KASK Zenith X2 vs. Petzl STRATO® VENT Helmet: Your Head Protection Guide.
Article
por Cian Shah
Work-at-Height Helmets · MTN SHOP
KASK Zenith X2 vs Petzl STRATO® VENT: Which Pro Helmet Fits Your Task?
Side-by-side comparison of an electrical-ready, closed-shell work-at-height helmet (Zenith X2) and an ultra-light, ventilated, modular helmet (STRATO® VENT). See standards, fit systems, accessories, videos, and buying tips.
On this page — quick navigation
KASK Zenith X2 (Closed shell · Electrical Class E)
Petzl STRATO® VENT (Lightweight · Vented · Modular)
Choose Zenith X2 when you need ANSI Z89.1 Type II — Class E electrical protection, debris resistance, and rugged site performance. Choose STRATO® VENT if your day mixes ground & height tasks and you value ventilation, low weight, and DUAL chinstrap flexibility.
At-a-Glance Comparison
| Feature | KASK Zenith X2 | Petzl STRATO® VENT |
|---|---|---|
| Shell | Closed (no external vents) | Vented (integrated vent holes) |
| Weight | ≈ 470 g (1.04 lb) | ≈ 410 g (0.9 lb) |
| Fit range | 52–63 cm | 20.9″–24.8″ (≈ 53–63 cm) |
| Chinstrap | 1-mode · resistance > 50 kg | DUAL · high > 50 kg (EN 12492) / low < 25 kg (ground) |
| Standards | ANSI Z89.1 Type II — Class E; EN 12492; CSA Z94.1-15 | CE; EN 12492; ANSI Z89.1 Type I Class C (conductive) |
| Electrical protection | Yes (Class E; proof-tested to 20,000 V) | No (Class C) |
| Comfort systems | Adaptive Fit System, Self Adaptive Live Hinge, eco-leather chinstrap | CENTERFIT centering + FLIP&FIT low headband; replaceable comfort foam |
| Accessory ecosystem | Integrated headlamp clips; visor & hearing protection ready; nape/helmet protectors; Easy Click visor adaptors | EASYCLIP eye shield; headlamp mounts/elastic; helmet & nape protectors; hearing protection; ID holder; changeable foam/strap |
| Typical environments | Electrical sites, towers, rope access, high-rise construction, adverse weather | Mixed ground/height, hot climates, long wear times, frequent don/doff |
Always confirm the exact model and required standard(s) with your safety manager or AHJ before use.
Use-Case Matrix — Quick Picks
Choose Zenith X2 if…
- You require Class E electrical protection.
- Debris/weather favour a closed shell.
- Your work is primarily at height.
Choose STRATO® VENT if…
- You alternate between ground & height.
- Heat or exertion make ventilation vital.
- You prioritise low weight & modularity.
Either works when…
- Used within maker specs and the right standard.
- Equipped with task-specific accessories.
- Inspected before use; worn parts replaced promptly.
KASK Zenith X2 — What’s New & Why It Matters
- Upgraded Protection: Meets/enhances EN 12492, ANSI Z89.1 (Type I & II) — Class E, and CSA Z94.1-15 for impact/penetration and electrical hazards.
- Magnetic Buckle Chinstrap: Fast, glove-friendly fastening/unfastening.
- Adaptive Fit System: Dual-diameter dial, ergonomic side wings, and patented Self Adaptive Live Hinge track head movement for all-day stability.
- Click-In System: Quick, durable padding attachment; simplifies replacement and hygiene cycles.
- DRY+ Fabric: Hydrocool® moisture-wicking with silver-ion deodorising treatment for comfort and hygiene.
- Class E Electrical: Proof-tested to 20,000 V for electrical environments (follow site rules).
- Accessory-Ready: Integrated headlamp clips; Easy Click visor adaptors; earmuff slots; nape & helmet protectors; earplug hooks; hi-viz nameplate; ring-to-hook.
- Tech Build: HDPP external shell (impact absorption to −30°C, anti-yellowing); D-Core low-density inner; HD crown protection.
- Specs: ~470 g (1.04 lb); size: one size (52–63 cm); Product Code WHE00097-201.
Petzl STRATO® VENT — Key Highlights
- Ultra-Light Build: Two-part EPP + EPS liner cuts weight and absorbs shock.
- CENTERFIT & FLIP&FIT: Precise centering and a low, locked-in headband (folds into shell for storage).
- DUAL Chinstrap: Switch high (>50 kg) for EN 12492 height work or low (<25 kg) for ground safety.
- Vented Shell: Airflow for heat management and faster drying.
- Modular: EASYCLIP eye shield, headlamps, helmet/nape protectors, hearing protection, ID holder; replaceable foam & strap.
- Standards: CE; EN 12492; ANSI Z89.1 Type I Class C (conductive; no electrical protection).
- Fit/Weight: 20.9″–24.8″ (≈ 53–63 cm); ≈ 0.9 lb (≈ 410 g).
Watch: STRATO® VENT & Zenith X2 Overviews
Petzl STRATO® VENT
KASK Zenith Series
In the Field
MTN TIP
Before each shift, confirm the chinstrap mode for your task. For height: select high strength (>50 kg). For ground: select low (<25 kg). If any job step includes electrical exposure, use a Class E helmet such as Zenith X2. Record the setting in your toolbox talk.
Care, Inspection & Replacement
Daily Checks
- Inspect shell (cracks, UV chalking), liner (deformation).
- Verify chinstrap integrity & correct mode (high/low).
- Confirm accessories seated/locked per brand spec.
Cleaning & Storage
- Clean with mild soap & water only; no solvents.
- Air-dry fully; avoid heat sources.
- Store cool, dry, out of UV/chemicals; keep padding hygienic.
When to Replace
- After any significant impact or failed inspection.
- Per manufacturer lifetime and company policy.
- Replace worn pads/straps promptly to maintain compliance.
Always follow manufacturer instructions and applicable standards. Training required for professional applications.
Frequently Asked Questions
Which helmet is rated for electrical protection?
KASK Zenith X2 is ANSI Z89.1 Type II — Class E (proof-tested to 20,000 V). STRATO® VENT is ANSI Type I Class C and offers no electrical protection.
Type I vs Type II in ANSI Z89.1 — what’s the difference?
Type I: top impact. Type II: top and side impact. Your site or AHJ specifies which is required.
Can I mix and match accessories across brands?
Use brand-approved accessories (e.g., Petzl EASYCLIP shields on STRATO; KASK Easy Click adaptors on Zenith X2) to ensure compatibility and compliance.
Is STRATO® VENT better in hot conditions?
Generally yes — the vented shell, EPP+EPS liner, and CENTERFIT + FLIP&FIT systems enhance airflow and comfort during high-output work.
What’s actually new on the Zenith X2 vs original Zenith?
Key upgrades include expanded standards coverage (Type I & II Class E), magnetic buckle, Adaptive Fit System with Live Hinge, Click-In padding, DRY+ fabric with Hydrocool® and silver-ion treatment, and refined accessory interfaces.
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