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Resistance and ultrasonic welding machines

In resistance welding, the conductor is welded together by a high electrical current that generates heat as it passes through the contact resistance. In the case of compacting, the conductor is heavily compressed by ultrasound and pressure. THONAUER offers this process as part of an integrated solution, in both a Komax machine and as a tabletop unit.

The following page gives an overview of THONAUER’s range of resistance welding equipment. For more in-depth details and a personal consultation, do not hesitate to contact us - without obligation!

KWM008 Kompakt AC

Bench top resistance welding unit

Appropriate for labs and small series. Compact design with integrated welding head. Controller offers a variety of adjustment options. Its HV inverter delivers a precise, controlled output current.


Technical Data

Output current <6000 A
Welding head Cylinder dia. 40 mm, stroke 5.00 mm

Sequential compacting station

Sequential compacting station

Compacting allows the further processing of a copper stranded wire without ferrules. The compact design of this unit makes it easy to use. The compacting width is adjustable using an electric motor.


Technical Data

Stranded wire up to 10 mm²
Cycle time <2 sec.
Compacting width stepless, up to 3.5 mm

M1 - 10/40

DC power supply

The M1 Series is a compact and cost-effective DC power supply for resistance welding. Welding heads on request.


Technical Data

M1-10 M1-40
Max. output current 1000 A DC 4000 A DC
Cycle time 10 ms/sec. 5 ms/sec.
Inverter technology Linear HFDC


DC High performance power supply

The m31 Smart series of HFDC resistance welding power supply is designed for high availability, demanding resistance welding applications requiring a high degree of process control and real time data capture. The units employ a unique twin loop control circuit enabling HFDC technology to provide performance similar to Linear DC supplies. The unique system ensures a minimal output ripple across the entire operating range, thereby permitting highly accurate process measurements to be taken in real time. 


Technical data

Max. Output
Current (A)
6,00012,000 18,000
Output Voltage at
Full Load
Full Output Duty
5 % @ 6,000 A5 % @ 12,000 A5 % @ 18,000 A


DC power supply

Quick-response welding controller with precise output current. Welding heads on request.


Technical Data

Output current up to 4000 A
Cycle time up to 2.5 % (25 ms/sec.)
Output accuracy <2 % of set value

DC2013 T

DC power supply 

The DC2013T SMART is the first high-performance resistant welding power supply in the industry, which combines a integrated database process control and monitoring by means of touch panel with ultra-high duty and low ripple 3000 A DC output.

Various weld-head configurations are also available. Contact us for turn-key welding solutions. 


Technical data

Duty cycleup to 6 % (60 ms/s) @ 2000 A, up to 3 % (30 ms/s) @ 3000 A
Output accuracy± 1 %-a

Weld Heads

Modular precision gap and parallel weld head

The precision ultra-low inertia weld head modules can be used standalone mounted on third party application products or may be supplied as bench mounted units. A large range of custom and standard electrode holders are available to suit almost any application. Available as integrated weld heads as well as weld head modules for integration.


Technical data

Force range2–500 N
Electrode stroke25 mm (integrated version)
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