Enclosure Fan Heaters

CR027 Series

Fan Heaters | CR027 Series

Fan Heaters

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  • Compact Enclosure Fan Heater in PTC Technology
  • Compact Fan Heater in PTC Technology
  • Heating Power Adjusts to Ambient Temperature
  • Integrated Adjustable Thermostat and Control Light
  • DIN Rail Mountable


An easy DIN rail mountable design makes the CR027 Series fan heater an ideal accessory for any enclosure. The CR027 maintains minimum operating temperatures in enclosures and helps to prevent failure of electronic components caused by condensation and corrosion.

To determine the required heater size follow this equation:

PH = (A x ΔT x k) - Pv
    PH = Required heating power for your application in Watts (W)
    Pv = Heating power generated by existing components (e.g. a transformer) in Watts (W)
    A = Exposed enclosure surface area square meters (m2)
    ΔT = Temperature differential between the desired minimum interior temperature and lowest possible external temperature of the enclosure in Kelvin (K), 1.8°F = 1°C = 1K
    k = Heat transmission coefficient of the enclosure material used:
        Stainless Steel: 3.7 W/m2K
        Painted Steel: 5.5 W/m2K
        Aluminum: 12 W/m2K
        Polyester/Plastic: 3.5 W/m2K
For outdoor applications it is recommended to double the heating power.

Heating Element: PTC-semiconductor/ resistor, self-regulating with changing ambient temperaure (see graph in spec sheet)
Thermostat Range: 0 to 60°C (32 to 140°F)
Overheat Protection: Built-in temperature limit in case of fan failure
Function Control Light: LED
Housing: Plastic, UL94V-0
Dimensions: 165 H x 100 W x 128 mm D (6.5 x 3.94 x 5")
Connection: 2-pole terminal, 2.5 mm2 (AWG 14 max)
Mounting: Clip for 35 mm DIN rail (EN 50022)
Protection Class: II (double insulated)
Protection Type: NEMA 2 (IP20)
Axial Fan (Ball Bearing):
    CR02702700900,CR02702700901: 35 m3/h (20 cfm)
    CR02702701900, CR02702701901: 45 m3/h (26 cfm)
Max Current (Inrush):
    CR02702700900, CR02702700901: 14 A
    CR02702701900, CR02702701901: 15 A
    CR02702700900, CR02702700901: 0.9 kg (2 lb)
    CR02702701900, CR02702701901: 1.1 kg (2.4 lb)
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