Safety Direct MK1011110 Flame Guard / Arc Breaker Harness | Canada
Safety Direct MK1011110 Flame Guard / Arc Breaker Harness instructions and documents
Safety Direct's own documents. Read the instructions before first use.
Safety Direct MK1011110 Flame Guard and Arc Breaker harness. A vest-style Class A fall arrest harness with a single dorsal D-ring, built for welders and electrical crews. Flame Guard versions are flame resistant with pass-through, tongue-buckle (grommet) leg, QC chest, QC or X-pad options. Arc Breaker versions are arc safe and come with a dielectric dorsal D-ring and buckles (pass-through or QC) or a soft web dorsal D-ring, so there is no metal at the back.
Safety Direct MK1011110 FR and arc safe harness key features
- Vest-style Class A fall arrest harness with a single dorsal D-ring
- Flame Guard (FR) versions for welding, cutting and hot work
- Arc Breaker (Arc Safe) versions with dielectric dorsal D-ring and buckles
- Arc Breaker R version with a soft web dorsal D-ring
- Buckle choices: pass-through, tongue-buckle legs, QC chest or full QC
- Optional X-pad back pad (P version); eight sizes XS to 3XL plus Universal
Safety Direct MK1011110 harness specifications and sizing
| Manufacturer | Safety Direct Ltd., Sherwood Park, Alberta |
|---|---|
| Model | MK1011110 Flame Guard / Arc Breaker (64 SKUs) |
| Style | Vest style |
| Class | Class A fall arrest (per Safety Direct 2026 catalogue) |
| D-ring | Dorsal (back): standard on Flame Guard, dielectric (DB, DBQ) or soft web (R) |
| Arc Breaker versions | DB dielectric D-ring and buckles; DBQ dielectric D-ring, QC buckles; R soft web D-ring |
| Flame Guard versions | Pass-through; G tongue-buckle legs; GQ tongue-buckle legs, QC chest; P X-pad; Q QC buckles |
| Capacity by size | XS 80-110 lb, S 110-150 lb, M 120-190 lb, L 130-270 lb, XL 170-325 lb, 2XL 210-370 lb, 3XL 230-420 lb, U 115-250 lb |
| Sizes | XS, S, M, L, XL, 2XL, 3XL, U (Universal) |
Where the MK1011110 FR and Arc Breaker harness works best
Welding and cutting
Flame Guard webbing for hot work at height.
Electrical utilities
Arc Breaker with no metal D-ring at the back.
Fabrication shops
Flame-resistant harness for hot work areas.
Fast donning
QC buckle versions clip on and off quickly.
MK1011110 FR and arc safe harness questions and CSA status
Is the Safety Direct MK1011110 CSA certified?
Safety Direct's MH1011110 page lists the MK1011110 Kevlar versions and states that the line is certified to CSA Z259.10-18. The Arc Breaker versions are not on that page, so check their label for the CSA mark.
What is the difference between Flame Guard and Arc Breaker?
Flame Guard versions are flame resistant (FR) for welding and hot work. Arc Breaker versions are arc safe and use a dielectric or soft web dorsal D-ring instead of a standard metal one.
What worker weight does the MK1011110 fit?
It depends on size: XS 80-110 lb, S 110-150 lb, M 120-190 lb, L 130-270 lb, XL 170-325 lb, 2XL 210-370 lb, 3XL 230-420 lb, U 115-250 lb.
Does the MK1011110 have side D-rings?
No. Safety Direct lists it with a dorsal D-ring only, for fall arrest. For positioning choose a Class AP harness.
Pair the MK1011110 FR harness with a full system
Pair the MK1011110 with an FR or Kevlar shock-absorbing lanyard or self-retracting device and a rated anchor for a complete fall arrest system.