Rittal Blue e+ SK3189.940 is a high-performance wall-mounted enclosure cooling unit providing approximately 5.8 kW cooling capacity with hybrid Blue e+ technology, IP55 internal circuit protection and robust sheet-steel construction.
£5,869.14
The Rittal Blue e+ SK3189.940 is a high-performance wall-mounted enclosure cooling unit designed for efficient thermal management of industrial electrical and electronic enclosures. Part of the advanced Rittal Blue e+ climate control range, it combines intelligent cooling technology with robust sheet-steel construction and precise temperature control for demanding machinery and automation applications.
The SK3189.940 provides approximately 5.8 kW cooling output, making it suitable for larger control cabinets with substantial internal heat loads from variable speed drives, power electronics, PLC systems and other industrial equipment. Blue e+ hybrid technology combines a passive heat pipe with an active refrigerant circuit, allowing the unit to adapt its cooling operation to actual thermal demand and helping reduce energy consumption.
Designed for wall mounting, the SK3189.940 features a robust sheet-steel housing with a depth of 393 mm. The internal cooling circuit provides IP55 protection, maintaining separation between enclosure and ambient air to help protect sensitive components against dust, moisture and contaminants present in industrial environments.
Industrial control cabinets containing high-power drives, power electronics and automation equipment can generate significant amounts of heat. The Rittal Blue e+ SK3189.940 transfers this heat away from the enclosure while maintaining separate internal and external air circuits, helping preserve the protected internal environment required by sensitive electrical components.
Blue e+ hybrid technology combines passive heat pipe cooling with an active refrigerant circuit. When ambient conditions permit, the heat pipe can contribute to heat removal with low energy consumption, while active cooling provides additional capacity as thermal demand increases. This demand-based approach helps improve overall energy efficiency compared with conventional fixed-output enclosure cooling systems.
| Manufacturer | Rittal |
|---|---|
| Series | Blue e+ |
| Model | SK3189.940 |
| Product type | Wall-mounted enclosure cooling unit |
| Cooling output | approx. 5.8 kW |
| Cooling principle | Hybrid heat pipe and active refrigerant circuit |
| Protection rating | IP55 internal circuit |
| Material | Sheet steel |
| Mounting type | Wall-mounted |
| Depth | 393 mm |
| Air circuits | Separate internal and external circuits |
| Temperature control | Intelligent Blue e+ controller |
| Application | Industrial enclosure climate control |
The SK3189.940 is a wall-mounted industrial cooling unit designed to remove excess heat from electrical and electronic enclosures while maintaining a controlled internal environment for sensitive equipment.
The SK3189.940 provides approximately 5.8 kW of cooling capacity, making it suitable for industrial enclosures with substantial internal heat loads.
The internal air circuit provides IP55 protection, helping protect enclosure-mounted equipment against the ingress of dust, moisture and contaminants.
Blue e+ technology combines a passive heat pipe with an active refrigerant circuit, allowing cooling performance to adapt to operating conditions and reducing the need for continuous compressor operation.
The SK3189.940 is designed for wall mounting on industrial electrical enclosures and is particularly suitable for control cabinets containing drives, power electronics and automation equipment with high heat loads.
Rittal Blue e+ climate control solutions are widely used by panel builders, machine builders and automation engineers seeking intelligent, energy-efficient and dependable thermal management for industrial electrical enclosures.
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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...