HT Heaters

HT– Compact PTC heaters with minimum lateral size, 25-150W

STHT Heating Touch Safe Serie

STHT – PTC heaters with touch safe, 25-150W

FSHT Fan-assisted Heater

FSHT – PTC heaters with fan, 250-750W

TMX Fan compact assisted heaters

TMX – PTC heaters with fan and touch safe, 150-400W


Super-compact and ultralight fan heater, 200 – 350 W

FPH Fan-assisted Heater

FPH – Heaters with fan, 1200-2000W

MHT Mini heaters

MHT – Compact PTC heaters, 25-50W


Enclosure heaters are often necessary to prevent failures or corrosion caused by low temperatures or high humidity inside the enclosure. Such conditions are likely to occur when ambient temperature is low and the equipment inside the enclosure is not powered or fails to dissipate enough heat to keep enclosure temperature above the minimum threshold. Outdoor enclosures, for instance, are almost always in such conditions.


According to the type of heater, surface temperature is limited either by a PTC or by an over temperature safety switch. This allows a safe operation and a self-adjusted heating power. All heaters are in Class II, except FSHT and FMHT series in Class I.

Quick Installation

Alfa electric’s heaters are quick and easy to install. All model are designed to be installed on DIN rays of 35 mm EN 50022.