The TR-617N powered air purifying respirator assembly may be combined with 3M Versaflo headtops and filters or cartridges to create a complete, compact, light weight, easy-to-use powered air purifying respirator for protection against certain particulates, vapours, and gases. Single and four bay chargers are available to charge the battery. The TR-617N may be the preferred choice of customers working in environments with airborne hazards that include particulates and gases or vapours such as pharmaceutical or food manufacturing.