Rittal SK 3118.000 enclosure hygrostat with an adjustable 50–100% relative humidity range, designed to control heaters and fans to help prevent condensation inside industrial electrical enclosures.
£113.63
The Rittal SK 3118.000 is a compact and reliable enclosure hygrostat designed to control relative humidity inside industrial electrical enclosures and help prevent condensation on sensitive assemblies and electronic components. It can switch connected enclosure heaters and/or fans when the preset relative humidity threshold is exceeded, helping maintain suitable environmental conditions for installed equipment.
With an adjustable 50–100% relative humidity setting range and an approximate 4% switching difference, the SK 3118.000 provides straightforward humidity-dependent control without requiring a complex electronic control system. Its single-pole change-over quick-break contact allows suitable climate-control equipment to be switched automatically in response to changing enclosure conditions.
The compact 71 × 71 × 33.5 mm housing is designed for flexible installation on a vertical or horizontal 35 mm support rail to EN 50 022, with alternative snap fastening possible using the supplied adaptor. Its broad electrical compatibility makes the SK 3118.000 suitable for a wide range of industrial control panels and machinery enclosures.
Humidity inside an electrical enclosure can lead to condensation when environmental conditions change, potentially affecting electrical connections, electronic assemblies and other sensitive components. The Rittal SK 3118.000 provides automatic humidity-dependent switching so that suitable heating or ventilation equipment can be activated when the preset relative humidity level is exceeded.
By controlling a heater and/or fan, the hygrostat helps reduce relative humidity and minimise the risk of condensation. Its mechanical switching arrangement, adjustable humidity setting and flexible mounting options make it particularly suitable for industrial control panels, switchgear, machinery enclosures and automation installations.
| Manufacturer | Rittal |
|---|---|
| Series | SK Climate Control Accessories |
| Model | SK 3118.000 |
| Product type | Enclosure hygrostat |
| Setting range | 50–100% relative humidity |
| Switching difference | approx. 4% |
| Contact configuration | Single-pole change-over contact, quick-break |
| Permissible AC contact load | 5 A; 0.2 A inductive load at cos φ = 0.6 |
| Permissible DC contact load | max. 20 W |
| Rated operating voltage | 24–230 V AC, 1~; 12–75 V DC |
| Mounting | Vertical or horizontal 35 mm support rail to EN 50 022 / snap fastening with adaptor |
| Dimensions (W × H × D) | 71 × 71 × 33.5 mm |
| Depth | 33.5 mm |
| Colour | RAL 7035 |
| Weight | approx. 0.1 kg |
| Pack quantity | 1 |
| EAN | 4028177036734 |
The Rittal SK 3118.000 is used to monitor relative humidity and switch a connected heater and/or fan when the preset humidity level inside an electrical enclosure is exceeded, helping prevent condensation.
The Rittal SK 3118.000 has an adjustable setting range of 50–100% relative humidity, with an approximate switching difference of 4%.
The SK 3118.000 is designed for a broad range of industrial electrical systems, with rated operating voltage versions specified for 24–230 V AC, single-phase and 12–75 V DC.
The hygrostat can be mounted vertically or horizontally on a 35 mm support rail to EN 50 022. Snap fastening in a suitable enclosure section or on a mounting plate is also possible using the supplied adaptor.
When relative humidity rises above the selected threshold, the hygrostat switches connected climate-control equipment such as a heater and/or fan. This helps reduce relative humidity and prevents condensation from forming on assemblies and electronic components.
Rittal SK climate-control components are designed for dependable environmental management inside industrial electrical enclosures, helping machine builders, panel builders and automation engineers protect sensitive equipment against temperature, humidity and condensation-related problems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...