Enclosure heater Rittal 3105.330

The Rittal 3105.330 enclosure heater is a PTC heater without a fan, designed to provide continuous thermal output in the range of 10–150 W. It operates from 110–240 V, 50–60 Hz, with a maximum current of 4 A and compact dimensions (64 mm × 56 mm × 155 mm). The heater is intended to maintain stable internal temperatures inside electrical enclosures, reduce condensation and moisture-related risks, and protect sensitive electronic components.

Advantages

The heater delivers a stable continuous thermal output between 10 and 150 W using a PTC element, requires no fan for operation, and includes a quick-connection terminal for straightforward electrical installation. Its wide input voltage range (110–240 V) and compact size allow use in many enclosure types while helping to prevent condensate and corrosion on internal components.

Suitable for

Key specifications

How to use

Mount the heater inside the enclosure following manufacturer clearances and secure it mechanically. Connect the supply to the quick-connection terminal according to the enclosure wiring standards and ensure correct voltage (110–240 V). Position the unit to allow unobstructed heat dispersion inside the cabinet. Verify operation after power-up and monitor enclosure temperature to confirm condensation prevention.

Recommendations

For reliable performance, use the Rittal 3105.330 in enclosures of appropriate size and with proper ventilation paths; avoid covering the heater or placing combustible materials against it. Regularly inspect electrical connections and the enclosure interior for signs of moisture or damage.