Rittal 3105 Series PTC Enclosu...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$586.61
Rittal 3105 Series PTC Enclosure Heater with Integrated Fan, IP 20

Rittal 3105 Series PTC Enclosure Heater with Integrated Fan, IP 20

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Model: 3105390

In Stock (leaves warehouse same day if ordered before 3pm ET)

$586.61
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Rittal 3105 Series PTC Enclosure Heater with Integrated Fan, IP 20

The Rittal 3105 Series PTC Enclosure Heater with Integrated Fan is engineered to regulate relative humidity, prevent internal enclosure temperatures from dropping below the dew point, and stop condensation from forming inside electrical enclosures. This fan-assisted heater delivers a continuous thermal output of 235 - 800 W (235 W/250 W at 10 °C) and is available in 115V or 230V, 1~, 50 Hz/60 Hz configurations to match your facility's supply. Built with a plastic housing and Protection Class II (total insulation) design rated IP 20, it helps guard against the corrosion and electrical short circuits that condensation can cause inside panels and cabinets.

Key Features

  • Continuous Thermal Output: Delivers 235 - 800 W of continuous thermal output (235 W/250 W at 10 °C) for reliable enclosure heating and condensation prevention.
  • Integrated Fan: Fan-assisted PTC heater version circulates warm air for even heat distribution inside the enclosure.
  • Durable Construction: Plastic housing with Protection Class II (total insulation) for added safety.
  • Available Voltages: Offered in 115V or 230V, 1~, 50 Hz/60 Hz configurations to suit standard single-phase power connections.
  • Protection Rating: IP 20 to both IEC 60 529 and EN 60 529.
  • Operating Temperature Range: -33 °C to 65 °C for a wide range of ambient conditions.
  • Integrated Pre-Fuse: Miniature circuit-breaker/fuse rated 4A for circuit protection.

Certifications & Compliance

  • IP 20 per IEC 60 529 and EN 60 529
  • Protection Class II (Total Insulation)

Technical Specifications

  • Integrated Fan: Yes
  • Protection Category (IEC 60 529): IP 20
  • Protection Category (EN 60 529): IP 20
  • Material: Plastic
  • Protection Class: II (Total Insulation)
  • Operating Temperature Range: -33 °C to 65 °C
  • Pre-Fuse: Miniature circuit-breaker/fuse, 4A
  • Rated Operating Voltage: 115V or 230V, 1~, 50 Hz/60 Hz

Typical Applications

  • Electrical Enclosures and Control Cabinets
  • Industrial Automation and Machine Control Panels
  • Outdoor and Unconditioned Equipment Enclosures
  • Condensation and Corrosion Prevention in Panels
  • Cold-Climate and Low-Temperature Installations

Why Rittal?

Rittal builds the 3105 Series PTC Enclosure Heater with a durable plastic housing, Protection Class II total insulation, and an IP 20 rating to deliver dependable, code-conscious climate control inside electrical enclosures. The fan-assisted design and 235 - 800 W continuous thermal output range help installers match heating capacity to enclosure size, while the integrated 4A pre-fuse simplifies a safe, professional installation across both 115V and 230V systems for industrial and commercial applications.

Manufacturer Resources

Rittal Product Catalog

Product Specs

Product Type:
Enclosure Climate Control
Product Material:
Plastic
Configuration:
With Integrated Fan
Department:
Electrical
Product Group:
Boxes & Enclosures
Voltage Rating:
115/230V
Amperage Rating:
4A
Standards:
IP 20
Series:
3105
Product Subgroup:
Enclosure Accessories

Rittal 3105390 – Frequently Asked Questions

1) Which Rittal 3105 heater part number do I order for 115V versus 230V?
Two voltages are offered on the Rittal 3105 Series PTC enclosure heater: order MPN 3105410 for 115V and MPN 3105390 for 230V. Both are single phase, 50/60 Hz, so either works on standard North American or European control power. Voltage is not field-selectable, so pick the part number that matches the panel supply before ordering.
2) Will an IP 20 enclosure heater work in a washdown or outdoor cabinet?
The 3105 heater itself is only IP 20 to IEC 60 529 and EN 60 529, so it must live inside a sealed enclosure. It is fine in an outdoor or unconditioned cabinet as long as the cabinet keeps water and dust off it; the heater is not rated for direct exposure to spray or weather. Inside a sealed panel it is doing exactly the job it was built for: holding the interior above dew point so condensation does not form.
3) Do I need a fan-assisted enclosure heater or a convection-only one?
The 3105 is the fan-assisted PTC version, which forces warm air around the cabinet instead of letting it stratify at the top. That matters in taller or densely packed control panels where components low in the enclosure would otherwise sit cold and collect moisture. A convection-only heater is the quieter, moving-parts-free choice for small, lightly loaded boxes; pick the fan version when you need even temperature across a full-height cabinet.
4) How much heating output does the Rittal 3105 provide, and how do I size it to my cabinet?
Continuous thermal output spans 235 to 800 W across the series, rated 235 W / 250 W at 10 degrees C ambient. Size from your enclosure surface area, the coldest ambient you expect, and the temperature rise needed to stay above dew point. The wide output range is why the 3105 gets used on everything from small machine-control boxes to large outdoor cabinets.
5) Does the Rittal 3105 heater need a separate fuse or breaker in the panel?
An integrated pre-fuse is built in: a miniature circuit-breaker/fuse rated 4A protects the heater circuit. That simplifies the panel layout, though the branch circuit feeding it still has to be protected per your installation's wiring rules.
6) How cold can it get before this enclosure heater stops working?
The 3105 operates from -33 degrees C up to 65 degrees C ambient, so it will start and run in hard winter conditions in unheated plant rooms, outdoor kiosks, and remote cabinets. That low end is the reason it shows up in cold-climate installations where a panel would otherwise go below dew point overnight.
7) Does the Rittal 3105 heater need a ground connection?
It is built to Protection Class II, total insulation, in a plastic housing, so it does not rely on a protective earth connection for safety. Wiring is the line and neutral for the voltage version you ordered. The plastic body also means no conductive surface inside the panel to worry about.
8) Does the 3105 heater come with a thermostat or does it switch itself?
This is a PTC element heater, which self-limits its output as its own temperature rises rather than running flat out. For holding a panel at a set point you still pair it with an enclosure thermostat or hygrostat on the supply side; the 3105 ships as the heater with fan, and the control device is a separate order item.
9) Will a 3105 heater stop condensation and corrosion inside a control panel?
That is its purpose. By keeping the enclosure interior above dew point and holding relative humidity down, it prevents moisture forming on terminals, relays, and PCBs, which is what drives corrosion and short circuits in outdoor and unconditioned panels. The fan matters here, since stagnant cold pockets are where condensation shows up first.
How fast can I get the Rittal 3105390 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Rittal 3105390 come with a warranty?
Absolutely. The Rittal 3105390 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Rittal 3105390?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Rittal 3105390 from ZenSupply?
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