3M Speedglas G5NC welding filter 46-0000-20

3M Speedglas G5NC welding filter 46-0000-20

3M manufacturer code: 7100349686, model 46-0000-20

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The G5NC 46-0000-20 is made for welders who want a clear, simple and effective filter. Its Natural Colour technology shows the weld pool and workpiece in natural colours, for more comfortable reading of the joint. Adjustment is done right on the filter: welding shades 8 to 12, cutting mode 5 and grinding mode in light state 3. Three sensors and five sensitivity settings fine-tune detection, and the recovery delay can be set so each weld ends smoothly. It suits most MMA, MIG/MAG and TIG, including low-current TIG processes. Sold as one filter, it replaces a worn filter or equips a G5 helmet supplied without optics.

Features and benefits for the welder

• Natural Colour: the weld pool and workpiece keep colours close to reality.
• Three clearly separate modes: welding from 8 to 12, cutting 5 and grinding in light state 3.
• 55 x 107 mm window to keep the joint well in view.
• Recovery delay adjustable from 50 to 470 ms for more comfort at the end of a weld.
• Simple switching on with an ON/OFF button.

Applications and assembly compatibility

According to the March 2025 G5NC technical sheet, this filter fits the G5-01 (RG501) helmet and all compatible G5-03 helmets. Its inner face is protected by the 06-0200-21 (R06-0200-21) cover, specific to the G5NC; outside covers are chosen for the equipped helmet among those listed by 3M. It is recommended for metal fabrication and processing.

Specifications and applications

• Shape : Flat
• Recommended industries : Metal fabrication and processing
• Auto-darkening filter model : G5-01/03NC
• Number of sensors : 3
• UV/IR protection : Shade 12 (permanent protection)
• Sensitivity : 5 settings (TIG>1 A, MIG/MAG and electrode welding)
• ADF technology : Natural Colour
• User type : Professional
• Facepiece type : Auto-darkening filter
• Product type : Auto-darkening filters
• Lens type : Natural Colour (NC)
• Recommended applications : Metalworking
• Welding shades : 8 to 12
• Light state : 3
• Cutting mode : 5
• Viewing area : 55 x 107 mm (portal and technical sheet)
• Sensors : 3
• Darkening time : 0.1 (23 °C) ms
• Recovery delay : 50 - 470 ms
• Battery : 2 x CR2032
• Published battery life : 2500 h
• Operating temperature : -5 to 55 °C
• Filter compatibility : G5-01 ; G5-03 Pro, Pro Air and E
• Welding processes : Most MMA, MIG/MAG and TIG, including low-current TIG welding processes
• Power on : ON/OFF button

Fitting and checking 46-0000-20

Fit the G5NC in a compatible helmet with its dedicated covers. Check the two CR2032 batteries, set the shade, sensitivity and recovery delay, then verify that the filter works properly before welding.

Care and replacement

Use helmet cleaning time to check the covers, sensors and batteries. A marked cover is replaced separately and keeps the filter in good condition for the next jobs. If the filter switches shade poorly, follow the troubleshooting steps in the technical sheet before returning it to service.

Safe use

This filter is not suitable for laser welding or cutting, or for processes requiring a shade greater than 12.

The G5NC provides permanent UV and IR protection equivalent to shade 12; always choose the welding shade according to the process and current. Stop welding if the filter does not darken correctly.

FAQ: the 46-0000-20 part

Which shades and modes does the G5NC offer?

Welding shades 8 to 12, cutting mode 5 and grinding mode in light state 3. The technical sheet clearly separates these three ranges.

Which helmets can this filter be fitted in?

The G5-01 helmet and all compatible G5-03 helmets, according to the March 2025 technical sheet.

Which inside cover should I order for the G5NC?

The 06-0200-21, an anti-fog cover specific to this filter. The G5TW and G5VC use a different cover, the 06-0200-40.

Which battery does the G5NC use?

It runs on 2 CR2032 batteries, with a published battery life of 2500 h.

How does it differ from the G5TW and G5VC filters?

The G5NC focuses on natural colour and direct adjustment. The G5TW adds a tack welding mode and the G5VC a variable colour; both offer a wider welding range.

Complementary suggestions

Under a G5-03 helmet fitted with the G5NC, the welder keeps anti-fog Genesis glasses (YAU3200) and a Nomex hood (V309). Split-leather welding gloves (G601), reusable UltraFit earplugs (OA4002) and a black flame-resistant long-sleeve shirt (V340) complete the outfit. Before starting, adjust this equipment to your work clothing and inspect its condition while preparing the welding station.

Behind the G5NC filter, choose the anti-fog (R06-0200-21) plate or the inside (R06-0200-20) cover to match the setup. The passive (R126000) plate instead belongs to the passive filter setup. The holder (R46-0680-00) takes a magnifying lens when the job calls for it. The SG-90 (RSG90) bag provides storage for the helmet between jobs.

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