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Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →Clear out junk files and repair common Windows errorsFree Scan →Scan for outdated or missing drivers - takes under a minuteDriver Scan →Choose a Rittal enclosure heater by matching the exact article number to the enclosure’s heat and condensation-control needs, available supply, and installation space—not by choosing the highest wattage. Rittal offers models with and without fans; its published figures vary by model. For temperature regulation, Rittal recommends a thermostat, and for condensation prevention it recommends a hygrostat.
What Rittal enclosure heaters are designed to do
Rittal describes its enclosure heaters as a way to regulate relative humidity and prevent enclosure temperatures from falling below the dew point. The aim is to reduce condensation and its potential consequences, including corrosion and electrical short circuits. This is the manufacturer’s stated intended use, not a guarantee of results in every installation. Rittal’s product page for article 3105.370
Which Rittal heater configurations are available?
Rittal lists enclosure heaters both without a fan and with a fan. The fan-assisted product material covers models with continuous thermal outputs from 235 W to 800 W, depending on the article number. That range alone does not establish that a fan model is better: suitability depends on the enclosure and its installation. Rittal’s fan-assisted enclosure-heater product material
Heaters without a fan
The no-fan range includes multiple output and voltage options. Rittal’s instruction table lists selected models with outputs from 18–20 W through 130–150 W, as well as 230 V models rated up to 800/810 W. These are not interchangeable range-wide specifications: check the entry for the exact article number. The cited instruction table reports continuous output for the no-fan models at an ambient temperature of 10 °C. Rittal instruction table
#1 Best Overall
- Rittal's panel heaters are the ideal way to regulate the internal conditions of your enclosure
- Advanced PTC technology allows the heater to self-regulate its operation only using energy when required
- Used in conjunction with available thermostats and hygrostats, humidity, condensation and temperature are all accurately controlled
- 110 - 240V AC/DC Rated operating voltage
- Measures 2" width by 5" height by 2" depth
Heaters with a fan
Fan-assisted models 3105.380–3105.430 have published continuous thermal outputs from 235 W to 800 W, depending on the model. In Rittal’s instruction table, models 3105.380–3105.400 are listed at 230 V, while 3105.410–3105.430 are listed at 115 V. Verify the required voltage and the full specifications for the specific model before ordering or installation. Rittal instruction table
Example specifications: Rittal 3105.370
Article 3105.370 (also styled 3105370 on Rittal’s product page) is one example of a no-fan heater. Rittal lists a continuous thermal output of 130–150 W at 10 °C, a supply range of 110–240 V at 50/60 Hz, IP20 protection, a 4 A pre-fuse, and dimensions of 90 × 180 × 75 mm. These specifications apply to this article, not to all Rittal heaters. Rittal 3105.370 product page
How to choose a model for an enclosure
- Define the goal and conditions. Establish the enclosure’s operating conditions and the temperature or humidity-control objective. The cited Rittal materials do not provide a universal wattage calculator, so they do not establish a single output suitable for every enclosure.
- Compare the exact model’s output. Use the continuous thermal output shown for the article number you are considering, and retain any stated measurement condition. For the cited no-fan instruction table, output ratings are measured at an ambient temperature of 10 °C.
- Check electrical compatibility. Confirm nominal supply voltage and frequency, and the required pre-fuse, against the exact model documentation and the installation’s electrical supply.
- Check fit and protection. Confirm dimensions and protection category against the available mounting space and the enclosure’s installation conditions. Do not assume another model in the same range has the same rating or size.
- Decide whether a fan is suitable. Compare the model’s output and configuration with the enclosure and installation requirements. Rittal’s product material identifies both configurations but does not declare a universal winner.
- Choose a control strategy. Rittal recommends a thermostat for precise temperature control and a hygrostat to regulate heating for condensation prevention. Select control equipment appropriate to the intended operating goal.
- Plan distribution in a large enclosure. Rittal says several low-output heaters are best for even heat distribution in larger enclosures; consider this rather than assuming one high-output heater will distribute heat evenly.
- Review the installation documents. Check the relevant product instructions, approvals, and applicable local electrical requirements. Manufacturer product data is not a site-specific engineering assessment.
Model figures at a glance
| Configuration or model | Published details | What to verify |
|---|---|---|
| No fan, article 3105.370 | 130–150 W continuous output at 10 °C; 110–240 V, 50/60 Hz; IP20; 4 A pre-fuse; 90 × 180 × 75 mm. Rittal product page | Confirm article number, current specifications, fit, and electrical compatibility. |
| No-fan range | Selected instruction-table entries include outputs of 18–20 W, 49–50 W, 63–75 W, 86–100 W, and 130–150 W; the table also includes 230 V models up to 800/810 W. Output basis for the cited no-fan entries is 10 °C ambient. Rittal instruction table | Match the output and voltage to the precise article number; do not treat the range as one specification. |
| With fan, articles 3105.380–3105.430 | 235–800 W continuous output depending on model. The instruction table lists 230 V for 3105.380–3105.400 and 115 V for 3105.410–3105.430. Rittal fan-assisted product material Rittal instruction table | Check exact output, voltage, and remaining model-specific installation details. |
Availability and current documentation
Rittal product status and specifications, as well as purchasing channels, may change. Regional catalog information is not proof of stock at a particular seller. Before purchase, confirm the exact article number and current Rittal documentation, then check the seller’s current listing. The cited product information does not establish retail availability or price.
Quick Recap
Best Value
- Thermostat for fans and heaters
- Ideal for controlling filter fan units, heaters and heat exchangers, this thermostat can also be used as a signal generator for monitoring the enclosure internal temperature
- Bi-metal sensor as a temperature-sensitive element with thermal feedback
- Time-saving connection technique using a terminal strip with a screw connection from the outside
- Measures 2-3/4" width by 2-3/4" height by 15/16" depth
Rank #3
- Rittal's panel heaters are the ideal way to regulate the internal conditions of your enclosure
- Advanced PTC technology allows the heater to self-regulate its operation only using energy when required
- Used in conjunction with available thermostats and hygrostats, humidity, condensation and temperature are all accurately controlled
- 110 - 240V AC/DC Rated operating voltage
- Measures 4" width by 7" height by 3" depth
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
