The MSA 3S Basic Plus Full-Facepiece Respirator is part of the trusted 3S Series, which has surpassed five million units sold worldwide. Designed as an economical solution within the range, the 3S Basic Plus offers reliable respiratory protection for industrial, mining, and confined-space operations. This model is equipped with a universal RD40 threaded connector, making it compatible with a wide selection of MSA filters and cartridges conforming to EN 148-1 standards.
The facepiece is constructed from soft rubber for a pressure-free seal and ergonomic fit, while the impact-resistant polycarbonate visor ensures a wide, clear field of vision. A well-designed inner mask helps manage airflow, reducing fogging and breathing resistance. The quick-fit harness system allows for fast donning and stable integration with other PPE, including helmets.
Key Features
Universal size (standard and small options available)
Soft rubber face blank for a pressure-free, ergonomic seal
Impact-resistant polycarbonate visor with a wide field of vision
RD40 threaded connection (EN 148-1) for compatibility with screw-type filters and PAPRs
Inner mask design improves airflow and reduces lens fogging
Quick-fit harness system suitable for rescue and helmet integration
Lightweight construction for extended use
Also available in multiple variants, including Triplex glass lens, silicone seals, and mask-helmet combinations
Typical Applications
Mining: Dust and gas protection in underground operations
Chemical Handling: Respiratory safety in the chemical exposure zone
Oil & Gas: Plant operations and refinery maintenance
Fire Services***:Note: Basic Plus is not approved for SCBA use
Emergency Services: Search and rescue operations with air-purifying systems
Options and Variants
Harness types: Rubber, silicone, Nomex EZ-don, and helmet adapters
Lens materials:
Polycarbonate (standard, impact-resistant)
Triplex glass (chemical and mechanical resistance)
Silicate-coated glass (select models)
Face blank options: Rubber (standard) and yellow silicone (optional)
Over 50 configurations available depending on application needs
Compatibility
The Full-Face Mask 3S Basic Plus is certified and approved to EN 136, Class 2.
The 3S Basic Plus is provided for use with respiratory protective filters [screw-type filters with thread to EN 148-1] and Powered-Air-Purifying-Respirators. It is not approved for use by fire departments or as a face piece in combination with compressed-air breathing apparatus [certified to EN 136, Class 2].
Certifications and Approvals
Approvals subject to change without notice and may differ based on configuration, part number and/or country. Contact Customer Service or check the approval label on the product for specific approval information.