SK3303.518 Rittal RTT BLUE E WALL MOUNT COOLER 500W 115V, ECOMFORTCONTR., NEMA 3R/4, UL LISTED

Why Choose the Rittal SK3303.518 TopTherm Blue e Wall-Mounted Cooling Unit?

The Rittal SK3303.518 is an energy-efficient TopTherm Blue e wall-mounted enclosure cooling unit designed for reliable thermal management of industrial electrical and automation enclosures. With a cooling output of 0.5 kW at L35/L35, a 115 V single-phase, 60 Hz supply and an integrated e-Comfort controller, it provides precise temperature regulation for sensitive electrical and electronic equipment.

Designed for demanding indoor and outdoor applications, the SK3303.518 carries UL Type 3R, Type 4 and Type 12 protection classifications. Its separate internal and external air circuits help prevent contaminated ambient air from entering the enclosure, while the condenser incorporates Rittal's hydrophobic RiNano coating to support efficient operation and reduce maintenance requirements.

The cooling unit features a robust sheet steel housing finished in RAL 7035 and measures 285 mm wide × 620 mm high × 298 mm deep. Blue e technology, an e-Comfort controller and compatibility with the Rittal Blue e IoT adaptor make it a practical cooling solution for modern industrial control systems requiring dependable enclosure temperature management.

Key Advantages

• Energy-efficient Rittal TopTherm Blue e enclosure cooling technology.
• 0.5 kW cooling output at L35/L35 for industrial control enclosures.
• 115 V, single-phase, 60 Hz supply.
• Integrated e-Comfort controller for precise temperature regulation.
• UL Type 3R, Type 4 and Type 12 protection classifications.
• Suitable for outdoor siting in appropriate installations.
• Hydrophobic RiNano-coated condenser supports reliable performance and easier maintenance.
• Can be networked with the Rittal IoT Interface using a compatible Blue e IoT adaptor.

Key Features

• Rittal TopTherm Blue e wall-mounted cooling unit.
• 0.5 kW cooling output at L35/L35, 60 Hz.
• 0.28 kW cooling output at L35/L50, 60 Hz.
• 115 V AC, 1~, 60 Hz rated operating voltage.
• Maximum rated current of 5.7 A.
• External air circuit throughput of 345 m³/h.
• Internal air circuit throughput of 280 m³/h.
• Integrated e-Comfort temperature controller.
• Factory temperature setting of +35 °C.
• Temperature setting range of +20 to +50 °C.
• Operating ambient temperature range of -20 to +50 °C.
• Uses R-513A refrigerant.

Reliable Enclosure Cooling for Industrial Automation

Electrical enclosures containing drives, PLCs, power supplies and other electronic equipment can generate significant heat during continuous operation. The Rittal SK3303.518 uses a closed-loop refrigeration system to remove this heat while maintaining separation between the enclosure air and the surrounding environment, helping protect sensitive components from excessive temperatures and external contamination.

The integrated e-Comfort controller continuously manages enclosure temperature, while separate internal and external air circuits provide controlled heat transfer. Blue e technology and optional IoT connectivity make the unit well suited to modern automation installations where efficient cooling, temperature monitoring and dependable equipment availability are important.

Typical Applications

• Industrial electrical control enclosures.
• PLC and automation control cabinets.
• Variable frequency drive and motor control panels.
• Machine tool and production equipment enclosures.
• Outdoor industrial enclosure installations.
• Power electronics and control equipment cooling.
• Manufacturing and process automation systems.
• OEM machinery requiring controlled enclosure temperatures.