Definition and general information
Aluminum electric heaters are designed to maintain the temperature of electrical boxes and cabinets. They prevent freezing, condensation, corrosion and surface leakage in cold or damp environments.
They are widely used in various industrial sectors (power generation, industrial processes, food processing, etc.), for all types of enclosures containing electrical equipment.
Their operation is based on the principle of natural convection. Air in contact with the equipment becomes lighter and rises, while cold air descends to be heated in turn. This movement creates a natural air circulation that spreads heat gently, progressively and silently.
Installation should be vertical, at the bottom of the enclosure to be heated. For larger volumes, we recommend installing several heaters, evenly distributed.
Each cabinet heater consists of a finned aluminum block, acting as a heat sink, into which an electric heating resistor is inserted. It is equipped with a safety thermostat limiting the surface temperature to 70°C, a 300 mm long power cable, and a snap-on system for easy mounting on a 35 mm symmetrical DIN rail.
Robust and waterproof (up to IP55 depending on model), these heaters are ideal for demanding industrial environments.
- Unit power from 20 W to 250 W at 230 V single-phase.
- IP30 or IP55 sealing
- Safety thermostat to limit surface temperature to 70°C
- Power cable 2P + T, length 300 mm
Applications
Aluminum cabinet heaters are used in a wide range of applications. Here are just a few examples:
Food industry
In a dairy processing plant, electrical equipment is installed in an area with high humidity. Recurrent condensation in electrical cabinets causes oxidation and machine stoppages.
Environment
A wastewater treatment plant has several control cabinets located in semi-open buildings. The combination of humidity and condensation accelerates circuit degradation.
Energy sector
In a power station in a mountainous area, winter temperatures regularly drop below -15°C. Outdoor control and distribution cabinets are exposed to frost, which can damage sensitive components.
Industrial processes
In the paper industry, ambient humidity penetrates electrical cabinets, causing condensation and machine stoppages. Heaters ensure a dry, stable environment for automation systems.
Technical data
Aluminum cabinet heaters consist of :
- The finned aluminum block acts as a heat sink, into which the heating resistor is inserted.
- The safety thermostat limits the surface temperature of the heater to 70°C.
- Fixing clips for mounting the heater on a 35 mm DIN rail.
- 300 mm 2P+T power cable.
Further information
- Aluminum cabinet heaters are not suitable for ATEX environments.
- The heaters can be combined with a room thermostat for temperature control.
Recommendations
Precautions for use
Avoid proximity to heat-sensitive components (min. 50 mm).
Installation and connection
The cabinet heater must be mounted vertically, with the power cable pointing downwards, in the lower part of the cabinet or electrical box.
The ground wire (green/yellow) must be connected to the system earth.
Please refer to the instruction manual for all recommendations relating to the equipment.
