ExoFit X300 Class A Vest Style Mining DBI-SALA 3M Harness

ExoFit X300 Class A Mining Harness DBI-SALA 3M

The ExoFit X300 Class A harness by 3M DBI-SALA is designed for workers at height requiring performance and protection. This harness features one aluminum alloy dorsal D-ring with automatic vertical positioning (stand-up), 3M patented auto-locking buckles for quick and reliable donning, and an integrated RFID Connected Safety ID system enabling electronic inspection management. Maximum capacity 310 lb (140.6 kg). Complies with CSA Z259.10-18. Made to order by 3M. Please allow approximately 1 month lead time. This harness is vest style, with vertical shoulder straps for easy donning and optimal comfort.

Technical description : features and components

This Class A harness provides fall arrest through one aluminum alloy dorsal D-ring with automatic vertical positioning (stand-up). 3M patented auto-locking buckles click and lock automatically in a single motion, eliminating the risk of forgetting manual locking seen with conventional double-locking buckles. Each D-ring is made from treated aluminum alloy, offering an excellent strength-to-weight ratio and superior corrosion resistance in wet or chemical environments. The RFID Connected Safety ID system, integrated into the harness body, allows safety managers to electronically record inspection dates and individual verification results. Five independent adjustment points (shoulders, chest, thighs, sub-pelvic) ensure an optimal fit and uniform force distribution during a fall arrest event. It features a padded work belt at the waist with a tongue buckle, providing stable positioning and lumbar support for extended work at height.

Load capacity and certified safety standards

Maximum capacity of 310 lb (140.6 kg) including worker weight, clothing, and equipment. Complies with CSA Z259.10-18 (Safety Harnesses) in effect in Canada. Polyester webbing tensile strength: 6,000 lb (2,722 kg). This harness meets Canadian provincial and federal occupational health and safety regulations for work at height.

Materials : strength, durability and light weight

High-strength polyester webbing (6,000 lb / 2,722 kg), resistant to abrasion, moisture, and UV. D-rings and slides made from treated aluminum alloy, and quick-connect leg buckles of hybrid aluminum-alloy and zinc-plated-steel construction (light weight and strength at the highest-stress points): excellent strength-to-weight ratio, superior corrosion resistance versus alloy steel in wet or chemical environments, and reduced total harness weight to minimize fatigue. The RFID Connected Safety ID system is encapsulated in the harness body, resistant to impact, water, and dust. Padding zones use memory foam covered with breathable fabric for maximum comfort during long workdays at height.

Application and recommended uses

The ExoFit X300 Class A mining harness is designed for demanding underground and surface mining environments. Its robust construction resists abrasions and mechanical impacts in mine galleries and extraction areas. Its light weight thanks to aluminum alloy hardware reduces fatigue during long underground shifts. Compatible with mining helmets and gas detection equipment. Made to order by 3M. Please allow approximately 1 month lead time.

Inspection and service life : verification guide

Before each use, visually inspect the entire harness: webbing (wear, cuts, chemical or thermal burns, excessive UV exposure), hardware (deformation, corrosion, proper operation of 3M patented auto-locking buckles), stitching (fraying, tearing), and D-rings (deformation, cracks). A thorough inspection by a competent person must be performed every 6 months under normal use, or every 3 months under intensive use. Maximum service life is 5 years from first use or 10 years from date of manufacture. The harness must be immediately removed from service after any fall, even without apparent visible damage. Record each inspection using the integrated RFID Connected Safety ID system for complete traceability.

Maintenance and cleaning to extend service life

Clean the webbing with lukewarm water (max 37 degrees C / 98.6 degrees F) and a mild non-abrasive soap using a soft brush. Never use solvents, bleach, acids, or chlorinated products that degrade polyester fibres. Rinse thoroughly with clean water. Air dry away from direct heat and UV rays. Never place in a dryer. Clean the aluminum alloy hardware with a dry or slightly damp cloth. Lubricate auto-locking buckle pivots with light dry lubricant if needed. Store away from heat, humidity, and chemicals.

FAQ : frequently asked questions about this product

How does the RFID Connected Safety ID work?

A passive RFID chip is integrated into the harness at manufacture. With a compatible 3M Connected Safety reader, managers can read the unique identifier and record inspections. This system replaces paper tags and enables complete traceability in a centralized database.

Why aluminum alloy hardware?

Aluminum alloy offers a better strength-to-weight ratio than alloy steel. The X300 is approximately 30 percent lighter than a comparable steel hardware harness, reducing worker fatigue. Aluminum also resists corrosion better in wet or lightly chemical environments.

What is the lead time?

The ExoFit X300 harness is made to order by 3M. Please allow approximately 1 month from order confirmation. Contact Sylprotec to plan your order according to your operational needs.

Complementary Suggestions

To complete your fall protection system, add a leading-edge SRL retractable (FPLR80302-18LE) or an energy-absorbing lanyard (FPL6402) as your fall arrest connection. Protect the head with a Peak T2 helmet with integrated chin strap (TA222), the eyes with safety glasses (YA11514) and hearing with earplugs (OA1250). For the job, add suitable gloves (G378GKGVBE) and a flame-resistant garment (V1766).

Under “Accessories” at the bottom of the page. For safe storage and transport of your equipment at height, a Peakworks bag (FPBAG) keeps your gear clean and inspection-ready.

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