For Southeast Asian manufacturers looking to sell on Alibaba.com to European and Middle Eastern buyers, understanding EN397 certification is essential. EN397 is the European standard specifying requirements for industrial safety helmets used in construction, manufacturing, and general industrial applications. The standard was recently updated in 2025, introducing clearer distinctions between helmet types and updated testing protocols [2].
What EN397 Actually Tests
The EN397 standard focuses on several core performance requirements that every compliant helmet must meet. These are not optional features—they are mandatory tests that determine whether a helmet can legally carry the EN397 mark in European markets.
EN397 Mandatory Test Requirements
| Test Parameter | Requirement | Real-World Meaning |
|---|---|---|
| Vertical Shock Absorption | 200g mass dropped from 50mm height | Helmet must limit force transmission to head during vertical impacts |
| Penetration Resistance | 3kg striker dropped from 1m height | Shell must prevent sharp objects from penetrating to the head |
| Chinstrap Release Force | 150N-250N release threshold | Strap must release under specific force to prevent neck injury |
| Flame Resistance | Self-extinguishing within 5 seconds | Helmet must not continue burning after flame source removed |
| Water Absorption | Maximum 5% weight gain after immersion | Material must not absorb excessive water affecting performance |
The 2025 Revision: What Changed
The EN397:2025 update introduced several important clarifications that affect how manufacturers configure their products. The most significant change is the formal distinction between Type 1 (general industrial use) and Type 2 (working at height) helmets. Type 2 helmets now require enhanced chinstrap systems with specific release force requirements—150N for standard applications and up to 500N for height work scenarios [2].
The 2025 revision clarifies requirements for industrial and working at height applications, with updated chinstrap specifications and electrical insulation references to EN 50365:2023 [2].
Electrical insulation testing now references EN 50365:2023, which specifies live working requirements for helmets used on energized electrical systems up to 1000V AC. This is an optional add-on certification, not part of baseline EN397 compliance [5].

