SK3105.380 Rittal Enclosure heater 250/265 W 230 V 1~ 50/60 Hz WHD: 103x200x103mm

Why Choose the Rittal SK 3105.380 Enclosure Heater with Fan?

The Rittal SK 3105.380 is a compact PTC enclosure heater with an integrated fan, designed to regulate relative humidity, prevent temperatures from falling below the dew point and reduce condensation inside electrical enclosures. With a continuous thermal output of 250–265 W at 10 °C, it provides effective climate control for industrial control cabinets and automation equipment.

Operating from a 230 V AC single-phase supply at 50/60 Hz, the SK 3105.380 combines a self-regulating PTC heating element with forced air circulation. The integrated fan distributes heated air throughout the enclosure more effectively than natural convection alone, helping create a more uniform internal temperature and protecting sensitive electrical and electronic equipment against condensation-related damage.

Measuring just 103 × 200 × 103 mm (W × H × D), the heater delivers substantial heating capacity from a compact footprint. Its anodised aluminium construction, IP20 protection and Class II all-insulated design make it a practical solution for professional industrial enclosure climate-control installations.

Key Advantages

• Compact PTC enclosure heater with integrated fan.
• 250–265 W continuous thermal output at 10 °C.
• Designed for a 230 V AC, single-phase supply.
• Compatible with both 50 and 60 Hz power systems.
• Integrated fan improves warm-air distribution throughout the enclosure.
• Helps prevent temperatures from falling below the dew point.
• Reduces the risk of condensation, corrosion and electrical short circuits.
• Compact 103 × 200 × 103 mm dimensions minimise installation space.
• Wide -33 to +65 °C operating temperature range.
• Class II all-insulated construction for electrical protection.

Key Features

• Rittal SK enclosure climate-control series.
• PTC heater with integrated fan.
• 250–265 W continuous thermal output at 10 °C.
• 230 V AC, 1-phase, 50/60 Hz rated supply.
• Forced-air heating for improved internal air circulation.
• Anodised aluminium construction.
• IP20 protection to IEC 60529.
• Protection Class II, all-insulated.
• 4 A miniature circuit-breaker or fuse pre-fuse requirement.
• Operating temperature range from -33 to +65 °C.
• Suitable for thermostat or hygrostat-controlled enclosure heating.
• Supplied with PTC heater, integrated fan and assembly parts.

Forced-Air Heating for Reliable Condensation Control

Condensation can form inside electrical enclosures when internal components and surfaces fall below the dew point. The Rittal SK 3105.380 helps counter this by generating heat and using its integrated fan to circulate warmed air throughout the cabinet, helping regulate relative humidity and reduce the risk of corrosion or electrical short circuits.

For precise enclosure temperature control, Rittal recommends combining the heater with a suitable thermostat. Where condensation prevention is the primary requirement, a hygrostat can be used to regulate heating according to humidity conditions. This allows the SK 3105.380 to form part of a controlled enclosure climate-management system rather than operating unnecessarily when heating is not required.

Typical Applications

• Industrial electrical control panels.
• PLC and factory automation enclosures.
• Machine-control cabinets.
• Power distribution enclosures.
• Switchgear and controlgear installations.
• Process-control and instrumentation cabinets.
• Industrial enclosures exposed to temperature fluctuations.
• Applications requiring forced-air heating and condensation prevention.