What’s Under the Hood: Power and Size
We built this outdoor radiant heater to run on 400V, at 2500W, packed into a 300mm tube. Going 400V means it pulls less current than a 230V unit of the same wattage. That’s the kind of detail that makes your life easier: you can use thinner wiring and not worry about voltage dropping off over longer runs. And that 300mm length? It gives you a lot of heat in a surprisingly small footprint.
The Materials and the Feel
The tube is quartz, filled with halogen. That combo keeps the filament steady and stops the glass from darkening over time. The heat comes on fast—shortwave output means you don’t wait around. You flip it on, and you feel it. Immediate. The R7s connector is simple and solid. It’s a direct bi-pin fit that carries the full current without extra fiddling. Wire it, clamp it, and it stays put. No drama.
Where It Shines—and What to Keep in Mind
This setup is made for outdoor spots, process heating, and enclosures that get hammered by wind and weather. Because it runs on 400V, your panel needs a dedicated feed and proper overcurrent protection. No cutting corners there. At 2500W, it’s putting out serious, focused heat. So plan for heat management and make sure your guarding is in place. You’re going to get strong output. Just make sure your cooling and controls are sized to match the load.