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Enclosure heaters protect electrical/electronic components from condensation moisture buildup that can result in corrosion and component failure. Heaters are available in various heating capacities, operating voltages, and mounting options. Larger capacity heaters include a fan to circulate heat inside the enclosure. Some models include integral thermostats.
Electrical Enclosure Heaters
Category Selection
- Small PTC Heaters
- Compact 50W to 200W Hazardous Location Heaters
- Touch-Safe PTC Heaters
- 550W to 650W PTC Fan Heaters
- 150W to 450W Touch-Safe PTC Fan Heaters
- 250W to 400W Touch-Safe PTC Fan Heaters with Integral Thermostat
- 500W to 700W Space-Saving Fan Heaters
- 950W Fan Heaters
- 1000W Compact PTC Fan Heaters
- 1200W PTC Fan Heaters
Thermal Management
(Temperature and Moisture Control)
AutomationDirect's touch-safe positive temperature coefficient heaters and PTC fan heaters prevent the formation of condensation and provide evenly distributed interior air temperature in enclosures.
Moisture can build up not only in outdoor or poorly insulated enclosures, but also in highly protected and well-sealed enclosures.
- Moisture, especially when combined with aggressive gases and dust, causes atmospheric corrosion and can result in the failure of components such as circuit breakers, busbars, relays, integrated circuit boards and transformers.
- Moisture and corrosion will remain low if relative air humidity stays below 60%. However, relative humidity above 65% will significantly increase moisture and corrosion problems. This can be prevented by keeping the environment inside a control panel enclosure at a temperature as little as 9°F (5°C) higher than that of the ambient air.
Small PTC Heaters
STEGO small positive temperature coefficient (PTC) heaters are designed to prevent failure of electronic components caused by condensation, corrosion and low temperatures in small enclosures.
- 5W to 13W heating capacity
- Compact size
- Wide voltage range
- Energy saving
- Heating power adjusts to ambient temperature
- CE, VDE, UL Recognized File No. E234324 & E150057, RoHS compliant
PTC Enclosure heaters start at
$11.50
(016240-03)
PTC Enclosure Heaters Overview
Compact 50W to 200W Hazardous Location Heaters
Compact convection heater for use in hazardous areas to prevent formation of condensation and frost in electrical enclosures and measuring equipment.
- For use in hazardous areas
- Large convection surface
- DIN rail and screw mounting
- Ready to use with strain relief
- Maintenance free
- Temperature class T3 (392°F/200°C max.)
Compact hazardous location heaters start at
$152.00
(020300-00)
Touch-Safe PTC Heaters
These touch-safe PTC heaters are for use in electrical panel enclosures. The design of the heater utilizes natural convection, which results in a circulating current of warm air. The heater's design minimizes surface temperatures on the accessible side surfaces of the housing.
- Compact heater, DIN rail mounting
- Temperature limiting PTC resistor heating element
- 10W, 20W, 50W, 100W and 150W heating capacities
- 12-30 VAC/VDC and 120-240 VAC/VDC input power versions
- Quiet operation
- Low surface temperature
- Double insulated protection
- CE, UL Recognized File No. E150057 (except 060401-00), RoHS compliant
Touch-safe convection heaters start at
$27.00
(060400-00)
50W to 100W Flat Heaters ... New!
The flat heater is used to provide evenly distributed temperature within enclosures with electric or electronic components. Its ultra-thin design makes it particularly suitable for high-density applications in which standard enclosure heaters are often too big.
- Contact/convection heater
- Compact
- Ultra flat design - only 0.32in {8mm} thick
- Linear expansion compensation
- Integrated temperature cut-out
- Ready-to-use with strain relief
- UL File E234324
Flat heaters start at
$92.00
(061000-00)
550W to 650W PTC Fan Heaters
The integrated thermostat is used to set the desired temperature while the high performance axial fan provides forced air circulation.
- Compact fan heater
- Heating power adjusts to ambient temperature
- Integrated adjustable thermostat
- Built-in overheat protection
- DIN rail mountable
- CE, UL Recognized File No. E204590, RoHS compliant
PTC Fan Heaters start at
$161.00
(027009-00)
150W to 450W Touch-Safe PTC Fan Heaters
The heater design minimizes side surface temperatures of the housing. The small size of these control panel heaters makes them ideal for use in enclosures where space is at a premium.
- Compact fan heater
- Quiet operation
- Heating power adjusts to ambient temperature
- Models available that are both DIN rail mountable as well as panel mounted
- CE, UL Recognized File No. E234324, RoHS compliant
Enclosure fan heaters start at
$97.00
(028009-00)
250W to 400W Touch-Safe PTC Fan Heaters with Integral Thermostat
The touch-safe plastic housing and the small size make these heaters ideal for use in enclosures with a high packing density. Each heater is equipped with a fixed set point thermostat and is easily wired via external pressure clamps.
- Compact fan heater
- Integrated pre-set thermostat
- Quiet operation
- Heating power adjusts to ambient temperature
- DIN rail or panel mount available
- CE, UL Recognized File No. E150057, RoHS compliant
Touch-Safe PTC Fan Heaters start at
$123.00
(028219-06)
500W to 700W Space-Saving Fan Heaters
These fan heaters are available with two different mounting systems – panel mounting or 35mm DIN rail mounting.
- Compact size
- Flat design
- Built-in overheat protection
- DIN rail or panel mountable
- Approvals: CE, UL Recognized File No. E234324, RoHS compliant
Space-saving fan heaters start at
$154.00
(030849-00)
950W Fan Heaters
These models are designed as stationary units to be mounted on the bottom of the enclosure.
- Compact design
- Foot mounted
- Available with integrated adjustable thermostat, fixed hygrostat, or without integral controls
- Double insulated plastic housing
- Built-in overheat protection
- CE, UL Recognized File No. E234324, RoHS compliant
Foot mounted enclosure fan heaters start at
$202.00
(030599-00)
1000W Compact PTC Fan Heaters
The plastic double insulated housing provides protection against contact with current-carrying components. This series is available with an optional fixed-point thermostat.
- Compact design
- High heating performance
- Double insulated plastic housing
- Panel or DIN Rail Mount
- Optional integrated fixed thermostat
- CE, UL Recognized File No. E234324, RoHS compliant
Compact PTC fan heaters start at
$216.00
(032099-00)
1200W PTC Fan Heaters
These compact high-performance PTC fan heaters are designed as stationary units for installation on the bottom of enclosures.
- Compact design
- Built-in overheat protection
- Double insulated plastic housing
- Integrated adjustable thermostat (optional)
- CE, UL Recognized File No. E234324 & E150057, RoHS compliant
Foot mounted PTC fan heaters start at
$219.00
(030609-00)
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