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PTC Fan Heater

CR 027 | 400 – 650 WPTC Fan Heater

Moisture build-up is not only a nuisance in outdoor or poorly insulated enclosures, it can also be problematic in highly-protected, well-sealed enclosures. The semiconductor CR 027 PTC fan heater prevents the formation of condensation and ensures an even temperature in any enclosure.

The integrated thermostat is used to set the desired temperature while the high performance axial fan provides forced air circulation. The CR 027 is also available with an option for a continuously running fan.

ISC has a wide variety of heaters available, specifically designed to protect enclosures from condensate formation. Request a quote online or call to have an enclosure specialist help you find the perfect unit for your application.

DownloadPTC Fan Heater CR 027 Brochure


  • Compact fan heater
  • Heating power adjusts to ambient temperature
  • Integrated adjustable thermostat
  • Built-in overheat protection
  • DIN rail mountable


Heating elementPTC resistor - temperature limiting
Overheat protectionbuilt-in temperature limiter
Axial fan, ball bearingservice life 50,000h at 77°F (25°C)
Airflow, free blowingsee table below
Connection2-pole terminal AWG 14 max. (2.5mm2), torque 0.8Nm max.
Housingplastic, UL 94V-0, light grey
Function control lightLED
Mountingclip for 35mm DIN rail, EN 60715
Mounting positionvertical
Operating/Storage temp-49 to +158°F (-45 to +70°C)
Dimensions6.5" x 3.94" x 5.0" (165 x 100 x 128 mm)
Protection classII (double insulated)
Protection typeIP20
ApprovalsUL File No. E204590, VDE, GOST TR


Available Models

ModelHeating capacity
(@ 50 Hz / 68ºF)
Heating capacity
(@ 60 Hz / 68ºF)
Max. Current
Air flow,
free blowing
Setting Range
02700.0-00475 W550 WAC 220-240 V11.0 A20 cfm0 to 60 °C2.0 lbs
02700.9-00400 W550 WAC 100-120 V14.0 A20 cfm32 to 140 °F2.0 lbs
02701.0-00550 W650 WAC 220-240 V13.0 A26 cfm)0 to 60 °C2.4 lbs
02701.9-00510 W650 WAC 100-120 V15.0 A26 cfm32 to 140 °F2.4 lbs

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