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Leister TRIAC AT Digital Hot Air Plastic Welding Starter Kit

100% Swiss made quality.

The TRIAC AT is a new generation tool in the revolutionary TRAIC hot air tool range from Leister. The new TRIAC AT is an intelligent yet robust hot air tool for welding and shrinking plastic. It allows you to control your temperature and airflow separately. These two parameters are critical for many plastic welding applications. Temperature settings and airflow settings are easily viewed and adjusted using the new e-drive digital display. The Triac AT incorporates a temperature probe that guarantees a precise temperature. Dual air filters are easily removed for cleaning. The Triac AT features a protective heater tube for user safety.

It is designed for the needs of even the most demanding professional. The TRIAC AT incorporates an ergonomic design, secure handling and a modern look. Decades of experience and Swiss thoroughness is packed into the modern design. Every tool undergoes stringent quality checks prior to leaving the factory in Switzerland. The new TRIAC AT once again proves the renowned reliability of all Leister tools.

 Weighing less than 1Kg the TRIAC AT is a real lightweight.
  • Roofing
  • Tarpaulins
  • Plastic fabrication
  • Flooring
  • Shrinking
  • Overlap welding
  • Draw welding

Complete kit includes:
  • TRIAC AT Hot Air Plastic Welding Hand Tool
  • 5mm Speed Weld Push-fit Nozzle
  • Tacking Nozzle
  • Tubular Push Fit Nozzle 32mm
  • Sturdy Tool Box

Technical Specifications for TRIACAT:
Voltage 230V
Power Consumption 1600 W
Temperature 40 - 620°C
Air Flow (20°C max) l/min 120-240
Weight Kg <1 without cord
Digital Display
Adjustable Air Volume

How To Weld Rigid Plastics:

Which materials can be welded?
Only Thermoplastics can be welded. You must weld like for like plastic to achieve a structurally sound bond.

  1. Prepare the weld surface. Ensure it is clean of dust and dirt so that you can achieve an unobstructed plastic-to-plastic bond. Notch out a “V” groove along the crack or join.
  2. “Tacking” the join or crack together helps to secure the material in place to ensure there is stability and no misalignment of the joins. Run the tip of a tacking nozzle or heated metal item along the join to create an initial bond.
  3. Using a speed welding nozzle or by free hand pendulum welding technique, introduce the plastic weld rod to the weld zone. Ensure equal levels of hot air are directed at the plastic weld rod and the weld surface to ensure they reach “plasticity” at the same time.
  4. When the surface plastic shows signs of slight wetting, move the welding nozzle along the groove while at the same time applying downward pressure on the weld rod to ensure a sound bond.

The below video demonstrates using a Leister Plastic Welder:

Information sourced from
Downloads for TRIACAT:
Product Brochure

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