Class I Division 2 Emergency Lights – Explosion‑Proof Fixtures

Class I Div 2 Emergency Lights – C1D2, UL 844/924 (NEMA 4X/IP66)

Class I Division 2 emergency lights (C1D2) are engineered for hazardous industrial areas where flammable gases or vapors may be present under abnormal conditions. These explosion-resistant fixtures carry UL 844 hazardous-location and UL 924 emergency lighting listings to help prevent ignition while delivering code-required egress illumination. Explore related categories: Emergency Lights, wet-location emergency lights, and hazardous location emergency lights.

UL 844 / UL 924 C1D2 Rated NEMA 4X / IP66 LED or MR16 90-min Backup Self-Testing

Housings are heavy-duty die-cast aluminum or fiberglass-reinforced with gasketed enclosures, impact-resistant lenses, and corrosion-resistant hardware. The NEMA 4X / IP66 seal protects against water, dust, and wash-down, making these units suitable for refineries, chemical plants, paint shops, and grain handling facilities.

Choose high-output LED heads for efficiency and long life, or MR16 (halogen/LED) lamps for tight beam control—spot and flood distributions available. Integrated, maintenance-free batteries (lithium or Ni-Cd) supply a minimum 90 minutes of emergency runtime. Many models include universal 120/277 VAC input, remote-capable outputs, and self-testing diagnostics to automate monthly/annual checks.

What does Class I Division 2 mean?
C1D2 covers areas where flammable gases/vapors are present only abnormally (e.g., leaks). Fixtures must contain or prevent arcs/heat from igniting the atmosphere.

For non-explosive but harsh environments, consider wet-location emergency lights or damp-location units.

Specification tip: Verify gas group (IIA/IIB/IIC), temperature code (e.g., T4/T6), ambient rating, and exact ingress protection in each product’s submittal before installation.

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✅ What to Look For in Class I Div 2 Emergency Lights

  • Class I Division 2 (Groups A–D) Certification: Ensures safe operation in flammable gas/vapor environments outside primary hazard zones.
  • UL 924 & UL 844 Listing: Approved for emergency egress and hazardous location usage.
  • NEMA 4X / IP66 Rated Housing: Fully gasketed, explosion-proof aluminum or polycarbonate body resists water, dust, and impacts.
  • High-Output LEDs or MR16 Heads: Provide bright, adjustable illumination (600–1600 lm) suitable for wide-area coverage.
  • Battery Backup (Li-Ion or Ni-Cd): 90-minute runtime with rapid recharge; sealed for hazardous use.
  • Self-Testing Diagnostics: Automated monthly/annual tests reduce maintenance in rugged environments.
  • Remote Head Capability: Powers additional luminaires to expand coverage from one unit.
  • Dual 120/277 VAC Input: Ensures compatibility with commercial electrical systems in industrial settings.

FAQs About Class I Division 2 Emergency Lights

What is Class I Division 2?

Class I Division 2 areas are spaces where flammable gases or vapors may occasionally be present under abnormal conditions—and these fixtures are certified to withstand those environments.

Are these units explosion-proof?

Yes. They feature explosion-resistant housings with UL 844 and UL 924 listings and gasketed, impact-resistant enclosures.

What environments are they used in?

Commonly installed in oil refineries, chemical plants, wastewater treatment facilities, grain elevators, and other industrial sites with flammable atmospheres.

What kind of batteries do they use?

Models use sealed lithium-ion or nickel-cadmium batteries that provide a minimum 90-minute emergency runtime and withstand harsh conditions.

Can they power remote heads?

Yes—many models support remote lamp heads to expand illumination from a single unit’s power source.

Are self-testing diagnostics included?

Many units include automated self-test circuits that perform monthly and annual diagnostics, simplifying inspection and maintenance routines.