Is a Safety Cabinet Automatically Explosion-Proof?

No. The cabinet body itself is not a device within the meaning of the ATEX Directive 2014/34/EU, as long as it contains no ignition source of its own. It therefore carries no ATEX device marking. The ATEX requirement applies exclusively to the electrical equipment operated on the cabinet.

No – not directly. A safety cabinet limits fire spread but does not prevent an explosion. Explosion protection is achieved through preventing explosive atmospheres (primary explosion protection) and ignition source control (secondary explosion protection). The cabinet's technical ventilation is the decisive factor.

A fan on a safety cabinet is a standalone piece of electrical equipment with rotating parts and electrical components – and therefore a potential ignition source. The combination of fan and safety cabinet is treated as an equipment assembly for workplace safety purposes. In hazardous areas, the fan must comply with the ATEX Directive 2014/34/EU.

If operating an unventilated safety cabinet creates a Zone 2 atmosphere in its surroundings, all electrical equipment located in that area must meet equipment category 3G. This applies not only to the fan but also to other electrical devices nearby. The explosion protection document must record the resulting zone and the protective measures taken.

Yes – if storage follows applicable regulations and guidelines. A ventilated safety cabinet according to EN 14470-1 Type 90 with sufficient air exchange prevents the formation of an explosive atmosphere inside the cabinet and in its surroundings. The cabinet's fire protection (Type 90) limits fire spread in an emergency. Together, ventilation and fire protection form the compliant basis for safe storage.

This depends on whether Ex zones exist or can form at the site. As a general rule: if storing flammable liquids can create an explosive atmosphere, the operator is required under applicable workplace safety regulations to prepare an explosion protection document. With sufficiently ventilated Type 90 cabinets located outside existing Ex zones, the formation of an Ex zone can be prevented – but this fact must still be documented.

A safety cabinet according to EN 14470-1 is tested for fire resistance and designed for the safe storage of flammable liquids. An explosion-protected enclosure (e.g., flameproof per IECEx/ATEX) is designed to control ignition sources and withstand explosion pressures – it is typically used for electrical switch cabinets in Ex zones, not for hazardous substance storage.

All electrical components on the cabinet must comply with the ATEX Directive 2014/34/EU and meet the equipment category required for the relevant zone (Zone 1: category 2G, Zone 2: category 3G). The cabinet body itself does not require ATEX certification. The explosion protection document must record the installation and all equipment used.