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Hazardous Location (Explosion‑Proof) Emergency Lights, Exit Signs & Exit Sign Combos

Shop Hazardous Location Emergency Lights, Hazardous Location Exit Signs, and Hazardous Location Exit Sign Combos for classified areas. These fixtures are commonly searched as explosion proof emergency lights, explosion proof exit signs, and explosion proof exit sign combos. Use in areas classified as Class I/II/III, Division (or Zone) per NEC/CEC/IEC—then match the fixture’s nameplate listing to your exact Class/Division (or Zone) / Group and temperature code.

UL 844 Haz‑Loc Listed Options UL 924 • 90‑Min Egress Options Class I/II/III • Div/Zone Rated Options Explosion‑Proof Construction Self‑Testing Options 120/277 VAC (Common)
💡 Hazardous location vs. explosion‑proof: “Hazardous‑location listed” is the certification for a specific Class/Division/Zone & Group (ex: UL 844). “Explosion‑proof” describes the enclosure method used to contain an internal ignition. In practice, many hazardous‑location fixtures use explosion‑proof construction to satisfy the listing.

Hazardous‑Location (Explosion‑Proof) Buying Tips
  • Start with classification: Confirm Class / Division (or Zone) / Group and match the fixture’s haz‑loc listing and temperature code (T‑code) to the space.
  • UL listings: For classified areas, look for UL 844 matching the environment. For emergency egress performance, use devices listed to UL 924 (illumination/transfer/indicators/90‑minute).
  • Choose the right product family: Use explosion‑proof exit signs for wayfinding, explosion‑proof emergency lights for illumination, and explosion‑proof exit sign combos when you need both at the same location.
  • Enclosure integrity: Explosion‑proof housings use flame‑path joints and threaded/sealed entries. NEMA/IP ratings improve durability but do not replace haz‑loc certification.
  • Egress illumination: Aim lamp heads/optics to support about 1 fc average and 0.1 fc minimum for the full 90 minutes along the path of egress (doors, stairs, turns).
  • Exit legend specs: 6" LED letters (red/green), single/double‑face with field chevrons; confirm viewing distance for long industrial sightlines.
  • Wiring methods: Use approved conduit, sealing fittings, and gasketed entries per NEC to protect flame paths and prevent gas/dust migration.

Summary: For classified spaces, specify hazardous location (explosion‑proof) emergency lights, exit signs, and exit sign combos listed to UL 844 for the exact Class/Division (or Zone/Group), and use UL 924 egress equipment where emergency illumination/signage and 90‑minute performance are required. Treat NEMA/IP ratings as supplemental environmental protection.

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Hazardous Location (Explosion‑Proof) — Features & Specs

Hazardous location (explosion-proof) how to specify infographic: Step 1 confirm Class/Division/Zone/Group and T-code; Step 2 choose product type (exit signs, emergency lights, exit sign combos); Step 3 confirm UL 844 hazardous location listing vs UL 924 emergency egress performance; Step 4 add NEMA/IP environmental protection as supplemental; Step 5 install with sealing fittings and verify photometrics and 90-minute egress.
5-step spec flow for hazardous location (explosion-proof) exit signs, emergency lights, and exit sign combos.

Hazardous Location (Explosion‑Proof) Exit Signs

Use hazardous location / explosion‑proof exit signs to keep the EXIT legend visible in classified environments. Match the sign’s UL 844 listing to your Class/Division (or Zone) & Group, and use UL 924 when emergency egress performance and 90‑minute backup are required.

Hazardous Location (Explosion‑Proof) Emergency Lights

Use hazardous location / explosion‑proof emergency lights to provide illumination along egress routes in hazardous atmospheres. Verify the classification listing, then use photometrics/head aiming to maintain required light levels at the 90‑minute mark.

Hazardous Location (Explosion‑Proof) Exit Sign Combos

Use hazardous location / explosion‑proof exit sign combos when you need both the EXIT legend and emergency illumination at the same point (often above doors), and want fewer devices and penetrations. Confirm the battery budget supports sign + heads for the full 90 minutes.

  • Certifications: Match the classified environment with UL 844 and use UL 924 for emergency egress performance (illumination, transfer, indicators, 90‑min) where required.
  • Classification match: Specify by Class I/II/III, Division/Zone, and Group; verify temperature code and ambient rating.
  • Explosion‑proof construction: Flame‑path joints, threaded covers, and sealed entries help contain any internal ignition and reduce ignition risk to the surrounding atmosphere.
  • Ingress & corrosion protection: Weather/wash‑down resistance (e.g., NEMA 4/4X, IP65/66) improves durability; use in addition to the haz‑loc listing.
  • Egress photometrics: Design for about 1 fc average / 0.1 fc minimum at the 90‑minute mark; aim adjustable heads to cover stairs, doors, and turns.
  • Exit legend visibility: 6" LED letters (red/green), single/double‑face with field chevrons; select viewing distance for long industrial sightlines.
  • Power & electronics: Commonly 120/277 VAC, with brownout/surge protection; self‑testing options can simplify monthly/annual checks.
  • Battery systems: Ni‑Cd or lithium packs sized for load and ambient; cold‑weather kits as needed; maintain ≥90 minutes for sign + heads on combo units.
  • Wiring methods: Use approved conduit and sealing fittings per NEC to maintain enclosure integrity and reduce gas/vapor/dust migration.

Additional Resources

FAQs About Hazardous Location (Explosion‑Proof) Emergency Lights, Exit Signs & Combos

Are “hazardous location exit signs” the same as “explosion proof exit signs”?

In common use, yes—people often use the terms interchangeably. The key is that “hazardous‑location listed” means the product is certified (e.g., UL 844) for a specific Class/Division/Zone and Group. “Explosion‑proof” describes the enclosure method used to help contain an internal ignition. Always match the fixture’s nameplate to your classification and temperature code.

Do these products need both UL 844 and UL 924?

UL 844 covers suitability for the classified environment (Class/Division/Group). UL 924 covers emergency egress performance—transfer behavior, indicators, and the required 90‑minute operation—when emergency lighting/signage is required for the path of egress.

Are NEMA/IP ratings the same as hazardous‑location ratings?

No. NEMA/IP indicate water/dust/corrosion protection and mechanical durability. They are often present on haz‑loc gear (e.g., NEMA 4X, IP66), but they do not replace hazardous‑location certification. Match the Class/Division/Zone and Group first; use NEMA/IP as additional environmental protection.

When should I choose an explosion‑proof exit sign combo instead of separate devices?

Use an explosion‑proof (hazardous location) exit sign combo when you need both the EXIT legend and emergency illumination at the same location (often at an exit door) and want fewer devices, penetrations, and maintenance points. Confirm the combo’s battery budget supports both the sign and lamp heads for the full 90 minutes.

How do I size light output for egress in classified areas?

Plan for roughly 1 fc average and 0.1 fc minimum at the end of the 90‑minute discharge, then validate with photometrics for your mounting height and layout. Aim adjustable heads to cover stairs, doors, and turns along the egress path.

What wiring/sealing steps are critical in classified spaces?

Follow NEC hazardous‑location wiring methods: use approved conduit, sealing fittings, and gasketed/threaded entries as required by the area classification. Proper sealing helps maintain enclosure integrity and reduces gas or dust migration into enclosures and raceways.

Hazardous Location / Explosion‑Proof Glossary (Quick Reference)

Explosion‑Proof (Hazardous Location) Emergency Lights — Battery‑backed luminaires listed for classified spaces (match UL 844 to Class/Division/Zone & Group). Where emergency egress is required, use UL 924 models that provide 90‑minute illumination.
Explosion‑Proof (Hazardous Location) Exit Signs — “EXIT” fixtures for classified environments with 6" LED letters (red/green) and 90‑minute backup on emergency models per UL 924; match the hazardous‑location listing (e.g., UL 844) to the exact area classification.
Explosion‑Proof (Hazardous Location) Exit Sign Combos — A single enclosure combining an exit sign and emergency lamp heads; used at exit doors/intersections in classified zones to reduce devices and penetrations. Confirm the unit is properly listed for the classification and supports the full 90‑minute requirement where applicable.
Class / Division / Zone — NEC/IEC schemes describing the hazard type (Class I gases/vapors, Class II dusts, Class III fibers) and likelihood of presence (Division 1/2 or Zones 0/1/2). Always match the product’s rating to the location.
NEMA / IP Ratings — Environmental protection grades (water, dust, corrosion). Useful for wash‑down/weather exposure but do not indicate suitability for explosive atmospheres; haz‑loc certification is separate.