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GB/T 22200.2-2025Reliability of low-voltage apparatus - Part 2: Reliability test method for moulded case circuit-breakers (English PDF)

低压电器可靠性　第2部分：塑料外壳式断路器可靠性试验方法

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Issued by

SAMR; SAC

Level / Type

National · Recommended

Issue date

December 31, 2025

Implementation date

July 1, 2026

Scope

GB/T 22200.2-2025 is the English-translated version of 低压电器可靠性　第2部分：塑料外壳式断路器可靠性试验方法.

GB/T 22200.2-2025 is the Chinese standard "Reliability of low-voltage apparatus - Part 2: Reliability test method for moulded case circuit-breakers".

Its scope clause reads: This document specifies the reliability indicators, reliability test methods, and reliability parameters for molded case circuit breakers (hereinafter referred to as "molded case circuit breakers").

Verification test plan and procedures, test records, reliability test methods and steps under live operation, and electromagnetic environment effects on molded case circuit breakers.

The impact on the reliability of the device. This document applies to reliability testing of molded case circuit breakers conforming to GB/T 14048.2 and with a rated current not exceeding 250A.

Reliability testing of molded case circuit breakers with a rated current of 250A or higher shall be conducted in accordance with this document. Its clauses include terms, definitions and symbols.

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Document preview — GB/T 22200.2-2025

National Standard of the People's Republic of China

ICS: 29.120.70
Classification: K 33

Issued by: State Administration for Market Regulation; Standardization Administration of the PRC

Preface
Introduction
1.Scope
2 Normative References
3.Terms, Definitions, and Symbols
3.1 Terms and Definitions
3.2 Symbol
4.Reliability Indicators
4.1 General Requirements
4.2 Operational failure rate level
4.3 Overcurrent protection success rate level
5.Reliability Testing Methods
5.1 Test Conditions
5.2 Sample Preparation
5.3 Detection of Specimens
5.4 Failure Criteria
5.5 Test Apparatus for Reliability Testing
6.1 Experimental Components
6.2 Reliability Verification Test Plan
6.3 Reliability Verification Test Procedure
7.Experimental Records 9.
9.The impact of electromagnetic environment on the reliability of molded case circuit breakers
Appendix A (Informative) Schematic diagram of the reliability test apparatus for molded case circuit breakers
Appendix B (Informative) Test Report
Appendix C (Normative) Steps for determining reliability data of molded case circuit breakers under live operation
Appendix D (Informative) The Impact of Electromagnetic Environment on the Reliability of Molded Case Circuit Breakers
References

1 Scope

This document specifies the reliability indicators, reliability test methods, and reliability parameters for molded case circuit breakers (hereinafter referred to as "molded case circuit breakers").

Verification test plan and procedures, test records, reliability test methods and steps under live operation, and electromagnetic environment effects on molded case circuit breakers.

The impact on the reliability of the device.

This document applies to reliability testing of molded case circuit breakers conforming to GB/T 14048.2 and with a rated current not exceeding 250A.

Reliability testing of molded case circuit breakers with a rated current of 250A or higher shall be conducted in accordance with this document.

2 Normative references

The contents of the following documents, through normative references within the text, constitute essential provisions of this document. Dated citations are not included.

For references to documents, only the version corresponding to that date applies to this document; for undated references, the latest version (including all amendments) applies.

This document.

GB/T 2900.18-2008 Electrical Engineering Terminology - Low-Voltage Electrical Appliances

GB/T 2900.99-2016 Reliability of Electrical Engineering Terminology

GB/T 5080 (All Parts) Equipment Reliability Testing

GB/T 14048.1-2023 Low-voltage switchgear and controlgear – Part 1.General principles

GB/T 14048.2-2020 Low-voltage switchgear and controlgear – Part 2.Circuit breakers

Standard mounting rail for mechanical support

GB/T 22200.1-2025 Low-voltage electrical appliances - Reliability - Part 1.General rules

3 Terms, Definitions and Symbols

3.1 Terms and Definitions

GB/T 2900.18-2008, GB/T 2900.99-2016, GB/T 5080 (all parts), GB/T 14048.1-2023,

The terms and definitions defined in GB/T 14048.2-2020 and GB/T 22200.1-2025, as well as the following terms and definitions, apply to this document.

3.1.1 Reliable life

The amount of time required to reduce the reliability of a product to a given value.

Note. For molded case circuit breakers, reliable life is expressed as the number of operating cycles.

3.1.2 average life

The average lifespan of a batch of products. For irreparable products, it refers to the average operating time before the irreparable product fails.

3.1.3 Expiration time

From the first use until the end of the working time.

......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 24 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 5080

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