits with frequencies below 45Hz or above 62Hz:

2 Normative references

The contents of the following documents constitute the essential provisions of this document through normative references in the text: Among them, dated references

For documents, only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to this document:

GB/T 4207 Method for determination of tracking resistance index and relative tracking index of solid insulating materials (GB/T 4207-2022,

IEC 60112:2020, IDT)

GB/T 5169:12-2013 Fire hazard tests for electrical and electronic products - Part 12: Basic test methods for glow wire/hot wire materials

Glow-wire flammability index (GWFI) test method for materials (IEC 60695-2-12:2010, IDT)

GB/T 5169:13-2013 Fire hazard tests for electrical and electronic products - Part 13: Basic test methods for glow wire/hot wire materials

Glow-wire ignition temperature (GWIT) test method for materials (IEC 60695-2-13:2010, IDT)

GB/T 5169:16-2017 Fire Hazard Tests for Electrical and Electronic Products Part 16: Test Flame 50W Horizontal and Vertical Fire

Flame test method (IEC 60695-11-10:2013, IDT)

GB/T 5169:21-2017 Fire Hazard Tests for Electrical and Electronic Products Part 21: Abnormal Hot Ball Pressure Test Method (IEC 60695-10-2:2014, IDT) […]