GB/T 25890.2-2026 Active National standards

GB/T 25890.2-2026 Railway applications—Fixed installations—DC switchgear—Part 2:DC circuit breakers

GB/T 25890.2-2026 Railway applications—Fixed installations—DC switchgear—Part 2:DC circuit breakers

Publish Date: 2026-01-28 Implement Date: 2026-08-01 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: GB/T 25890.2-2026

Standard Type: National standards

Standard Status: Active

is_force_gb: no

CCS Name: Traction substation

ICS Name: Electric traction equipment

Publish Date: 2026-01-28

Implement Date: 2026-08-01

Pages: 36 pages

Scope

This document specifies the operating conditions, circuit breaker characteristics, structural and performance requirements, information and markings, and inspection rules for DC circuit breakers in traction power supply systems. It also describes the relevant test methods. This document is applicable to the parameter selection, structural design, and inspection of DC circuit breakers in traction power supply systems. Note: This document does not specify requirements for complete switchgear, electromagnetic compatibility (EMC), and reliability. These requirements are specified in other parts of GB/T 25890.

Development Information

Word Count: 55 Thousand words Pages: 36 pages

Same series standard

GB/T 25890.1-2026 Railway applications—Fixed installations—DC switchgear—Part 1:General GB/T 25890.3-2026 Railway applications—Fixed installations—DC switchgear—Part 3:Indoor d.c. disconnectors,switch-disconnectors and earthing switches GB/T 25890.4-2026 Railway applications—Fixed installations—DC switchgear—Part 4:Outdoor d.c.disconnectors,switch-disconnectors and earthing switches GB/T 25890.5-2026 Railway applications—Fixed installations—DC switchgear—Part 5:DC switchgear assemblies

Replace the following standards

GB/T 25890.2-2010 Railway applications—Fixed installations—DC switchgear—Part 2:DC circuit breakers

Referenced Standards

GB/T 1402-2025 Railway applications—Supply voltages of traction systems GB/T 25890.1-2026 Railway applications—Fixed installations—DC switchgear—Part 1:General GB/T 25890.5-2026 Railway applications—Fixed installations—DC switchgear—Part 5:DC switchgear assemblies GB/T 32350.1-2025 Railway applications—Insulation coordination—Part 1:Basic requirements—Clearances and creepage distances for all electrical and electronic equipment

Adopt standards

IEC 61992-2:2014

Related Standards

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