RITTAL SK 3105.370

Rittal SK 3105.370 Enclosure Heater

Description

The Rittal SK 3105.370 is a high-performance enclosure heater from the TopTherm series, designed to maintain stable internal temperatures and prevent the formation of condensation in electrical and electronic enclosures. Its self-regulating PTC technology ensures energy-efficient operation and enhanced safety by preventing overheating. The compact aluminum profile allows for excellent heat dissipation through natural convection.

Specifications

• Manufacturer: Rittal
• Type: SK 3105.370
• Rated Operating Voltage: 110 V – 240 V AC, 50/60 Hz
• Continuous Thermal Output: 130 W to 150 W
• Heating Element: PTC (Positive Temperature Coefficient)
• Connection: 3-pole quick-connection terminal
• Material: Anodised Aluminium Profile
• Mounting: Snap-fastening for 35 mm support rail EN 50 022
• Protection Category: IP20

Label Info

• Model: SK 3105.370
• Voltage: 110-240V
• Power: 130-150W
• EAN: 4028177638679

Application

This heater is ideal for use in control cabinets and enclosures that house sensitive equipment like PLCs, drives, and power supplies. It is particularly effective in environments with fluctuating ambient temperatures or high humidity, safeguarding components from moisture-related damage and ensuring system reliability.

Country of Origin

Made in Germany.

CO2 Impact

Opting for this component saves approximately 18.8 kg of CO2 compared to manufacturing a new one, contributing to a more sustainable industrial process.

Availability

This item is in stock and ready for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the primary function of the PTC heating element in this Rittal heater?

The PTC (Positive Temperature Coefficient) element is self-regulating. It increases its resistance as the temperature rises, which automatically limits the heat output and prevents overheating, ensuring both safety and energy efficiency without the need for a separate thermostat in some applications.

Can this SK 3105.370 heater be mounted in any orientation within the enclosure?

For optimal performance and safety, Rittal recommends mounting the heater vertically with the connection terminals at the bottom. This orientation ensures natural convection, allowing cool air to be drawn in from below and warm air to rise and circulate effectively throughout the cabinet.

Is an external thermostat required to operate this heater?

While the PTC element provides self-regulation, for precise temperature control within the enclosure, it is highly recommended to use this heater in conjunction with a separate thermostat (e.g., Rittal SK 3110.000) or a hygrostat. This allows you to set a specific temperature threshold for activation, optimizing energy consumption and protection.

Last Update: Friday, March 13, 2026

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