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Helix Series

Helix 2.5

Product #: 1050.000.US

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. 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. Hard work has never been so easy.

List Price:



Icon for "Patented Eccentric" represented by grinding disc and impact drill.

Slide Up

Slide Up Feature
Icon for "Twilight Function" represented by multiple vertical lines descending to the right.


Opening of the anti-glare display can be continuously adjusted after welding to significantly reduce eye fatigue
Icon for "Shadetronic" represented by its text inside a circle with scale showing increasing decibels.


Automatically adapts to changing light conditions of the welding arc
Icon for "Sensitivity Regulation" represented by a welding helmet and sun.


Anti-Glare feature
Icon for "Construction Helmet Adapter" represented by a side view of a hard hat.

Removable Hardhat

Removable Hardhat Feature
Icon for "General Feature" represented by a star.

Twilight Function

Twilight Function Feature
Icon for "Construction Helmet Adapter" represented by a side view of a hard hat.

Sensitivity Control

Sensitivity Control Feature
Icon for "True Color View" represented by three circles intersecting.

True Color Vision

True Color Vision Feature
Icon for "Flip Up Mode" represented by a side view of a welding helmet with its cover lens opened.

Opening delay

Opening delay Feature
Icon for "Overhead Welding" represented by grinding disc and impact drill.

Overhead Welding

Overhead Welding Feature
Icon for "Sensors" presented by a circular dot with wave signal.

5-Point Detection

intelligent five-sensor control to adjust shade levels even in the most difficult lighting conditions
Icon for "Recharge" represented by the text "rechargeable" and the half-full battery symbol.

Rechargeable Battery

Rechargeable Battery Feature
An icon for "Warranty Extension of 2+1 Years" represented by numbers two and one.

Warranty Extension (2+1 years)

Warranty Extension (2+1 years)


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/


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



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Product Variants:

Accessories & Replacement Parts:

USA Distributors:

Logo of Baker's Gas represented by the letter "B" and the address "bakersgas.com"
Baker’s Gas & Welding Supplies
CyberWeld Logo featuring the brand and the animated rat mascot wearing a welding helmet and a welding torch.
Welding For Less (WFL) Supply Company Logo with the welding helmet icon on the center.
Logo of Welding Supplies From IOC (Indiana Oxygen Company) in black and white with yellow lightning icon.

Canadian Distributors:

Canada Welding Supply Logo featuring the acronym CWS in yellow font with the Canada Maple leaf icon on the center.