The Helios EHR‑K 24÷50÷25−30 is an enclosed electric heater designed for integration into ductwork alongside duct fans. Housed in a galvanized steel sheet casing, it features flanged inlet and outlet connections for secure installation within rectangular ventilation ducts. The heater includes low surface temperature elements to ensure safe and efficient operation.
A built-in terminal box provides flexibility by allowing various heating stages to be configured. To protect against overheating, the unit is equipped with two thermal cut-outs: one that automatically resets at 90 °C and another manual reset type triggered at 130 °C, ensuring reliable thermal safety control.