Intrinsically Safe Products are those designed to be used in hazardous areas where there is a risk of causing hazards due to the presence of explosive gases and/or dusts.
There are three categories of Intrinsic Safety approvals:
1. ATEX – Atmosphere Explosive. Certification to the ATEX directive 94/9/EC
2. IEC Ex – International certification system for Ex products
3. FM – IS approval by US based Factory Mutual certification body