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AC High Current Switching

High Current Switch

Solid-state thyristor switching unit that distributes the welding current of a single inverter to up to five welding heads or guns — eliminating the need for multiple welding power sources.

High current switch cabinet for resistance welding

Description

The High Current Switch is a contactless, self-monitored switching cabinet built around high-performance thyristors. It allows one welding inverter to feed several welding heads or guns sequentially through dedicated channels, with very short switching cycles and full PLC integration. The result is a compact, low-maintenance solution that significantly reduces investment cost compared with installing multiple welding power sources.

Key Features

  • Switches the welding current from one inverter to different welding heads and/or guns
  • Self-monitored switching by means of high-performance thyristors
  • No mechanical components — fully contactless operation
  • Up to 5 channels possible
  • Very short switching cycles
  • Water-cooled for continuous high-current operation
  • Control via PLC, easy integration into existing automation
  • High savings potential vs. multiple welding power sources

Application Examples

Multi-station resistance spot welding cells with one shared inverter

Robotic welding lines using several pincers driven from one power source

Multi-head projection welding fixtures for batch production

Automotive subassembly lines with sequential weld points

Compact welding cells where floor space and energy budget are limited

Retrofit of existing lines to consolidate multiple power sources

Technical Data

ParameterValue
TechnologyAC thyristor switching
Switching elementsHigh-performance thyristors
ChannelsUp to 5
Mechanical partsNone (contactless)
Switching timeVery short cycles
CoolingWater-cooled
Control interfacePLC
Self-monitoringIntegrated
EnclosureCompact cabinet

Final configuration (number of channels, current rating, cooling circuit) is engineered to the application.

Why choose us as your partner?

  • 50+ years of experience in Resistance Welding
  • Technical support 24/7
  • Best Quality to price ratio
  • SolidWorks user for more than 20 years
  • E-plan user for more than 10 years
  • Certificate ISO 9001
  • European CE conformity

Interested in the High Current Switch?

We engineer and integrate complete multi-channel welding installations. Contact us for sizing, channel layout and PLC integration.

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