NOM-003-SCFI-2014 is an Official Mexican Standard that establishes safety specifications and test methods for electrical products sold, manufactured, imported, distributed, or leased in Mexico. Issued by the Secretaría de Economía (Secretary of Economy), it was published in the Official Gazette of the Federation (Diario Oficial de la Federación) on December 10, 2014, and became effective on June 10, 2015, replacing the earlier NOM-003-SCFI-2000.

The standard aims to protect consumers by ensuring that electrical products meet minimum safety requirements to prevent risks such as electric shock, fire, and mechanical hazards.

Scope and Applicability:

NOM-003-SCFI-2014 applies to electrical products and their accessories operating at:

  • Voltages up to 1,000 V AC or 1,500 V DC (excluding specific exemptions).
  • Frequencies of 50 Hz or 60 Hz when connected to public electrical networks or other power sources (e.g., batteries, solar systems).

Covered products include a broad range of new, used, rebuilt, or second-hand electrical items for domestic, commercial, or industrial use, such as:

  • Household appliances (e.g., refrigerators, washing machines, blenders).
  • Lighting fixtures (e.g., lamps, LED bulbs).
  • Power tools (e.g., drills, saws).
  • Electrical heaters and air conditioners.
  • Extension cords, plugs, and portable sockets.
  • Electrical toys and decorations (e.g., Christmas lights).

Exclusions:

  • The standard does not apply to:
  • Electronic equipment covered by NOM-001-SCFI-2018 (e.g., TVs, audio systems).
  • Medical electrical equipment (regulated by NOM-016-SSA).
  • Equipment for explosive atmospheres or specialized industrial use.
  • Fixed installations (e.g., building wiring).
  • Components not intended for direct consumer use (e.g., raw materials).

NOM-003-SCFI-2014

Key Requirements:

1. Safety Specifications:

  • Protection against electric shock through insulation, grounding, or double insulation.
  • Prevention of fire hazards via temperature limits and flame-retardant materials.
  • Mechanical safety, ensuring stability and resistance to physical stress.
  • Protection against excessive heat or burns during normal operation.

2. Test Methods:

  • Based on Mexican standards (e.g., NMX-J series) and harmonized with international norms like IEC 60335 (household appliances) and IEC 60598 (lighting), adapted for Mexico’s electrical grid (e.g., 127 V AC, 60 Hz).
  • Tests include dielectric strength, leakage current, temperature rise, and mechanical durability, often requiring destructive evaluation.

3. Labeling:

  • Products must display:
  • Manufacturer or importer name and address.
  • Voltage, frequency, and power ratings (e.g., “127 V, 60 Hz, 500 W”).
  • NOM compliance mark or certificate number.
  • Safety warnings in Spanish (e.g., “Do not immerse in water”).
  • Information must be legible, durable, and affixed to the product or packaging.

4. Certification and Compliance:

  • Compliance must be verified by accredited bodies via testing, documentation review, and, in some cases, factory audits.
  • A certificate of conformity is required for market entry, customs clearance, and legal sale.

Purpose and Enforcement:

NOM-003-SCFI-2014 ensures that electrical products are safe under normal and foreseeable misuse conditions, addressing risks prevalent in Mexico’s diverse market of domestic and imported goods. Enforcement is managed by the Dirección General deNormas, PROFECO (Federal Consumer Protection Agency), and customs authorities. Non-compliance—such as inadequate insulation or missing certification—can lead to fines,
product seizure, or sales bans.

Safety Certifications