Fish Defroster

Fish defroster is designed for frozen fish block or IQF product defrosting in water. Water defrosting is used when high capacity defrosting process is needed.


PERUZA professional fish defroster is designed for the quick defrosting of Anchovies, Sardines and other types of pelagic and lake fishes. The defroster handles fish in blocks but can also work with IQF products. It takes only 45 minutes to defrost a block of frozen fishes in the PERUZA defroster and the defrosting line ensures non-stop defrosting work – up to 1200 kg/h.

Each defrosting line needs only one operator for placing the fish blocks into the defroster bath. The blocks are placed in all bath areas and are defrosted with the help of warm water and airflow. The programmable logic controller automatically regulates water temperature and level for the most efficient defrosting. Afterward defrosted fish falls onto the conveyor belt and is transported to the next technological unit. There is no damage to the product and thus less giveaway during this stage of processing.

The professional fish defroster ensures faster defrosting and continuous process for more efficient fish processing. Reduced labor costs are also a significant benefit.

Frozen fish blocks are manually loaded in defroster in its whole length. If fish is blast-frozen in boxes, fish together with boxes can be put into water. Boxes then are removed when fish is separated form box surface.

Frozen fish block are defrosted in warm water and air flow. Defrosted fish separates from the block and falls onto conveyor belt which transports it out of the defroster to the next technological unit.
Water temperature and water level is regulated automatically with the help of PLC.

For device operation customer must provide electricity, water, hot steam and drainage.

Main benefits:

Awards received:

“PERUZA proved to be a reliable and professional partner, and helped us improve our shipment processing speed and internal process automation when adjusting to the rapidly increasing volume of shipments."

- Jānis Grants, CEO OF DPD LATVIA -

Technical information

Technical characteristics:


Up to 1200 kg/h

Defrosting ambiance

Warm water, forced water circulation, forced air flow

Fish infeed


Equipment dimension (LxWxH) – Single line

9600 x 1800 x 2300 mm

Equipment dimension (LxWxH) – Double line

9600 x 4400 x 2300 mm

Number of operators

1 for each defrosting line

Electrical power

3,5 kW for each defrosting line

All features & benefits

Extensive module system

Faster production time

Up to 120 products can be processed within a minute with only four operators involved, thanks to the extensive module system.

compact and clever design

Compact size

The unique design allows for the equipment size to be one of the most compact in the market – the machine takes only 6100 x 1750 mm of floorspace! Beyond the dimensions, the thoughtful design allows for highly efficient use of space in smaller factories and various production lines with previously limited capacity.

3D RECOGNITION & weight calculation unit

Reduced giveaway

Precise calculators in our 3D dimension recognition and weight calculation unit reduce the giveaway of the product and increase the line capacity. The final weight range in packaging and current line setup can be adjusted in a smart, easy-to-use interface. 

Adaptable functionality

Fit for various products

The easy-to-use, intuitive user interface allows for the weight range to be adjusted, and this machine can be adapted for various products ranging from fresh or frozen meat and fish to vegetables and fruit.

How it works

Step #1

Arrival on product conveyor

Firstly, the products arrive onto the main product conveyor one by one in 1, 2 or more lanes.

Step #2

Passing through 3D recognition unit

Then the product is passed through 3D dimension recognition and weight calculation unit.

Step #3

Product placement into a tray or box

The program sends a signal to the robot with appropriate gripper to pick up and place the product into a tray or box to reach a set final weight range in packaging that can be adjusted in the user interface.

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