HF-203DG DC 2000W 240VDC. Heavy duty HF portable blower heaters are ideal for heating small areas in industrial environments and are available in DC ratings for use in crane cabs. DC Rated Models equipped with DC motors and DC rated magnetic contactors wired in series with the overheat cutout. Like the AC models, DC rated units also include on/off toggle switch, 6 ft. cord and plugs except on HF-303H and HF-303E which includes the cord only and HF-403E which includes neither the cord nor the plug.