Classifications

IEC Zone 1 LED Lighting

IEC Zone-Rated for Continuous Gas & Vapor Exposure
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IEC Zone 1 LED Lighting

Zone 1 is an IEC/ATEX hazardous location classification for areas where an explosive gas atmosphere is likely to occur during normal operation. Red Sky Lighting offers Zone 1-rated luminaires, aligning with the IEC classification system used outside North America's Class/Division framework.

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What Zone 1 Means

The Zone system, used internationally under IEC and ATEX standards, classifies hazardous locations by the likelihood and duration of a hazardous atmosphere. Zone 1 covers areas where an explosive gas atmosphere is likely to occur during normal operation, though not continuously — a middle tier of risk between Zone 0 (continuous presence) and Zone 2 (unlikely, brief presence).

Fixtures rated for Zone 1 must also be matched to the specific gas group and temperature class relevant to the site, similar to the gas group and T-code requirements under the North American Class/Division system.

Zone System vs. Class/Division System

These are two different frameworks for classifying the same underlying hazard type:

  • Zone system (IEC/ATEX): used in most international markets, with Zone 0, 1, and 2 for gas hazards (and Zone 20, 21, 22 for dust).
  • Class/Division system (NEC): used primarily in North America, with Class I Division 1 and 2 for gas hazards.

Zone 1 roughly corresponds to Class 1 Division 1 under the NEC system, though the two frameworks aren't a precise one-to-one match — confirm which system your specific project or region requires.

Where Zone 1 Is Needed

  • International facilities using IEC/ATEX standards — projects outside North America or specified to international code
  • LNG and petrochemical sites outside North America — regions where Zone classification is the governing standard
  • Multinational projects requiring dual classification compliance — facilities needing both NEC and IEC compliance documentation

Specifying the Right Fixture

Confirm which classification system (Zone or Class/Division) governs your specific project, since specification documents, certifying bodies, and compliance documentation differ between the two. Multinational projects sometimes require fixtures certified under both systems.

Frequently Asked Questions

Is Zone 1 the same as Class 1 Division 1?

Zone 1 roughly corresponds to Class 1 Division 1 under the NEC system, but the two classification frameworks aren't a precise one-to-one match. Confirm which system your specific project requires.

Which regions use the Zone classification system?

The Zone system (under IEC and ATEX standards) is used in most international markets outside North America, which primarily uses the Class/Division system under the NEC.

Can a fixture be certified for both Zone and Class/Division systems?

Yes, many hazardous-location fixtures are certified under both frameworks, which is common for multinational projects or manufacturers serving both North American and international markets.