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Hard work never felt so easy.

The new slide-up welding helmet with panoramic field of view and light state 2.5

With the helix 2.5, optrel offers a welding helmet for work under the most difficult conditions. A slide-up helmet with internal ADF that has all the technical features of an optrel helmet:

  • Panorama XXL field of view,
  • ShadeTronic®,
  • Fadetronic,
  • rechargeable battery unit with charging via welding arc and
  • 5-point multi-detection sensor technology.

With the helix 2.5, you are equipped for all welding tasks that require a large field of view and frequent switching between clear and protective filters. With a brightness level of 2.5 during welding and a shading level range from 5 to 12, it is the ideal choice for a wide range of applications.

The optrel helix 2.5 is available with integrated IsoFit® headgear and with hardHat according to EN397 industry standard.

Panorama-XXL-field of view

A six times larger field of view*.
Everything in view. Best views.


Industry standard
optrel helix field of view

The patented nose cutout brings the glare shield closer to your eyes. The result: a much larger field of vision and a clear separation between the mouth and eye area, which also prevents tarnishing of the protective lens.

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* Compared to a 100 x 50 mm standard-ADF.


Always the right shading level.
Fully automatic. Stepless. Safe.

A light sensor permanently measures the intensity of the welding arc and continuously regulates the glare protection over the entire shading level range.

Uninterrupted work at any welding light intensity. 

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For even more comfort when working with optrel helix


Fade-out when switching off the protection level after welding. Wellness for your eyes for fatigue-free work.


Isofit® Headgear

The headgear with numerous adjustment functions. For your personal best wearing comfort.



Intelligent control with five sensors protects you perfectly - even in the most difficult lighting conditions.


Perfect is what fits together perfectly

optrel helix with swiss air respirator

Complemented with the optrel swiss air TH3 respiratory protection system, the helix becomes your optimal welding equipment. The system meets all requirements for eye and respiratory protection and leaves nothing to be desired in terms of comfort.


More about swiss air respiratory protection

helix 2.5

Hard work never felt so easy.

With the helix 2.5, you are equipped for all welding tasks that require a large field of view and frequent switching between clear and protective filters. With a brightness level of 2.5 for welding and a shading level range of 5 to 12, it is the ideal choice for a wide range of applications.

    Twilight Function

    Sensitivity Adjustment

    <p>Bei ausgewählten expert-Produkten werden speziell beschichtete Filter eingesetzt, die eine bessere Sicht auf das Schweissobjekt ermöglichen. Die Farberkennung durch diese Art Filter wurde so optimiert, dass die Farben der Umgebung fast farbecht wahrgenommen werden können. Somit kann der Schweisser auch ohne Probleme rote LEDs der Schweissmaschine ablesen, ohne den Helm anzuheben was die Effizienz im Schweissprozess und die Sicherheit weiter fördert.</p>

    True Color View

    Warranty Extension
    2+1 Years

    New Energy Concept

    Delay Function

    Overhead Welding

    Fields of Application

    • Elektrode Welding (Stick Welding, SMAW)
    • MIG/MAG (GMAW)
    • GMAW High melting rate process
    • Flux Cored Wire Welding
    • TIG Welding (GTAW)
    • Plasma Arc Welding
    • Plasma Cutting
    • Gas Welding
    • Grind Mode


    optrel helix 2.5 welding helmet (SN 1/3/ 4-14 ShadeTronic®) – black, IsoFit® headgear, optrel EN397 hardHat
    optrel helix 2.5 welding helmet (SN 1/3/ 4-14 ShadeTronic®) – black, IsoFit® headgear
    Ready-to-Weld Package helix 2.5 with swiss air PAPR
    Article Nr.DescriptionUnitsImage
    5000.580External cover plate, suitable for HELIX series (set of 5)5
    5000.010Inside cover lens, suitable for panoramaxx Series (set of 5)5
    5000.173Inside cover lens true color, +1.0 shade level, suitable for panoramaxx Series (set of 5)5
    5002.250Spark protection grid, for HELIX industrial safety helmet2
    5003.520Cover for Micro USB connection2
    5003.560Slide Up handle suitable for HELIX1
    5003.600Nose guard pad2
    5011.400Industrial safety helmet suitable for HELIX series - black1
    5011.401Industrial safety helmet suitable for HELIX series - white1
    5003.293optrel IsoFit® headgear (black, black buttons) - maximum ergonomics with exchangeable pad inserts, fits to HELIX series1
    5004.290optrel IsoFit® headgear replacement Tricot pad for optrel IsoFit® headgear (5pc, each consisting of 4 parts)5
    5010.001Micro USB charger cable1
    5000.150Magnifying lens +1.00 - panoramaxx1
    5000.151Magnifying lens +1.50 - panoramaxx1
    5000.152Magnifying lens +2.00 - panoramaxx1
    5000.153Magnifying lens +2.50 - panoramaxx1
    4028.015Chest protection leather1
    4028.016Head & neck protection leather1
    4028.029Leather chest protector long - black: fits all HELIX Series, panoramaxx Series, sphere Series, liteflip Series and Y Series helmets1
    8000.100Helmet backpack - black/green1
    5004.295Forehead welding band long for IsoFit® helix with industrial safety helmet (set of 2)

    Technical Data

    Shade levels
    ShadeTronic inactive: shade level 2,5
    active, manual: shade levels 7-12
    ShadeTronic 5<12M with individual calibration option ± 2.
    Energy supply
    solar cells, Li polymer battery pack, chargeable via Micro-USB
    Battery life range
    300 to 500 charging cycles
    Five sensors
    continuously, new with “Super High” sensitivity
    Switching time
    light to dark:
    0,090 ms at 23°C
    0,070 ms at 55°C
    dark to light:
    0,1 s to 2,0 s (with FadeTronic)
    Field of vision
    2.3 to 6.3 times bigger than a 100 x 50 mm standard ADF
    Classification EN379
    Shape stability
    Mask: up to 220 °C
    Front cover lens: up to 137 °C
    Eye protection
    UV/IR protection: maximum protection at all shade 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
    620 g
    CE, UKCA, ANSI Z87.1, EAC, AS/NZS, EN 166,
    compliant with CSA Z94.3
    Compliant with pr ISO 16321 standard „WIG+“ („low amp Tig“)
    Scope of delivery
    Welding helmet, optrel IsoFit® headgear, manual, bag, Micro USB cable, front cover lens, warranty card
    from date of purchase: 2 years for manufacturing and material defects, 6 months for battery
    Warranty extension
    1 year additional (battery excluded) for online product registration within the first 6 months (from date of purchase) on
    * Shading level extension when using "Inner protective pane colorfast +1.0" - Article 5000.173

    Further information

    For further information pls refer to your optrel partner next to you or to our customer service.