Welding Mask, 91 x 42mm Lens

  • RS Stock No. 171-6848
  • Manufacturer RS PRO
Technical data sheets
Legislation and Compliance
RoHS Status: Not Applicable
Product Details

RS PRO Welding Helmet

From the trusted RS PRO brand, this high-quality welding helmet is suitable for professional applications, such as MIG welding and TIG welding. The welding mask has a lens size of 91mm x 42mm, allowing a good field of visibility. It also attaches with an adjustable strap for comfort and security.

This auto-darkening welding helmet switches from light to dark state automatically when the welding activity starts. This is essential for protecting your eyes at work and conforming to health and safety standards. The light state is DIN 4 while the dark state is a variable shade that is adjustable from DIN 9 to DIN 13 using an external knob. The welding maks response time from light to dark state is 0.04 milliseconds and it returns from dark to clear state in 0.03 seconds to 0.04 seconds.

Power is supplied by solar cells, and the two built-in lithium batteries offer power back-up for longer service life and no need for replacement batteries. This convenient solar power system allows for a long work life with minimal maintenance requirements.

Features and Benefits

• Wheel ratchet size adjustment for easy fitting
• Working time is 5000 hours
• Suitable to be worn with disposable respirators


Auto-darkening welding helmets, or welding hoods, are essential personal protection equipment wherever arc welding takes place. They have advantages over welding masks that simply have static polarized viewing lenses, in that you can see as normal when not welding without having to adjust your mask. The viewing lens only darkens in response to the light given off from arc welding. In many countries, an auto-darkening welding mask is an industry safety requirement wherever welding equipment is used, and they are regarded as a standard piece of safety equipment for welders.

The helmet has advantages over goggles in that they also protect the face and neck from flash sparks, and can even serve as face protection PPE when grinding.


Q: How to set auto darkening welding helmet?

A: This helmet features a simple nob to adjust the variable darkening settings.

Q: How to charge auto-darkening welding helmet?

A: This particular helmet has solar cells, so does not require any external charger

Q: How does auto darkening welding helmet work?

A: This helmet uses an electronically powered auto darkening lens, which darkends to a pre-set shade as soon as you strike an arc.


RS PRO is our own brand range and brings you a wide range of high-quality, great value products offering you more choice. Trusted by engineers all over the world, every part of every RS PRO product has been rigorously tested against demanding industry standards; they’re only given the RS PRO seal of approval if we’re confident of their exceptional quality, which means you can be confident too.

Attribute Value
Lens Size 91 x 42mm
Auto Darkening Lens Yes
3 Within 1 working day(s) (IE stock)
49 Within 2 working day(s) (EU stock)
Unit of sale: Each
(exc. VAT)
(inc. VAT)
Per unit
1 +
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