enclosure heater CS 028 / CSL 028 by STEGO


CS 028 / CSL 028 | 150 W to 400 W
This compact enclosure heater with fan and PTC heating element prevents condensation inside control cabinets with high component densitiy. The touch-safe plastic casing ensures the safety of users by protecting against heat.
  • PTC heating element: temperature-limiting, dynamic response behaviour
  • Touch-safe heat protection
  • Can be mounted by screw and clip onto DIN rail 35 mm
  • Electrical connection using cage clamps
  • Temperature monitor to prevent overheating

Overview Technical Data

PTC resistor - temperature limiting
air flow, free flow
CS 028: 13.8 m³/h
CSL 028: 45 m³/h (230 VAC), 54 m³/h (120 VAC)
service life 40,000 h at +40 °C (+104 °F)
2-pole clamp max. 2.5 mm² (CSL 028 with strain relief),clamping screw torque 0.8 Nm max.
plastic according to UL94 V-0, black
clip for 35 mm DIN rail, EN 60715 or screw fixing (Ø 5.3 mm)
vertical airflow (air outlet up)
see drawings
-45 to +70 °C (-49 to +158 °F)
< 90 % RH (non-condensing)
IP20 / II (double insulated)
other voltages on request

Product Variants

Notice: Heating capacity at +20°C (+68°F) ambient temperature

Summary of your request

Art. No. Connection casing Casing Productname Series Heating element Heater body Model Axial fan Operating voltage Operating voltage
Operating voltage
Voltage type Frequency Heating capacity Inrush current
Surface temperature Rec. pre-fuse
T (time-delay)
Connection Connection PE Air outlet temperature Switch-off temperature Switch-off temperature 2 Switch-on temperature Switch-on temperature 2 Drilling template Operating temperature Flow rate,
free flow
Flow rate,
with filter
Setting range Setting range 2 Current
Nominal current
of socket
Average noise level Enclosure cut-out Enclosure cut-out Storage temperature Storage humidity Ambient temperature Operating humidity Speed Switching capacity
Switching current
Load resistance (external) External Sensor Measuring range Measuring range 2 Note Note 2 Note 3 Note 4 Reaction time Contact type Service life Operation indicator Control contact -
Signal current
Electrical protection Switch Socket Material Material sealing Air permeability Mounting Air intake/Air outlet Filter material Measuring signal Switch temperature
Lamp type Luminous flux Light colour Length / Depth Width Height Diameter Installation depth Fitting position Mounting frame Weight Sensor element Protection class Protection type Protection type UL VDE UL EAC METRO ATEX Ex Protection type Gases Ex Protection type Mine applications Ex Protection type Dusts Temperature class Temperature safety
Accessory Accessory 2 Accessory 3 Accessory 4 Art. No. Accessory Art. No. Accessory 2 Art. No. Accessory 3 Art. No. Accessory 4 Catalogue Article CAD

Airduct for CSL 028


Packing unit

Weight (approx.)
85 x 85 x 12 mm
according to UL94 V-0, black
1 piece
35 g
² Dimensions when mounted on fan heater.

Your product inquiry

Your direct contact

STEGO Elektrotechnik GmbH
Kolpingstraße 21
74523 Schwäbisch Hall