Product category · Elevated ambient

High temperature LED lighting for hot process areas.

Flood and high bay families rated for ambients where standard LEDs derate or fail — steel, glass, foundry, paper, chemical processing and power generation. Selection starts with the measured ambient at the fixture, not at floor level.

EDGE Series high temperature LED flood and high bay fixture
60°C to 150°C ambient options by family
150CHighest documented ambient
500WHighest documented wattage
IP66Ingress rating across families
4Documented fixture families

At a glance

Compare high temperature families by ambient limit.

Ambient limit is the first filter — a fixture rated to 80°C does not belong in a 100°C bay regardless of its output.

At-a-Glance High Temperature LED Lighting Model Comparison
ModelForm factorWattage rangeTypical lumensVoltageOpticsMax ambient tempKey ratings
EDGE HT80Flood, high bay50 to 450 W7,000 to 63,000 lm100 to 277 V, 200 to 480 V20°, 30°, 50°, 90°, 110°, 150°, 30×100°, 60×100°, 130×70°, 70×135°, 75×145°, 60×150°, 73×133°80 °C, 100 °C with remote driverIP66, IK10, 3G or 5G, L70 > 100,000 h
RT-HPH 80CRound high bay, pendant240 W31,200 lm100 to 277 V, 200 to 480 V120° beamUp to 80 °CIP66, 130 lm/W, CRI ≥ 80, 0 to 10 V dimming
RT-IL 100C (Modular + COBB)Flood, high bayCOBB: 40–400 W, Modular: 50–500 WCOBB: 6,400–64,000 lm, Modular: 7,500–75,000 lmCOBB: 100–277 V, 347–480 V, Modular: 90–295 V, 347–480 VCOBB: 10°, 25°, 40°, 60°, 90°, 120°, Modular: multiple lens choicesUp to 100°C (212°F)IP66 (COBB) / IP67 (Modular), CRI 80+, 5 yr
RT-IL-150CFlood, high bay with external driver50 to 500 W7,500 to 75,000 lm90 to 295 V or 347 to 480 VMultiple lens choicesLight head: up to 150 °C (302 °F), driver: up to 100 °C (212 °F)IP67, external driver (212 °F max), L70 > 80,000 h

Ambient figures describe the fixture's rated environment, not the surface it is mounted to. Confirm the measured temperature at mounting height before selecting.

Specification path

Measure the ambient before choosing the output.

High heat shortens driver life, degrades optics and drives lumen depreciation long before a fixture fails outright. Confirm the ambient measured at mounting height across a full production cycle, then check whether the driver is integral or remote — the 150°C family places the driver outside the heat, which changes both mounting and conduit work.

A fixture rated for a given ambient assumes free air movement around the housing. Enclosed or radiant-loaded positions need the next tier up.

Common questions

Frequently asked questions

These answers clarify the selection process without replacing project-specific documentation.

How is the ambient rating on these fixtures measured?

The rating describes the air temperature the fixture is qualified to operate in. Measure at mounting height during peak production rather than at floor level, since the difference in a hot bay is often substantial.

When is a remote driver necessary?

The RT-IL-150C family places the driver outside the heat and is the documented option for the highest ambient tier. Confirm the driver location and cable run before mounting, since it changes the installation.

Do the high temperature families carry hazardous-location listings?

Not automatically. High ambient and area classification are separate requirements. If the area is classified, review the explosion proof category and confirm both requirements against the specific catalog number.

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