Helix Series

Helix 2.5

Product #: 1050.000

The Helix 2.5—the new slide-up welding helmet with a panoramic field of vision and a brightness level of 2.5—built for welding in the toughest conditions.

  • Panoramic XXL field of view
  • Shadetronic
  • Fadetronic
  • Rechargeable battery unit with charging via the welding arc
  • 5-point multi-detection sensors
  • Removable hardhat certified to EN397 industry standard.
  • Internal anti-glare unit
  • IsoFit® headgear

With the helix 2.5, you’re prepared for all welding tasks that require a large field of vision and frequent switching between transparent and protective filters. With a light level of 2.5 for welding and a shade range from 5 to 12, it’s the ideal choice for a wide range of applications.


where to buy
where to buy

Available on backorder


Slide Up


Removable Hardhat

Twilight Function

Sensitivity Control

True Color Vision

Warranty Extension (2+1 years)

Rechargeable Battery

Opening delay

Overhead Welding

Technical Specifications

Protection Levels ShadeTronic inactive: protection level 2.5 active, manual: protection levels 7-12 Automatic
protection level regulation over the protection level range 5<12M with individual calibration option
of ± 2.
Power Supply Solar cells, Li-polymer battery, chargeable via micro USB cable
Battery Life 300 to 500 charging cycles
Sensors Five sensors
Sensitivity Infinitely adjustable, new with “Super High” sensitivity
Switching Time light to dark:
0.090 ms at room temperature
0.070 ms at 55°C
dark to light:
0.1 s to 2.0 s (with FadeTronic)
Field of View Depending on headgear adjustment, 2.3 to 6.3 times the field of view of a 100 x 50 mm
industry standard anti-glare cassette
Classification EN379 Optical class: 1
Stray light class: 1
Homogeneity class: 1
Angular dependence class: 2
Dimensional Stability Welding protective mask: up to 220 °C
Front lens: up to 137 °C
Eye Protection Ultraviolet/Infrared Protection: Maximum protection across the range of protection levels
Operating Temperature -10°C to + 55°C / 14°F to 131°F
Storage Temperature -20°C to + 70°C / -4°F to 158°F
Total Weight 640g
Certifications CE, UKCA, ANSI, EAC, AS/NZS, meets CSA Z94.3
Meets pr ISO 16321 standards “TIG+” (“low amp Tig” process)
Scope of Delivery Welding helmet, optrel IsoFit® headgear, removable hardhat, operating instructions, storage
bag, micro USB charging cable, hard hat, front lens, guarantee card
Warranty From the date of purchase: 2 years for manufacturing and material defects, 6 months for the
Extended Warranty 1 additional year (excluding the battery) if you register your product within the first 6
months (from the date of purchase) at https://optrel.us/product-registration/


Helix Product Brochure

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Stick Welding (SMAW)
MIG/MAG (Metal Inert Gas Welding, GMAW)
GMAW high performance welding
Cored wire welding
TIG welding (TIG, GTAW)
Plasma welding
Plasma cutting
Gas welding
Grinding mode