Type HSH The HSH is a large surface aluminium housed resistor which disposes of heat without the use of additional heat sink. It is well suited as a heating element or for dehumidifying purposes. The HSH heating element in enclosed electrical equipment is efficient under special conditions such as vibration. The aluminium profile reaches a low temperature in proportion with the power dissipated. POWER RESISTOR The graph shows the surface temperature and the hot spot temperature (< 220°C) compared to the load at an ambient temperature of 25°C by natural convection. The wattage range is proportionally reduced at higher ambient temperature due to hot spot temperature < 220°C. For forced air cooling please ask for further information. HEATING ELEMENT The table demonstrates the standard power range at 25°C ambient temperature. It also indicates the corresponding power at 70°C ambient. Surface temperature rises are by natural convection.