Rittal 3128115 TopTherm Wall-M...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$2,658.71
Rittal 3128115 TopTherm Wall-Mounted Air/Air Heat Exchanger, 115V

Rittal 3128115 TopTherm Wall-Mounted Air/Air Heat Exchanger, 115V

(No reviews yet) Write a Review

Model: 3128115

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

$2,658.71
Adding to cart… The item has been added
Free Shipping on orders over $199
We price match and offer bulk discounts! Click Add to Quote. It's quick and easy.
✨
Earn points with this purchase! You can redeem points for giftcards, iPads, XBox's and more. View Rewards
Free Keying on all locks
You may also like

Rittal 3128115 TopTherm Wall-Mounted Air/Air Heat Exchanger, 115V

The Rittal 3128115 TopTherm air/air heat exchanger is a fully wired, wall-mounted enclosure cooling unit that arrives with an integrated controller and digital temperature display. Rated for 115 V, 1~, 50 Hz/60 Hz operation, it delivers a specific thermal output of 45 W/K to move heat out of enclosures and keep equipment within a safe operating range. The unit carries a protection category of IP 54 (internal circuit) and IP 34 (external circuit) to EN 60 529 and IEC 60 529, and ships fully wired and ready for connection.

Key Features

  • Fully Wired, Wall-Mounted Design: Complete unit ready for connection, supplied with a plug-in terminal strip, drilling template, and fasteners for straightforward mounting.
  • Electronic Temperature Control: Digital display with a factory setting of +35C for clear monitoring and simple adjustment of enclosure temperature.
  • Specific Thermal Output: Rated at 45 W/K for efficient air/air heat transfer in enclosure cooling applications.
  • Rated Operating Voltage: 115 V, 1~, 50 Hz/60 Hz for standard single-phase power connections.
  • Protection Category: IP 54 internal circuit and IP 34 external circuit, rated to EN 60 529 and IEC 60 529 for enclosure-grade ingress protection.
  • Operating Temperature Range: -5C to 55C supports installation across a wide range of ambient plant and panel conditions.
  • Floating Fault Signal Contact: Dedicated signal contact in the event of overtemperature, supporting fault monitoring and alarm integration.
  • Finish: RAL 7035 housing color.

Certifications & Compliance

  • Protection Category IP 54, Internal Circuit, to EN 60 529 and IEC 60 529
  • Protection Category IP 34, External Circuit, to EN 60 529 and IEC 60 529

Technical Specifications

  • Specific Thermal Output: 45 W/K
  • Rated Operating Voltage: 115 V, 1~, 50 Hz/60 Hz
  • Temperature Control: Electronic control with digital display, factory setting +35C
  • Operating Temperature Range: -5 C to 55 C
  • Pre-Fuse: Miniature circuit-breaker/fuse, 2A
  • Color: RAL 7035
  • Packaging Unit: 1 pc(s)
  • Weight/Packaging Unit: 19 kg

Typical Applications

  • Enclosure Cooling for Industrial Control Panels
  • Wall-Mounted Electrical Cabinet Thermal Management
  • Commercial and Industrial Enclosure Installations
  • Panelboard and Equipment Enclosure Cooling

Why Rittal?

Rittal's TopTherm air/air heat exchanger ships as a complete, fully wired unit with a plug-in terminal strip, drilling template, and fasteners included, so it mounts and connects with minimal on-site setup. With electronic digital temperature control, a floating fault signal contact for overtemperature, and IP 54/IP 34 protection to EN 60 529 and IEC 60 529, this heat exchanger provides dependable, code-aware thermal management for enclosure and panel applications.

Manufacturer Resources

Rittal Product Catalog

Product Specs

Product Type:
Enclosure Climate Control
Series:
TopTherm
Voltage Rating:
115V
Amperage Rating:
2A
Product Color:
RAL 7035
Department:
Electrical
Product Group:
Boxes & Enclosures
Product Subgroup:
Enclosure Accessories

Rittal 3128115 – Frequently Asked Questions

1) Will a Rittal 3128115 heat exchanger run on standard 115V single-phase shop power?
Yes. The Rittal 3128115 TopTherm air/air heat exchanger is rated 115 V, 1~, 50/60 Hz, so it connects to ordinary single-phase 115V service. It needs an upstream miniature circuit breaker or fuse rated 2A. It ships fully wired with a plug-in terminal strip, so the field work is the branch circuit and the mounting.
2) What does 45 W/K mean when sizing an air/air heat exchanger for a control panel?
Specific thermal output of 45 W/K is the heat the unit moves for every 1 degree C of difference between the inside of the enclosure and the surrounding air. So with 10 C of difference it shifts roughly 450 W. That is the limitation of any air/air exchanger: it can only cool the enclosure down toward ambient, never below it. If your panel has to sit cooler than the room, or the room is hot, you need a refrigerant-based enclosure cooling unit instead.
3) Can this Rittal air/air heat exchanger be installed in a washdown or outdoor area?
Not in a washdown or weather-exposed location. Protection is IP 54 on the internal circuit and IP 34 on the external circuit, to EN 60 529 and IEC 60 529. IP 34 on the ambient-air side means protection against solid objects over 2.5 mm and spraying water only, not jets or hose-down. Keep it to indoor plant and panel rooms.
4) What comes in the box with the Rittal 3128115, and what do I still need to supply?
It arrives as a complete, fully wired wall-mounted unit with a plug-in terminal strip, a drilling template, and the mounting fasteners. You supply the branch circuit, the 2A circuit breaker or fuse ahead of it, and the control wiring if you intend to use the fault signal contact. Cutting the enclosure to the drilling template is the installer's work.
5) Is the Rittal 3128115 a 115V or 230V unit, and can I use it on 230V?
The 3128115 is the 115V version only, rated 115 V, 1~, 50/60 Hz. Do not put it on 230V. Rittal builds the TopTherm air/air exchangers in separate voltage models, so a 230V installation needs the corresponding 230V catalog number rather than this one.
6) What ambient temperature can a TopTherm 3128115 heat exchanger handle?
The operating range is -5 C to 55 C, which covers most unconditioned plant floors and mechanical rooms. Below -5 C it is outside its rated window. The onboard electronic controller comes factory set to +35 C, meaning the unit starts transferring heat once enclosure air reaches that point, and the setpoint is adjustable on the digital display.
7) How do I get an alarm if an enclosure cooler fails and the panel overheats?
The 3128115 has a floating fault signal contact that trips on overtemperature. Wire it back to a PLC input, a BMS point, or a local alarm and you get notified before the equipment inside cooks. The contact is voltage-free, so you choose the monitoring voltage.
8) Should I use an air/air heat exchanger or a filter fan on my control enclosure?
A filter fan pulls outside air straight through the cabinet, so it is cheaper but it carries dust, oil mist, and humidity in with it, and it compromises the enclosure rating. The 3128115 air/air exchanger keeps the two air paths separate (IP 54 on the internal circuit, IP 34 external), so panel air stays clean while heat is carried off to ambient. In a dirty or damp plant environment that separation is the reason to spend the money. If you need the enclosure below room temperature, neither option works and you want a refrigerant cooling unit.
9) Will a TopTherm heat exchanger match the gray finish on my existing Rittal enclosures?
The housing is RAL 7035, the light gray Rittal uses across its standard enclosure lines, so a wall-mounted unit on a RAL 7035 cabinet will read as the same color family.
10) What is the Rittal part number for this 115V TopTherm air/air heat exchanger?
Order it as Rittal 3128115, from the TopTherm series. It is the wall-mounted air/air heat exchanger at 45 W/K with the 115V control, supplied one piece per packaging unit at 19 kg packaged weight.
How fast can I get the Rittal 3128115 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 3128115 come with a warranty?
Absolutely. The Rittal 3128115 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 3128115?
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 3128115 from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
!