What Changed in GB 4943.1-2022: Two Old Standards Merged, Plus China-Specific Deviations

If you make audio/video, IT or communication equipment: GB 4943.1-2022 is not a minor revision. It merges two old standards into one and adds a batch of new requirements. Miss what changed and your design and testing will hit trouble.

The biggest change: two standards merged

GB 4943.1-2022 replaces both:

• GB 4943.1-2011 — Safety of information technology equipment, Part 1: General requirements
• GB 8898-2011 — Audio, video and similar electronic apparatus — safety requirements

Previously IT equipment and AV equipment followed two separate standards. Now it's one — mirroring the international move where IEC 62368-1 merged both categories (hazard-based safety engineering, HBSE). So computers, monitors, speakers, TVs and routers all reference the same book now.

New requirements (the ones that matter)

From the standard's foreword list of technical changes:

• Energy source classification testing (5.2, 6.2, 8.2, 9.2, 10.2) — protective requirements by energy level; this is the skeleton of the new system
• Button cell requirements (4.8) — child-resistant battery compartments and warning labels (the US counterpart is UL 4200A, familiar to Amazon sellers)
• Insulating liquids and liquid-containing equipment — new definitions and tests
• Reverse feed requirements (5.8) — protection when equipment feeds power back to the grid
• Power source circuit testing (6.2) and wireless transmitter requirements (9.6)
• Acoustic radiation requirements (10.6) — previously only optical radiation was covered; sound is now regulated too (headphones, speakers)
• Child test fingers and wedge test probes (Annex V) — new tools for evaluating enclosure openings
• Outdoor equipment requirements (Annex Y)

And the spring impact hammer test was removed — a mechanical strength test from the old standards is gone.

China-specific deviations from IEC 62368-1 (easily missed)

GB 4943.1-2022 adopts IEC 62368-1:2018 but is not a verbatim copy. There are China-specific deviations, marked with a vertical single line in the margin:

Deviation 1: Altitude scope

• IEC 62368-1:2018: equipment for use at altitudes up to 2000m
• GB 4943.1-2022: up to 5000m

The reason is China's geography (plateau regions, ethnic minority distribution). Practically: equipment intended only below 2000m can use reduced requirements, with a warning statement.

This matters for dual-market manufacturers — the same product may need 5000m design (or a warning) for China, and 2000m for Europe.

Deviation 2: Overcurrent protection devices

China's standard does not rely on protective devices in the building installation to protect equipment. The reason: domestic supply conditions — building protection may not effectively protect equipment. So additional requirements were added; equipment must withstand it itself.

This affects input protection design, especially for higher-power equipment.

Other deviations

The standard's foreword lists the complete set. For China-EU dual-market products, pull out the deviation list and check it explicitly — don't assume "IEC passed, so GB passes."

Practical advice

1. Confirm which standard your product follows now — the old IT/AV split is gone; legacy products need re-certification under the new standard.
2. Don't forget button cells — a two-year-old design may lack a child-resistant compartment.
3. Acoustic radiation is new — audio products (headphones, speakers, devices with speakers) need re-evaluation.
4. List the deviations separately — for Europe + China, altitude and overcurrent protection are the easiest to miss.
5. Learn the margin line — clauses with a vertical line are China deviations; check those when doing dual-market compliance.

The full GB 4943.1-2022 text (deviations marked, plus Annex BB's normative reference comparison) is in the StdFlow knowledge base — sign up at stdflow.com and ask an AI agent for the original text, every answer cited.