Based on the search results, TR TS 004/2011 (also known as CU TR 004/2011) governs the safety requirements for low-voltage equipment in the Eurasian Economic Union (EAEU). The compliance assessment can be achieved through either an EAC Certificate (CU-TR Certificate) or an EAC Declaration (CU-TR Declaration), depending on the product type and risk level. Here are the key differences and requirements:
🔍 1. Core Differences Between EAC Certificate and EAC Declaration
Aspect    EAC Certificate (CU-TR Certificate)    EAC Declaration (CU-TR Declaration)
Applicability    Mandatory for higher-risk products (e.g., household appliances, cables, power tools)     Mandatory for lower-risk products not covered by the Certificate list 
Issuing Authority    Issued by EAEU-accredited certification bodies     Self-declared by the applicant, registered by EAEU bodies 
Applicant Requirements    Any entity (including foreign manufacturers)     Only EAEU-registered entities (e.g., local importers/distributors) 
Testing & Audits    - Samples tested in EAEU-approved labs
- Factory audits required for batch production     - Testing may be done via existing reports or simplified protocols
- No factory audits (except Scheme 6D) 
Validity    Up to 5 years for batch production; single shipment for limited batches     Up to 5 years; validity tied to production batches or contracts 
⚙️ 2. Product Scope Under TR CU 004/2011
Products Requiring EAC Certificate :
Household appliances (e.g., kitchen devices, washing machines, vacuum cleaners).
Personal computers and peripherals.
Power tools, cables, wires.
Lighting equipment, switches, circuit breakers.
Electrical instruments (e.g., pumps, chargers).
Products Requiring EAC Declaration :
Other low-voltage equipment (50–1000V AC or 75–1500V DC) not listed in the Certificate scope.
Examples: Certain industrial control devices, non-household electrical components.
Exemptions :
Medical devices, explosion-proof equipment, elevators, transport-specific electrical systems.
📋 3. Certification Procedures
For EAC Certificate (Schemes: 1C, 3C, 4C) :
1C: Batch production (tests + factory audit + annual inspections).
3C/4C: Single-batch or single-product (tests only, no audit).
Steps: Application → Lab testing → Factory audit (if applicable) → Certification → Annual surveillance.
For EAC Declaration (Schemes: 1D–6D) :
1D/2D: Self-testing based on technical files.
3D/4D: Testing in EAEU-accredited labs.
6D: Requires quality management system (ISO 9001) audit.
Steps: Application → Testing/document review → Registration in EAEU database.
⚠️ 4. Key Considerations
Foreign Manufacturers: Must appoint an EAEU-based representative (importer or authorized agent) for both certificates and declarations .
Documentation: Technical files, test reports, user manuals (in Russian/EAEU languages), ISO 9001 (optional but recommended) .
EAC Marking: Mandatory for all certified/declared products .
Interchangeability: A Certificate cannot be replaced by a Declaration for high-risk products, but a Declaration-eligible product may opt for a Certificate .
💎 Summary
Use EAC Certificate for high-risk products like household appliances or cables. It requires rigorous testing and factory audits.
Use EAC Declaration for other low-voltage equipment. It relies on self-declaration with minimal testing.
Compliance ensures market access to Russia, Belarus, Kazakhstan, Armenia, and Kyrgyzstan .
For specific product classification or procedural details, consult an EAEU-accredited certification body.