Seifert Systems Outdoor Series (OC): Precision Cooling for Enclosures in Outdoor Environments

In industrial and commercial settings where electrical enclosures are exposed to outdoor conditions, maintaining optimal internal temperatures is critical. The Seifert Systems Outdoor Series (OC) offers a robust and efficient solution for precision cooling, specifically engineered to withstand the rigors of outdoor environments. With cooling capacities ranging from 290 W to 6 kW, the OC series is versatile enough to support a wide range of applications — from compact control panels to large-scale automation systems.

Advanced Refrigerant Technology: R513a

One of the standout features of the OC range is its adoption of R513a refrigerant, a globally accepted, low-GWP (Global Warming Potential) alternative to R134a. R513a is a non-flammable, azeotropic blend of R134a and R1234yf, offering similar performance characteristics to R134a but with a significantly reduced environmental impact. With a GWP of approximately 573, R513a aligns with international sustainability goals and upcoming refrigerant regulations, making the OC series a future-proof choice for environmentally conscious operations.

Durable Construction for Demanding Conditions

The OC series is available in three housing material options to suit different environmental challenges:

• RAL7035 Mild Steel (Powder-Coated): Ideal for general outdoor use, offering a cost-effective balance of durability and corrosion resistance.
• Stainless Steel 304 (AISI 304 / V2A): Suitable for moderately corrosive environments such as coastal or urban areas.
• Stainless Steel 316 (AISI 316 / V4A): Designed for highly corrosive environments including marine, petrochemical, and food processing industries.

All units are built to IP56 protection standards, ensuring resistance to dust ingress and powerful water jets. This makes them suitable for installation in areas exposed to rain, snow, and airborne contaminants.

Electrical Compatibility and Flexibility

Seifert’s OC cooling systems are available in 120V single-phase, 230V single-phase, 400V two-phase and 400V three-phase configurations, allowing for seamless integration into diverse electrical infrastructures. This flexibility ensures compatibility with global standards and simplifies deployment across different regions and industries.

Standard Features for Enhanced Performance

Each OC unit is equipped with a comprehensive set of features designed to maximize performance, reliability, and ease of maintenance:

• Integrated Enclosure Heater: Prevents condensation and maintains internal temperature during cold weather, protecting sensitive electronics from moisture damage.
• Aluminium Filter: Captures airborne particles and debris, ensuring clean airflow and reducing maintenance frequency.
• Condensate Evaporation System: Built-in evaporation eliminates the need for external drainage, simplifying installation and reducing service requirements.
• Digital Controller with Rear Display: Allows for precise temperature regulation and diagnostics. Some models support remote monitoring via Modbus communication.
• Hermetically Sealed Cooling Circuit: Ensures long-term reliability and minimizes the risk of refrigerant leakage.
• Virtually Maintenance-Free Operation: Designed for minimal upkeep, ideal for remote or hard-to-access installations.

Performance Across Extreme Conditions

The OC series is engineered to operate efficiently across a wide ambient temperature range of -40°C to +55°C, ensuring year-round performance in both freezing and sweltering conditions. The cooling function is regulated by a sensor that monitors the internal temperature of the enclosure. Depending on the heat load, the compressor and ambient air fan activate as needed, while the internal fan runs continuously to maintain even air distribution.

Applications

The OC range is suitable for a wide variety of outdoor applications, including:

• Telecommunications Infrastructure: Protects sensitive networking equipment in remote or exposed locations.
• Transportation and Rail Systems: Ensures reliable operation of signaling and control systems in all weather conditions.
• Renewable Energy Installations: Maintains optimal performance of inverters and control panels in solar and wind energy systems.
• Food and Beverage Industry: Stainless steel variants are ideal for hygienic environments and washdown areas.
• Petrochemical and Marine Environments: 316 stainless steel models withstand aggressive corrosion and salt spray.

Certifications and Compliance

Seifert’s OC cooling systems meet a range of international safety and performance standards:

• CE
• cURus and cULus (UL File Numbers: SA32278, E498756)
• NEMA / UL Type 4X compliance for stainless steel models

These certifications ensure that the units meet stringent requirements for electrical safety, environmental protection, and operational reliability.

Conclusion

The Seifert Systems Outdoor Series (OC) range represents a high-performance, environmentally responsible solution for outdoor enclosure cooling. With a broad cooling capacity spectrum, rugged construction options, and intelligent control features, these units are purpose-built to safeguard critical electronics in the most challenging environments. Whether deployed in industrial automation, telecommunications, or renewable energy, the OC series delivers peace of mind through precision, protection, and performance.