HBS-ARC-500 Stud Welding Unit

ARC stud welding according to current standards.


  • Especially suitable for thicker sheets of about 2 mm or higher
  • ISO – especially suitable for attaching cut-to-length ARC-ISO and Fiberfix pins; also material with high heat resistance; excellent for insulation applications in building construction and fire-resistant insulation (FRI)

Process variants

  • Short cycle drawn arc welding
  • Drawn arc welding


  • Welding with ceramic ferrule (series)

Technical Data

Welding range #4 to 7/16″, dia. 14 ga to 5/16″ (M3 to MR10, dia. 2 to 8 mm)
Welding material Mild steel, stainless steel
Welding rate 5 to 15 studs/min (depending on application and stud dia.)
Welding current 580A
Welding time 5 to 350 msec
Primary power 230/460 V 3 phases, 50/60 Hz, 35 AT or 575 V, 3 phases, 50/60 Hz, 25 AT (alternative input voltages available)
Power source Transformer/Rectifier
Cooling type F (temperature controlled cooling fan)
Protection class IP 23
Operational and storage conditions According to current standards
Dimension L x W x H 18.50″ x 9.06″ x 8.66″ (470 x 230 x 220 mm) without handle
Weight 68.34 lbs (31 kg)
Order No. 230/460 V: 93-16-0401A575V: 93-15-040

Printable Specsheet



  • Microcontroller – for precise process times, optimal functional reliability and maximum operating convenience
  • Function monitoring – automatic function test following power-up; monitoring of all internal system functions
  • Display of error codes – on digital display
  • Lift test – for gap welding guns


  • Extremely easy to operate
  • Compact
  • Robust – metal housing withstands rough treatment in shop and on site


  • With integrated mains filter (protection against voltage peaks)
  • Optimal for construction sites with large mains voltage fluctuations – use even with critical voltage supply (- 10% + 10%)
  • EMC test
  • High-voltage test with log
  • Retriggering lock-out – prevents welding on a welding element that has already been set
  • Thermal monitoring of transformer – automatic shutdown in case of overheating
  • Temperature-regulated ventilator – reduces noise and dust in the stud welding unit (greater system reliability)
  • Consistent separation of transformer and control unit – protects electronic components against dust and thermal loading
  • Control unit galvanically separated from welding lines – high degree of functional safety
  • Cooling-air tunnel – channelling of cooling air to the transformer protects electronic components against dirt and dust
  • Optimal protection against external interferences
  • Protection class IP 23
  • Also permits operation outdoors


  • Display – infinitely adjustable power setting; easy monitoring of all functions via LED displays; display of welding time; control and monitoring of all system functions
  • Powerful – built-in power reserves
  • Trouble-free changing of welding voltage polarity possible by reconnecting welding current and ground cables

Suitable stud welding guns

  • A 12, A 16, AI 06
  • CA 08


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