Rittal SK3387.540 TopTherm Blue e roof-mounted enclosure cooling unit with 3.8 kW cooling capacity, 400/460 V three-phase supply, integrated e-Comfort controller and electrical condensate evaporation for industrial enclosure climate control.
£3,924.45
The Rittal SK3387.540 is a high-performance TopTherm Blue e roof-mounted enclosure cooling unit designed to provide reliable climate control for electrical and industrial control enclosures. As part of the proven Rittal Blue e cooling unit series, it combines efficient refrigeration technology with an integrated e-Comfort controller and automatic electrical condensate evaporation.
Designed for demanding industrial environments, the SK3387.540 provides dependable cooling for sensitive electrical and electronic equipment while helping maintain stable enclosure temperatures. Its roof-mounted configuration saves valuable enclosure wall space, while the hydrophobic RiNano-coated condenser supports efficient operation and reduced maintenance requirements.
With a total cooling output of 3.8 kW at 50 Hz and up to 4 kW at 60 Hz, together with a 400 V three-phase 50 Hz or 460 V three-phase 60 Hz supply, the SK3387.540 is well suited to industrial control panels, automation systems and machinery containing heat-generating electrical components.
Industrial electrical enclosures often contain PLCs, variable speed drives, power supplies and other components that generate significant heat during operation. The Rittal SK3387.540 removes this excess heat and maintains controlled internal temperatures, helping protect sensitive equipment from thermal stress and supporting reliable machine operation.
The Blue e design combines powerful refrigeration with an e-Comfort controller, electrical condensate evaporation and separate internal and external air circuits. The roof-mounted format is particularly useful where enclosure side walls must remain unobstructed, while the unit's IoT connectivity options allow integration into modern monitoring and maintenance strategies.
| Manufacturer | Rittal |
|---|---|
| Series | TopTherm Blue e |
| Model | SK3387.540 |
| Article number | SK 3387.540 |
| Product type | Roof-mounted enclosure cooling unit |
| Mounting type | Roof-mounted |
| Material | Sheet steel |
| Colour | RAL 7035 |
| Total cooling output L35 L35 / 50 Hz | 3.8 kW |
| Total cooling output L35 L35 / 60 Hz | 4 kW |
| Total cooling output L35 L50 / 50 Hz | 3.05 kW |
| Total cooling output L35 L50 / 60 Hz | 3.3 kW |
| Rated operating voltage | 400 V, 3~, 50 Hz / 460 V, 3~, 60 Hz |
| Rated current max. at 50 Hz | 4.1 A |
| Rated current max. at 60 Hz | 4.5 A |
| Start-up current max. at 50 Hz | 17 A |
| Start-up current max. at 60 Hz | 19 A |
| Power consumption L35 L35 / 50 Hz | 1.7 kW |
| Power consumption L35 L35 / 60 Hz | 2.03 kW |
| Power consumption L35 L50 / 50 Hz | 1.84 kW |
| Power consumption L35 L50 / 60 Hz | 2.31 kW |
| External air throughput | 3,870 m³/h |
| Internal air throughput | 1,420 m³/h |
| Protection rating, external circuit | IP34 |
| Protection rating, internal circuit | IP54 |
| Operating temperature range | +10 °C to +55 °C |
| Storage temperature range | -40 °C to +70 °C |
| Controller setting range | +20 °C to +55 °C |
| Temperature control | e-Comfort controller, factory setting +35 °C |
| Refrigerant | R-513A |
| Refrigerant quantity | 1.8 kg |
| Permissible operating pressure | 28 bar |
| Pre-fuse / motor circuit-breaker | 6.3–10 A |
| Duty cycle | 100 % |
| Electrical connection | Plug-in terminal strip |
| Dimensions (W × H × D) | 796 × 470 × 580 mm |
| Net weight | 73.15 kg |
| EAN | 4028177323322 |
The SK3387.540 is a roof-mounted cooling unit designed to remove heat from industrial electrical and control enclosures, helping maintain suitable operating temperatures for sensitive electrical and electronic equipment.
The unit provides a total cooling output of 3.8 kW at L35 L35 / 50 Hz and 4 kW at 60 Hz.
The cooling unit is designed for a 400 V three-phase 50 Hz supply or a 460 V three-phase 60 Hz supply.
The SK3387.540 has an IP34 external circuit and an IP54 internal circuit protection category to IEC 60529.
Yes. It includes an integrated e-Comfort controller with a factory setting of +35 °C and an adjustable setting range from +20 °C to +55 °C.
Rittal TopTherm Blue e cooling units are engineered for dependable enclosure climate control, combining efficient cooling, intelligent temperature regulation and practical installation features for industrial automation and electrical applications.
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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...