http://heatlamppro.com/en/tags/400w/ Recent content in 400w on Heat Lamp Pro Hugo en-us Wed, 08 Jul 2026 00:12:44 +0800 http://heatlamppro.com/en/posts/300w-400w-500w-halogen-bulb/ Wed, 08 Jul 2026 00:12:44 +0800 http://heatlamppro.com/en/posts/300w-400w-500w-halogen-bulb/ <p><img src="http://heatlamppro.com/images/9dea2e03a207e494d387aba5ae626f94.jpg" alt="300w 400w 500w halogen bulb"></p> <h2 id="power-density-and-electrical-specification">Power Density and Electrical Specification</h2> <p>We make these halogen bulbs in 300W, 400W, and 500W sizes because sometimes you need serious heat in a tight spot. The wattage sets how much heat you get per inch, so you can hit the same energy level on the part, every time. And they’re low-voltage designs—typically 120V or 230V—so you can wire them straight into what you already have. No re-engineering the whole plant power setup. Tube length is matched to the wattage, too. A 300W unit might be around 300mm, while a 500W runs longer. That extra length spreads the heat out, so the quartz envelope doesn’t get hammered with hot spots. The payoff? A calmer filament temperature and less stress when you switch the lamp on and off quickly.</p>