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Controller, Control Board SR3, (Blue)

Brand: Thermo King
Product Code: 452446

Used: 1 560.00$

New: 2 400.00$

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to the WhatsApp application. Send us a link to the spare part or provide its code.

Step 2: Receiving information
The consultant will provide you with the
necessary information about the products,
their cost and availability.

Step 3: Order confirmation
The consultant confirms the order and
provides information about the delivery
methods and terms, and can also take a
photo or video of the spare part upon request.

Place an order by phone:
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spare parts.

+7 (928) 563-26-64 Place an order E-Mail:
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Step 2: Sending a letter
If the "Mail client" does not open. Send us a
request by mail: info@rbhshop.ru.
Attach a link or part code, and then
wait answer.


We are the company «RefBelholod»
We have been working with refrigerators
CARRIER & THERMO KING for more than 10 years.


We have a large warehouse of secondary spare parts for refrigerators. Excellent quality of spare parts, all spare parts are inspected!


📞 Contact us
For all questions, as well as for advice, please write to us on WhatsApp!

WE ONLINE : WRITE A MESSAGE

Due to technical reasons, consultation by phone is not always possible. In this case, please contact us via WhatsApp. Sorry for the inconvenience.
+7 (916) 529-69-16


🛒 Placing an order

To place an order, contact us in any way convenient for you. Send us a link to the spare part or its article number.


✅ Order delivery

If the spare part is in our warehouse in Minsk, we will try to quickly deliver it to any city in the CIS where there is SDEK.

If the spare parts are not in the warehouse in Minsk, we will try to find them in the UAE and send them for you, and we will also deliver from the warehouse in Moscow to any city where there is SDEK.

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Interface Control Board SR3 (Blue) Thermo King 45-2446 / 452446 / 45-2724

The Genuine Blue Interface Board Thermo King 45-2446 / 452446 (Universal Controller Interface PCB) is a premium electronic management component engineered to provide absolute system logic for Thermo King Trailer units with SR2 or SR3 control systems. This "Blue Board" is a unique universal solution: it can be used as a direct upgrade to replace older SR2 green boards, while SR2 boards cannot be used to replace SR3 units.

Seated firmly within the main control box, this heavy-duty interface board processes high-speed data between the microprocessor and Yanmar 4.82, 4.86, and 486V engines. Utilizing faulty or non-original alternative boards results in unpredictable logic behavior, including false sensor readings and emergency unit shutdowns. Corrosion or vibration damage on compromised PCBs can lead to total system failure, risking catastrophic cargo loss during long-haul transit. Because the operational integrity of all modern Thermo King trailers depends on this module, installing a genuine 45-2446 board ensures absolute communication stability and circuit protection under continuous heavy-duty demands. This board features professional-grade soldering and a specialized protective coating against high-vibration environments.

This critical electrical overhaul piece is indexed under factory assembly reference codes: **Thermo King 45-2446** (452446), with extensive interchangeable part numbers: **45-2362, 45-2724, 845-2721, 45-2739, 45-2276, 45-2615, 45-2391**, and engineering identity **1E60325G09**.

Technical Information:

  • Manufacturer: Thermo King (Original OEM Equipment)
  • Part Catalog Numbers: Thermo King 45-2446, 452446, 45-2362, 45-2724, 845-2721, 45-2739
  • Engineering Reference: 1E60325G09
  • Part Type: Universal Interface Control Board (Blue PCB)
  • Compatibility: Replaces SR2 boards, standard for SR3 units
  • Compatible Units: ALL Thermo King Trailers (SB, SL, SLX, SLXe, SLXi series)

Used in Refrigeration Units and Power Packs:
Specified for advanced electronic restorations, universal fleet upgrades, and modern reefer maintenance, including:
SB-series: SB-110, SB-210, SB-310, SB-400, SB-III SR+;
SL-series: SL-100e, SL-200e, SL-400e SR2;
SLX-series: SLX-100, SLX-200, SLX-300, SLX-400, SLX Whisper, and Spectrum SLX units;
SLXe / SLXi-series: All modern trailer platforms requiring the Blue Board architecture.

Catalog Number:

Thermo King: 45-2446, 452446, 45-2724
Engineering: 1E60325G09

Доставка и гарантия:
Доставка по всей России и Беларуси. Оперативная отправка транспортными компаниями в день оформления заказа.

Warranty – 1 month. Distributed in anti-static protective packaging to secure precision electronic components and prevent PCB failure prior to installation.

Call or message us to inquire about the price, arrange a meeting, or coordinate delivery. Price is negotiable!


Product Description: Buy genuine SR3 blue interface control board Thermo King 45-2446 / 452446 for all reefer trailers. Universal module replaces SR2 boards. High-reliability PCB for microprocessor management and system accuracy. Fast shipping.

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Price information is updated automatically, every night!


The price during the day can change several times, in such cases it is unloaded manually.

In most cases, RefBelholod provides up-to-date information on prices, but no one is immune from a technical failure!


We try to ensure that the information is always up-to-date.

We will pack it beautifully and provide it for you around the clock!

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Tags: Electrical Equipment / Thermo King SLX / SLXe / SLXi