Rittal SK3105.390 is a compact 230 V single-phase enclosure heater with an integrated fan, providing 400-415 W continuous thermal output at 10 °C to regulate enclosure temperature and help prevent condensation.
£227.07
The Rittal SK3105.390 is a high-output enclosure heater with integrated fan, designed to regulate relative humidity, maintain suitable internal temperatures and help prevent condensation inside electrical and industrial enclosures. By keeping temperatures above the dew point, the heater helps protect electrical and electronic components against moisture-related corrosion and short-circuit damage.
Providing a continuous thermal output of 400-415 W at 10 °C, the SK3105.390 combines a PTC heating element with an integrated fan to distribute warm air throughout the enclosure. The fan-assisted design is particularly suitable for applications requiring effective heat circulation, helping reduce temperature differences around sensitive electrical, control and automation equipment.
The heater operates from a 230 V, 1~, 50/60 Hz supply and measures just 103 × 200 × 103 mm. It features a quick-connection terminal, IP20 protection, Class II all-insulated construction and an operating temperature range of -33 °C to +65 °C, providing a compact and practical climate-control solution for industrial enclosure installations.
Changes in ambient temperature can cause moisture to condense inside electrical enclosures when internal surfaces fall below the dew point. The Rittal SK3105.390 provides controlled heat to help maintain the enclosure temperature and regulate relative humidity, reducing the risk of condensation that could otherwise contribute to corrosion, insulation deterioration or electrical short circuits.
The integrated fan improves heat distribution around the enclosure, making this model particularly useful where higher heating output is required. Rittal recommends using a suitable thermostat for precise enclosure temperature control, while a hygrostat can be used when heating is primarily required to prevent condensation. In larger enclosures, multiple lower-output heaters may provide more even heat distribution depending on the installation requirements.
| Manufacturer | Rittal |
|---|---|
| Series | SK |
| Model | SK3105.390 |
| Article number | SK 3105.390 |
| Alternative SKU | 3105390 |
| Product type | Enclosure heater with fan |
| Heating technology | PTC heater with integrated fan |
| Continuous thermal output at 10 °C | 400-415 W |
| Rated operating voltage | 230 V, 1~ |
| Rated frequency | 50/60 Hz |
| Fan | Pre-integrated |
| Width | 103 mm |
| Height | 200 mm |
| Depth | 103 mm |
| Pre-fuse | 6 A miniature circuit-breaker/fuse |
| Protection rating | IP20 to IEC 60529 |
| Protection class | Class II, all-insulated |
| Operating temperature range | -33 °C to +65 °C |
| Net weight | 1 kg |
| Gross weight | 1.192 kg |
| EAN | 4028177662872 |
| Customs tariff number | 85162999 |
| ETIM 9 | EC000737 |
| ETIM 8 | EC000737 |
| ECLASS 8.0 | 27180710 |
| Approvals | CSA, UR + C-UR recognised |
| Pack quantity | 1 piece |
| Supply includes | PTC heater with fan and assembly parts |
The Rittal SK3105.390 is an enclosure heater with an integrated fan used to maintain suitable internal temperatures, regulate relative humidity and help prevent condensation inside electrical and industrial enclosures.
The SK3105.390 provides a continuous thermal output of 400-415 W at 10 °C, with the integrated fan helping distribute the generated heat throughout the enclosure.
The Rittal SK3105.390 operates from a 230 V single-phase AC supply at 50/60 Hz.
Yes. The SK3105.390 incorporates a pre-integrated fan that circulates heated air, helping achieve more effective heat distribution within the enclosure.
A suitable thermostat is recommended for precise enclosure temperature control. Where the primary objective is preventing condensation, a hygrostat can be used to regulate heating according to humidity conditions.
Rittal enclosure climate-control products provide dependable thermal management for industrial electrical and automation systems, helping protect sensitive equipment from condensation, temperature fluctuations and moisture-related damage while supporting reliable enclosure operation.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...