Definition and general information
Finned 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 heating elements becomes lighter and rises, while cold air descends to be heated in turn. The presence offins on the heating elements promotes heat exchange with the air.
This movement creates a natural air circulation that spreads heat gently, progressively and silently.
The unit can be floor-mounted or wall-mounted using wall brackets (available as an option), but always in a horizontal position and preferably in the lower part of the enclosure.
Each cabinet heater consists of one or two finned shielded electrical resistors, mounting feet and a protective cover for the electrical connections.
It is equipped with a thermostat adjustable from 0 to 120°C, connected to the power supply, for independent temperature control.
Rugged and waterproof up to IP42, these cabinet heaters are ideal for demanding industrial environments.
- Unit power from 115 W to 3000 W
- Voltage: 110 V, 127 V or 230 V single-phase
Applications
Finned cabinet heaters are used in many 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
Finned cabinet heaters consist of :
- Shielded finned electric resistors are the heating elements of the heater.
- 2 Support feet for floor or wall mounting.
- Electrical connection is via an IP42 connection protection box, fitted with a cable gland.
- A temperature control thermostat, adjustable from 0 to 120°C, installed inside the protective casing. The adjustment knob is accessible from the outside. The thermostat bulb is located under the heating elements, in a thermowell.
Further information
- Aluminum cabinet heaters are not suitable for ATEX environments.
- The heaters can be combined with a room thermostat for temperature control.
- In addition to the wide range of finished products shown in our online catalog, Vulcanic is able to design custom-built equipment to meet your specific requirements (power, voltage, etc.).
Recommendations
Precautions for use
Avoid proximity to heat-sensitive components (min. 50 mm).
In large spaces, install several heaters, if necessary, in evenly spaced locations.
Installation and connection
To obtain a more precise internal cabinet temperature, it is preferable to control the cabinet heater using a room thermostat connected in series with the heater thermostat, which should then be set to a temperature setpoint approximately 30°C higher than that of the room thermostat.
Please refer to the instruction manual for all recommendations relating to the equipment.
