# High Temperature LED Lighting up to 150°C | Maes Lighting

> High temperature LED flood and high bay fixtures for 60°C to 150°C ambients. Compare EDGE, RT-HPH and RT-IL families by output and ambient limit.

Canonical page: https://maeslighting.com/products/high-temperature-lighting

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.

Complete category lineup

## The complete high temperature lineup.

Browse every family in the range. Open a family page for the full specification table, certifications and downloadable documentation.

EDGE Series (60-80C)

EDGE Series High Temperature LED Flood and High Bay, 60 to 80°C

Page: https://maeslighting.com/products/high-temperature-lighting/edge-60-80c

RT-HPH

RT-HPH High Temperature Round High Bay, 240 W, up to 80°C

Page: https://maeslighting.com/products/high-temperature-lighting/rt-hph

RT-IL (100C)

RT-IL High Temperature LED Flood and High Bay Light, 100°C (212°F)

Page: https://maeslighting.com/products/high-temperature-lighting/rt-il-100c

RT-IL-150C

RT-IL-150C Ultra High Temperature LED Flood and High Bay (302°F) with External Driver

Page: https://maeslighting.com/products/high-temperature-lighting/rt-il-150c

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**

| Model | Form factor | Wattage range | Typical lumens | Voltage | Optics | Max ambient temp | Key ratings |
| --- | --- | --- | --- | --- | --- | --- | --- |
| EDGE HT80 | Flood, high bay | 50 to 450 W | 7,000 to 63,000 lm | 100 to 277 V, 200 to 480 V | 20°, 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 driver | IP66, IK10, 3G or 5G, L70 > 100,000 h |
| RT-HPH 80C | Round high bay, pendant | 240 W | 31,200 lm | 100 to 277 V, 200 to 480 V | 120° beam | Up to 80 °C | IP66, 130 lm/W, CRI ≥ 80, 0 to 10 V dimming |
| RT-IL 100C (Modular + COBB) | Flood, high bay | COBB: 40–400 W, Modular: 50–500 W | COBB: 6,400–64,000 lm, Modular: 7,500–75,000 lm | COBB: 100–277 V, 347–480 V, Modular: 90–295 V, 347–480 V | COBB: 10°, 25°, 40°, 60°, 90°, 120°, Modular: multiple lens choices | Up to 100°C (212°F) | IP66 (COBB) / IP67 (Modular), CRI 80+, 5 yr |
| RT-IL-150C | Flood, high bay with external driver | 50 to 500 W | 7,500 to 75,000 lm | 90 to 295 V or 347 to 480 V | Multiple lens choices | Light 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.

### Related categories

If the limiting condition is different, one of these is usually the better starting point.

- [High BayTall spaces at normal ambient temperatures.](https://maeslighting.com/products/high-bay-lighting)
- [Flood & AreaExterior and yard lighting without the heat load.](https://maeslighting.com/products/flood-area-lighting)
- [Explosion ProofWhere the area is also classified as hazardous.](https://maeslighting.com/products/explosion-proof-lighting)

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.

## Include in your quote request

Ambient

Measured at mounting height

Duration

Peak or sustained

Driver

Integral or remote

Mounting

Flood, high bay or pendant

Optics

Beam angle required

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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Maes Lighting — nationwide supplier of certified explosion proof, industrial, high-temperature,
food-processing, vapor-tight, high-bay, flood, area, and emergency LED lighting.
Headquarters: Broken Arrow, Oklahoma. Sales: (866) 860-6399 · tjacobs@maeslighting.com
Website: https://maeslighting.com