
Frigoboat Merlin II Speed Regulator for BD35F / BD50F
The Frigoboat Merlin II speed controller is a compact electronic board for Danfoss BD35 and BD50 compressors. Model E52152 , it allows automatic control of the compressor speed for optimal performance and energy savings on board.
LIMITED-TIME SPECIAL OFFER
Promotion in progress
-5% off for purchases of €1100 or more*: SB737MVB
from €150 of purchases**

AVAILABLE PAYMENT METHODS
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Available everywhere in Europe
By message and telephone
Possible on request for quote
This is our priority
The Merlin II Frigoboat speed controller connects directly to the Danfoss 101N02xx series controller of your BD35 or BD50 compressor, allowing automatic speed adjustment for efficient and reliable operation of the refrigeration system.
Among its main features, the Merlin II offers:
- Automatic speed control: adjusts the compressor speed for optimal performance
- LED indicators: Green LED for current speed, red LED for troubleshooting.
- Energy savings: improves energy efficiency and protects electronics
- Adjustable speed: potentiometer to adjust the speed between 2,000 and 3,500 rpm
- 12V/24V switch: easy to switch depending on your installation
- Simple installation: connects directly to the Danfoss power regulator
- Supplied as standard with Frigoboat condensing units for seamless integration
- Designed for marine conditions
Note: This regulator is not compatible with older BD3 or earlier electronic regulators.
Optimize the operation of your Danfoss compressor with the Frigoboat Merlin II speed controller . Reliable and efficient, it ensures increased performance, reduced consumption, and improved longevity of your onboard refrigeration system.
- Range / Type
- Regulators
- Brand
- Frigoboat
- Product
- Spare parts
- Manufacturer code
- Frigoboat E52152 (11818)

Shipping / Delivery
Our products are shipped within 24/48 hours, Monday to Friday (excluding public holidays), for items in stock. Delivery time varies depending on the weight of the package, the region, and the country of delivery, and ranges from 2 to 5 days depending on the shipping method you choose. Furthermore, our packages are insured against breakage, loss, or theft for orders over €300.





French Company
We are based in France, in the Pyrénées-Orientales department. Our customer service team speaks and writes in French, Spanish, and English. Customer satisfaction is our priority.
With over 35 years of experience in the world of boating, we put our skills and expertise at your service, to meet your needs and guide you.

Customer service at your service
Need a specific delivery date for this product? Technical information? Contact us by phone or online messaging Monday to Friday from 10:00 to 12:00 and from 14:00 to 17:00 in French at +33 (0) 4 22 91 22 20 .
You can also contact us via our online form outside of the above hours.
Availability
Here are the different statuses on the product page
New releases ONLY available on order : This item will be manufactured by the company upon receipt of an order. The lead time may be 30 to 90 days. This item is made to order and requires specific adaptations to meet technical requirements. Orders are non-cancellable.
Some items have varying delivery times. For information on a delivery date, you can contact us.
Shipping and collection of orders
Here are the methods and times of transport available during shipping (delivery time) on Aquanautique.com

Pick up ONLY from our premises in Perpignan. No shipping!

Next day delivery before 1 p.m. for France, 2 to 4 days for Europe and 3 to 5 days for the rest of the world

Home delivery against signature and delivery to the post office, Pickup relay & Pickup Station lockers in 24 to 48 hours and in France ONLY.

Delivery within 2 to 5 days to a relay point in France ONLY.

Large volume transport. Delivery 2 to 4 days in France and 2 to 7 days in Europe.

We deliver to the following countries
Andorra, Austria, Belgium, Bulgaria, Canada, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, French Guiana, Germany, Greece, Guadeloupe, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Martinique, Mauritius, Mayotte, Monaco, Montenegro, Netherlands, New Caledonia, Norway, Poland, Portugal, Romania, Saint Barthélemy, Saint Martin, Saint Pierre and Miquelon, Slovakia, Slovenia, Spain, Sweden, Switzerland, Vatican City State, United Kingdom, United States, Wallis and Futuna
Refrigeration on board
A wide range of marine refrigeration systems to satisfy all needs. From small DC refrigerators to AC refrigeration installations for cold rooms, refrigerators, freezers, cold rooms and wine coolers in standard or fully customized stainless steel.
The company is based in Giussano, Italy, with an area of 5,000 m2. With a state-of-the-art testing room, laser cutting machines and automatic work centers, Frigoboat products are a perfect representation of “Made in Italy.”
