Explosion-proof lever hoists, like other explosion-proof equipment, are classified into different levels based on the level of protection they provide against potential ignition sources in hazardous environments. The classification of explosion-proof equipment is typically standardized and regulated by various safety organizations and standards bodies. However, it's important to note that specific classifications may vary depending on the region and applicable regulations. Here are some common explosion-proof classifications for lever hoists:

Class I, Division 1 (CID1): This classification is typically used in environments where flammable gases, vapors, or liquids are present continuously, intermittently, or periodically under normal operating conditions. CID1 hoists are designed to prevent the ignition of these hazardous substances.

Class I, Division 2 (CID2): CID2 hoists are suitable for environments where flammable gases, vapors, or liquids are present but are not expected to be in quantities sufficient to cause ignition under normal operating conditions. These hoists provide protection against potential ignition sources in such environments.

ATEX Zone Classification: In Europe and other regions following ATEX directives, explosion-proof equipment is classified into zones based on the likelihood of explosive atmospheres. ATEX zones include Zone 0 (continuous presence of explosive atmospheres), Zone 1 (frequent presence), and Zone 2 (occasional presence). Lever hoists designed for use in explosive atmospheres are classified accordingly.

NEC (National Electrical Code) Ratings: In the United States, explosion-proof equipment is classified based on NEC standards. These ratings include Class I (gases, vapors), Class II (dusts), and Class III (fibers and flyings). Hoists designed for use in these hazardous environments are labeled accordingly.

IECEx Certification: The IECEx scheme provides international standards for the certification of equipment intended for use in explosive atmospheres. Lever hoists certified under the IECEx scheme are deemed safe for use in potentially explosive environments worldwide.

When selecting an explosion-proof lever hoist, it's essential to consider the specific hazardous environment it will be used in and ensure that the hoist's classification and certification match the requirements of that environment. Additionally, adherence to proper installation, maintenance, and usage guidelines is crucial for maintaining the explosion-proof integrity of the hoist throughout its service life.