TB/T 3383-2023
Railway signaling relay AX series relay (English Version)

Standard No.

TB/T 3383-2023

Language

Chinese, Available in English version

Release Date

2023

Published By

Professional Standard - Railway  CN  /  TB

Latest

TB/T 3383-2023

Introduction

Analysis of the core content of the standard

Relay type	Working characteristics	Typical model	Working value range
Poleless relay	Independent of current direction	JWXC-1000	12-16V
Pole relay	Depends on current direction	JYXC-270	8-12V
Biased relay	Unidirectional action	JPXC-1000	10-14V

---

Key technical requirements

Environmental adaptability

The standard stipulates that the relay should work reliably in the temperature range of -40℃~+60℃ and below 3000 meters above sea level (air pressure ≥70.1kPa), among which:

• Contact resistance: ordinary contact ≤0.05Ω, reinforced contact ≤0.1Ω
• Insulation withstand voltage: 2000V/1min (rectifier relay 1000V)
• Vibration tolerance: 15Hz/0.45mm amplitude

---

Implementation points

Temperature compensation calculation

Electrical parameters need to be converted according to standard formulas:

Voltage conversion: U_t=U₂₀[1+α(t-20)] (Copper α=0.0041/℃)

Resistance conversion: R₂₀=R_t/[1+α(t-20)]

Life management

Type	Mechanical life	Electrical life
Normal contact without pole	107 times	5×105 times
Reinforced contact with pole	2×103 times	1×104 times

TB/T 3383-2023 Referenced Document

• GB/T 191 Packaging and Storage Graphic Symbols Mark*， 2025-08-29 Update
• GB/T 2408-2021 Plastics—Determination of burning characteristics—Horizontal and vertical test
• GB/T 5169.5-2020 Fire hazard testing for electric and electronic products—Part 5: Test flames—Needle-flame test method—Apparatus, confirmatory test arrangement and guidance

TB/T 3383-2023 history

• 2023 TB/T 3383-2023 Railway signaling relay AX series relay

Topics on standards and specifications

Standard and Specification