Non-Vented Class E Dielectric Safety Helmet — GE PPE GH401, ANSI Z89.1-2014 Koroyd

The GE PPE GH401 is a non-vented, Type 1, Class E safety helmet certified to ANSI Z89.1-2014 and proof tested at 20,000 volts — the right choice when electrical hazard protection is required or when site rules prohibit open vents. It is the only helmet in its class that uses Koroyd® technology as its sole impact-absorbing material, outperforming EPS foam by 48% by eliminating energy rebound back onto the user. The fully dielectric ABS shell contains no metal components, weighs just 422 g, and fits head sizes from 53 to 63 cm. Rated for use from -30°C to 60°C, it carries a 3-year warranty.

Why it stands out

• Koroyd® impact liner — not EPS foam: The tubular crushable core absorbs and dissipates impact energy 48% more effectively than standard EPS foam, with no energy rebound onto the wearer.
• Class E dielectric protection: Non-vented, all-ABS shell with zero metal components, proof tested at 20,000 volts — required for electrical utility, linework, and any site where open vents are prohibited.
• Non-vented vs. vented — know the difference: The GH401 (this model) has a sealed shell: no airflow openings, Class E rated, suitable for electrical hazard environments. The GH400 (sold separately) features 10 cross-ventilation vents, is Class C rated, and is designed for thermal comfort where electrical protection is not required. Both share the same Koroyd® liner, ABS shell, 422 g weight, 53–63 cm fit range, and full accessory slot ecosystem.
• 360° adjustable ratchet fit system: A rubber wheel dials in head size across the full 53–63 cm range; ergonomic wings move up, down, in, and out to cradle the back of the neck for all-day comfort.
• 10 accessory slots: Front, rear, and side slots accommodate flashlights, protective eye shields, full face visors, cap-mounted earmuffs (3 cm slots for GE and compatible brands), an ID holder, and more — all on one helmet platform.
• 4-point adjustable chin strap: Black polyester with side anchor points that move up and down for ideal positioning; compatible with earmuff use; meets ANSI Z89 fixed anchor and EN12492 retained anchor requirements.

Who it's for

• Electricians, lineworkers, and utility crews who require Class E dielectric head protection rated to 20,000 volts.
• Construction and industrial workers on sites that mandate ANSI Z89.1-2014 Type 1 compliance and prohibit vented shells.
• Workers in extreme temperature environments — rated for continuous use from -30°C to 60°C (-22°F to 140°F).
• Multi-accessory users who need to mount face shields, earmuffs, flashlights, and headlamps on a single, lightweight (422 g) helmet.
• Oil, gas, telecommunications, and mining crews where both impact protection and electrical hazard compliance are required simultaneously.

Available colors & SKUs

• Black — GH401BK
• Blue — GH401B
• Gray — GH401G
• Green — GH401GN
• Orange — GH401O
• Red — GH401R
• White — GH401W
• Yellow — GH401Y