Asiantool A4H (4-Pole, 2x 4A @ 2x 30A)


562 in stock (can be backordered)

4-Channel,2@4A  & 2@30A, 250V, 1200 rpm.

  • Shipment on the same day (only for stocks).
  • Free Shipment over +250 USD via DHL Express or TNT.

Equivalent Product ML-TECH M4

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562 in stock (can be backordered)



Asiantool A4H Mercury Slipring has 2 channels of 4 Amps and 2 channels of 30 Amps. It is a small scale product.
-It provides space advantage in your designs.
-Can also achieve high rotation speeds.
-It has a long working life.

Equivalent products;
Mercotac 430

Product Name  Asiantool A4H Rotary Electrical Connector (REC)
Channels x Rated Current  2x 4A @ 2x 30A 
Rated Voltage, max  250VAC
Operating temperature  -30 °C to 60 °C
Maximum Speed  1200 rpm
Insulation Resistance  >25 Mohm
Rotation Torque  200 gm-cm


They have low internal resistance and usually have pin connections. However, they can also be produced with optional wires if desired.
-In other words, since they provide mercury transmission, their working principles are different from slip rings in other transmission technologies.
-So Asiantool A4H or similar products can work for a long time. This will reduce your costs.

At the same time, during rotation, the liquid protects the electrical connection between the contacts without any wear. Thus, they are long-lived to make an average of 2 billion cycles. However, the quality of the transmission signal always remains at a high level. They also provide a high level of transmission of even very sensitive signals at high rotation speeds.

These types of slip rings use mercury as the conductive medium. In other words, during the conduction process, the mercury creates a connection between the stationary part and the rotating structure. This provides a high quality transmission link with low sag resistance and less noise. Asiantool A4H is nice because it is a small and powerful product.

Mercury Slipring Usage Areas;

  • Packaging Packaging Machines.
  • Military Vehicles.
  • Cable Drums.
  • Wind Turbines.
  • Textile Machinery.
  • Robot Arms.
  • Turntables or Tables.
  • Welding Machines.
  • Laminating Machines.
  • Heated rollers.
  • Cable reels.
  • Robot applications.
  • Thermocouples are strain gauges.
  • Remote video control.
  • Control tools semiconductor production.
  • VFD motor shaft ground.
  • Rotary Laser mercury slipring for LIDAR.

The Benefits of Mercury Slipring

Obviously there are benefits of this product. They indeed provide increased reliability. Particularly their working life is longer. They especially have extremely low electrical noise. They have less than 1 milliohm resistance. Their resistance is obviously less than 1 milliohm. They especially have low voltage Signals or High Power in one compact connector. Undoubtedly they require no maintenance cost.

Moreover, the most used mercury slipring brands:

Asiantool A4H Rotary Electrical Connector (REC)


Housing Material

Aluminum Alloy

Mounting Type


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