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RADSOK® Technology Powering High-Performance Connections

RADSOK® (Radial Socket) technology is Amphenol proprietary high-current contact system, engineered to deliver superior electrical performance in demanding applications. Its unique hyperbolic grid design ensures low contact resistance, high mating cycle durability, and efficient power distribution.​

Discover RADSOK® Technology from Amphenol Industrial—engineered for high-current, low-resistance connections across EV, solar, heavy equipment, and power systems. Learn how our technology improves efficiency and durability.

RADSOK® technology is Amphenol Industrial’s signature contact innovation engineered for superior current-carrying performance. Designed to support the electrification of modern systems, RADSOK® delivers low contact resistance, minimal insertion force, and exceptional durability in rugged environments—making it a trusted choice across transportation, industrial automation, renewable energy, and datacom.

What is RADSOK® Technology?

RADSOK® (RADial SOcKet) is a proprietary contact system featuring a hyperbolic grid of twisted, high-conductivity alloy wires. This design increases the contact surface area between mating pins and sockets, enabling up to 50% more current-carrying capacity than traditional contacts of the same diameter. The result is efficient power transfer, reduced heat generation, and extended connector life. For even greater performance in harsh environments, Amphenol Industrial offers the next-generation RADSOK® Enduro-RX™ contact technology, which delivers superior shock, vibration, and mating-cycle durability—learn more in the product brief.

Key Advantages of RADSOK® Contacts

  • High Current Capacity: Supports up to 1,200 A depending on the contact size
  • Low Insertion/Extraction Force: Eases assembly while maintaining a secure connection
  • Low Contact Resistance: Improves power efficiency and reduces system losses
  • High Mating Cycles: Exceeds 1,000 mating cycles without degradation
  • Rugged Reliability: Maintains electrical integrity in high-vibration or harsh environments

RADSOK® Applications Across Industries

RADSOK® contacts are used in a wide range of high-reliability, high-current applications, including:

  • Electric and Hybrid Vehicles (EV/HEV) – battery disconnects, charging inlets, and onboard power distribution
  • Data Centers and AI Systems – high-efficiency server and power supply interconnects
  • Renewable Energy – solar inverters, combiner boxes, and energy storage systems
  • Rail and Heavy Equipment – traction power systems and high-vibration environments
  • Industrial Automation – power drives, inverters, and robotics

Why Engineers Choose RADSOK®

With decades of proven performance and continuous innovation, RADSOK® contacts are trusted in mission-critical applications. Engineers value the balance of high power density, thermal performance, and mechanical robustness that RADSOK® consistently delivers. Whether you're designing the next generation of EVs or building AI data clusters, RADSOK® enables more reliable power connections with less engineering compromise.

Explore the RADSOK® Product Family

Amphenol Industrial offers a wide variety of RADSOK®-based interconnect solutions tailored for PCB, cable, and hybrid power systems:

Scroll down to review RADSOK® connector solutions tailored to your design needs.

Connectors to fit your industry requirements by design

Featured image for “EMI Wind-Lok®| High Vibration Connector”

EMI Wind-Lok®| High Vibration Connector

Circular, Metal, Reverse Bayonet Coupling, Harsh Environments, High Power
Featured image for “RADSOK® PGY™ | High Current PCB Connector for Reliable Power”

RADSOK® PGY™ | High Current PCB Connector for Reliable Power

High Amperage, Board Level, Power, R4 RADSOK® Technology
Featured image for “SurLok Plus® | Compression Lug”

SurLok Plus® | Compression Lug

Quick Lock and Press-to-Release Design, Plastic, RADSOK® Technology
Featured image for “Amphe-PD™ Mini and Gen2 | Powerful Small Form Factor Connector”

Amphe-PD™ Mini and Gen2 | Powerful Small Form Factor Connector

Plastic 2 pole connector with RADSOK contacts, up to 150 amps.
Featured image for “Tru-Loc® Splitter | Rugged CANbus Splitter Connector”

Tru-Loc® Splitter | Rugged CANbus Splitter Connector

CANbus Network: CAN-High, CAN-Low, Ground or Shield, I/O Power, Rectangular, Splitter, Plastic
Featured image for “RADSOK® SMT RADSERT™ | High Current PCB Contact for Powerful Designs”

RADSOK® SMT RADSERT™ | High Current PCB Contact for Powerful Designs

High Amperage, Board Level, Power, R4 RADSOK® Technology
Featured image for “Amphe-GTR | Power Distribution Systems for Industrial Applications”

Amphe-GTR | Power Distribution Systems for Industrial Applications

Cylindrical, Composite, Reverse Bayonet Coupling, Power RADSOK® Sockets for High Voltage and Amperage
Featured image for “Amphe-PRB | Rugged Circular Connector Unlocks Reliable Power”

Amphe-PRB | Rugged Circular Connector Unlocks Reliable Power

Cylindrical, Plastic, Bayonet Coupling, Multi-Phase, Power Connector
Featured image for “RADSOK® RadFin™ | Reliable Busbar Power Connector Solution”

RADSOK® RadFin™ | Reliable Busbar Power Connector Solution

High Amperage, Board Level, Power, R4 RADSOK® Technology
Featured image for “RADSOK® PowerBlok™ WTB | Compact Board Connectors for Power Applications”

RADSOK® PowerBlok™ WTB | Compact Board Connectors for Power Applications

High Amperage, Wire-to-Board, Power, R4 RADSOK® Technology
Featured image for “UPC Connectors | Trusted Reliable HEV Battery Solution”

UPC Connectors | Trusted Reliable HEV Battery Solution

Rectangular, Plastic, Latch Coupling, Touch Proof, Power Connector
Featured image for “Tru-Loc® | Unstoppable Performance with the Amphenol Industrial Tru-Loc®”

Tru-Loc® | Unstoppable Performance with the Amphenol Industrial Tru-Loc®

Rectangular, Plastic, Latch Coupling, Harsh Environment, Power Connector
Featured image for “RADSOK® PowerBlok™ | Enable NextGeneration Electrification”

RADSOK® PowerBlok™ | Enable NextGeneration Electrification

High Amperage, Board Level, Power, R4 RADSOK® Technology
Featured image for “ePower | Sealed Power Connector for EV”

ePower | Sealed Power Connector for EV

Rectangular, Metal, Press fit, Environmental, Power Connector
Featured image for “Amphe-RXS | Power and Signal Connector in Harsh Environments”

Amphe-RXS | Power and Signal Connector in Harsh Environments

Rectangular, Power and Signal, Brush, Lever Lock or Jack Screw, RADSOK®
Featured image for “RADSOK® RadStack™ | PCB Mezzanine Power Connector Drives Success”

RADSOK® RadStack™ | PCB Mezzanine Power Connector Drives Success

High Amperage, Board Level, Mezzanine, Power, R4 RADSOK® Technology
Featured image for “Amphe-PD™ | Power Distribution Connector for Demanding Systems”

Amphe-PD™ | Power Distribution Connector for Demanding Systems

Plastic 2 pole connector with RADSOK® contacts, up to 120 amps
Featured image for “GTC-E Series | High Power Connectors with Proven Reliability”

GTC-E Series | High Power Connectors with Proven Reliability

Metal, Reverse Bayonet Coupling, Harsh Environment
Featured image for “ePower-Lite and ePower-Lite Mini”

ePower-Lite and ePower-Lite Mini

Rectangular, Plastic, Touch-Proof, Environmental, Power Connector
Featured image for “Amphe-Power | Multi-Pin Power Connector for Reliable Performance”

Amphe-Power | Multi-Pin Power Connector for Reliable Performance

Cylindrical, Metal, Threaded Coupling, Benign Environment, Power Connector
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Amphenol Industrial's product lines consist of rectangular, standard miniature, fiber optic, EMI/EMP filter, and a variety of special application connectors.

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