---
title: "Xingguang | 45℃ High Bay Lights | LED Lighting"
description: "In a 45 ℃ hall the driver chamber often sits above 70 ℃, where an ordinary electrolytic capacitor keeps roughly a quarter of its rated life. The document to ask for is the driver's high-temperature derating curve: some models must derate 30% at 60 ℃…"
url: "https://www.xingguanglightingcn.com/en/spec/high-temperature-45c"
lang: "en"
updated: "2026-10-28"
markdown: "https://www.xingguanglightingcn.com/en/spec/high-temperature-45c.md"
---

[Home](https://www.xingguanglightingcn.com/en/) / [Selection by specification](https://www.xingguanglightingcn.com/en/spec/) / 45℃ High Bay Lights

# 45℃ High Bay Lights

In a 45 ℃ hall the driver chamber often sits above 70 ℃, where an ordinary electrolytic capacitor keeps roughly a quarter of its rated life. The document to ask for is the driver's high-temperature derating curve: some models must derate 30% at 60 ℃, which drops a whole [illuminance](https://www.xingguanglightingcn.com/en/glossary#illuminance) band while the datasheet wattage stays the same.

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## Key parameters

| Power | 100–240 W |
| --- | --- |
| Luminous flux | 13,000–32,400 lm |
| IP rating | IP65 |
| Operating temperature | -20 … +45 ℃ |

[Product family: High Bay Lights](https://www.xingguanglightingcn.com/en/product-categories/high-bay)

## Environment is not only about water

What actually kills fixtures on site, in order of how often it happens: ① heat — every 10 ℃ of chamber temperature roughly halves driver life; ② corrosive gas or salt fog — it eats the screws and the coating first and enters through the seam afterwards; ③ dust — it blocks the fins, which is heat again; ④ cold — capacitors struggle to start and plastics go brittle. IP covers only the water part.

So the order of questions should be: what is the ambient temperature, is there a corrosive medium, how is dust cleaned, what is the minimum temperature — and IP last. Reverse the order and the fixtures start failing three months in, with a perfectly adequate [IP rating](https://www.xingguanglightingcn.com/en/glossary#ip-rating).

## How to check the temperature item

This page is rated -20 … +45 ℃. Note that this is the **ambient temperature the fixture tolerates**, not the body temperature — the two differ by the temperature rise. What the driver sees is ambient plus rise, and the rise comes from heatsink area: same wattage, different construction, 20 ℃ apart.

The check is simple: ask for the driver model, then read its derating curve at the actual chamber temperature. A quote that cannot produce that curve has not answered the temperature question, whatever the ℃ figure says.

## Four things to verify before ordering

① Whether flux and efficacy are quoted for the complete fixture or the light source — a 10–15% difference that changes the fixture count. ② Whether [colour temperature](https://www.xingguanglightingcn.com/en/glossary#cct) and CRI are measured or nominal values; mixed CCT within one batch is the most common arrival dispute. ③ Driver brand and model, plus its derating curve at high temperature — it is the only part that really sets life. ④ The mounting kit list: chain, bracket and anchors in the box, or the site stops for a day.

## Concepts on this page

[High bay](https://www.xingguanglightingcn.com/en/glossary#high-bay)[Ambient temperature rating](https://www.xingguanglightingcn.com/en/glossary#ta-rating)[Lumen maintenance](https://www.xingguanglightingcn.com/en/glossary#l70)

![LED High Bay HBL-048](https://www.xingguanglightingcn.com/assets/img/prod-hbl048.webp)

### [LED High Bay HBL-048](https://www.xingguanglightingcn.com/en/products/high-bay-light-048)

200W

## Need a Lighting Plan?

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[All specification pages](https://www.xingguanglightingcn.com/en/spec/)