Series 3 Full Body Harness, Quick-Connect Chest, Tongue-Buckle Legs
The Guardian Series 3 harness with a quick-connect chest buckle and tongue-buckle leg buckles delivers premium comfort for long days at height: sleek snap-on padding, spring-loaded torso adjusters, and a built-in SRL connector loop layered onto the proven Series 1 platform. Available in M-L and XL-XXL and 3XL.
Certified to ANSI Z359.11-2021 and CSA Z259.10-2018, and compliant with OSHA 1910.140 and 1926.502, the Series 3 supports workers from 100 to 420 lbs under OSHA and CSA (130 to 310 lbs under ANSI), including all clothing, tools, and equipment. Tested in an ISO 17025 accredited laboratory.
Guardian Harness Sizing Chart
Height (ft) by Weight (lb)
Blocks overlap by design: in an overlap, either size fits. Approximate bands: Small 100 to 160 lb and 5 ft to 6 ft. M-L 130 to 240 lb and 5 ft to 6 ft 2 in. XL 180 to 300 lb and 5 ft 2 in to 6 ft 4 in. 2XL 240 to 360 lb and 5 ft 4 in to 6 ft 6 in. 3XL 300 to 420 lb and 5 ft 6 in to 6 ft 8 in. Guardian harnesses sold as Universal or S-L span the Small and M-L bands, and XL-XXL spans the XL and 2XL bands. Based on the manufacturer's published Guardian sizing chart; verify fit per the instruction manual before first use.
Who Needs This Product
The Series 3 is the harness for crews that wear their gear ten hours at a stretch: the snap-on shoulder padding and spring-loaded torso adjusters earn their keep by the second day, and the built-in SRL connector loop keeps the dorsal D-ring free for ladder systems or rescue attachment. The a quick-connect chest buckle and tongue-buckle leg buckles configuration suits crews that want fast donning, padded comfort, and the widest stocked size range in the Guardian line. Crews that need certified basics at a lower price point choose the Series 1.
Features
Every Series 1 feature, plus padding
Builds on the Series 1 platform: contrasting core webbing, captivated chest strap, impact indicators, lanyard keepers, and gray box stitching all carry over.
Snap-on shoulder padding
Low-bulk padding wicks and evaporates sweat while spreading load across the shoulders on long days.
Spring-loaded torso adjusters
Quick, precise torso adjustment that holds its setting through the shift.
Built-in SRL connector loop
Frees up the dorsal D-ring for ladder climbing or rescue by giving a personal SRL its own connection point.
Optional waist pad with removable belt
Adds breathable back support and tool bag stability when the job calls for it.
Dual impact indicators
Indicators deploy if the harness is exposed to excessive force, simplifying post-event inspection.
Sizes in This Configuration
| SKU | Description |
|---|---|
| 37117 | Series 3 harness, Quick-Connect Chest, Tongue-Buckle Legs, size M-L |
| 37118 | Series 3 harness, Quick-Connect Chest, Tongue-Buckle Legs, size XL-XXL |
| 37119 | Series 3 harness, Quick-Connect Chest, Tongue-Buckle Legs, size 3XL |
Technical Specifications
| SKU | 37117 / 37118 / 37119 |
|---|---|
| Series | Series 3 |
| Chest buckle | A Quick-Connect |
| Configuration | Quick-Connect Chest, Tongue-Buckle Legs |
| Sizes | M-L and XL-XXL and 3XL |
| Capacity, OSHA and CSA | 100-420 lbs including all clothing, tools, and equipment |
| Capacity, ANSI | 130-310 lbs |
| D-ring | Dorsal |
| Materials | Polyester and zinc-plated steel |
| Standards | ANSI Z359.11-2021; CSA Z259.10-2018; OSHA 1910.140; OSHA 1926.502 |
| Origin | Designed, tested, and assembled in the United States |
| Warranty | Guardian lifetime warranty against defects in material and workmanship |
Fit before the first step up. Adjust the harness so the dorsal D-ring sits between the shoulder blades, the captivated chest strap crosses mid-chest, and leg straps allow a flat hand but not a fist. If either impact indicator has deployed, the harness has seen excessive force: retire it immediately.
Compliance Standards
ANSI Z359.11-2021
Certified full body harness, tested to ANSI Z359.7-2019 requirements in an ISO 17025 accredited laboratory.
CSA Z259.10-2018
Certified for Canadian jobsites, with the 100-420 lbs CSA capacity range.
OSHA 1910.140 and 1926.502
Meets general industry and construction personal fall arrest system requirements.
Impact indicators
Dual deployment indicators support documented post-event inspection practice.
Typical Applications
Donning Overview
Donning must follow the Guardian Series 3 instruction manual. The sequence below is an overview only.
- Inspect first. Check webbing, contrasting core, stitching, D-ring, buckles, and both impact indicators before every use.
- Shake out and orient. Hold by the dorsal D-ring; straps fall into place without twists.
- Arms through. Put the harness on like a jacket, shoulder straps over both shoulders.
- Buckle the chest. Connect the captivated chest strap at mid-chest height.
- Buckle the legs. Connect each leg strap; snug so a flat hand fits but a fist does not.
- Adjust and check. Set the torso and leg adjustments, confirm the dorsal D-ring sits between the shoulder blades, and stow loose ends in the keepers.
Inspection and Retirement
Inspect before every use, and have a competent person perform a documented inspection at least every six months under ANSI Z359.2 practice. Remove the harness from service for any of the conditions below.
- Webbing: contrasting core showing through, cuts, fraying, abrasion, burns, or chemical damage.
- Impact indicators: either indicator deployed.
- Stitching: broken, pulled, or abraded gray box stitching at load-bearing junctions.
- Hardware: cracks, corrosion, or deformation of the D-ring or buckles.
- Labels: missing or illegible under the Velcro label cover.
Retirement triggers: any fall arrest event, a deployed impact indicator, core webbing showing, or any condition where the inspector cannot positively verify the harness is fit for service.
Fall ProtectionDistributors, LLC Free Tool · No Signup · OSHA 1926.502 Free Interactive Tool Fall Protection Calculator Pick your system. Run the math. Generate a plan. 1Pick Your SystemDetermine fall restraint vs. fall arrest based on your work surface, edge access, and clearance. 2Run the MathCalculate exact fall clearance required below the work surface for your SRL or lanyard setup. 3Generate a PlanGet a printable OSHA-compliant Fall Protection Plan structured around 29 CFR 1926.502(k).
Frequently Asked Questions
Guardian Series 3 Harness Submittals and Documentation
Guardian Series 3 Harness Instruction Manual (PDF)Donning, adjustment, configurations, and inspection criteria.Guardian Series 3 Harness Technical Data Sheet (PDF)Features, configurations, capacities, and the full compliance summary.Guardian Series 3 QC/TB Test Report (PDF)ISO 17025 accredited laboratory test results for this configuration.Guardian Series 3 QC/TB Declaration of Conformity (PDF)Manufacturer declaration of conformity to ANSI Z359.11.Guardian Harness Inspection Form (PDF)Printable competent-person inspection checklist for Guardian harnesses.Compatible and Related Products
- Guardian Series 1 Harness. The certified-basics line the Series 3 builds on.
- Guardian 10733 Suspension Trauma Strap 4-Pack. Add a trauma strap to every harness on the crew.
- Guardian 10900 Halo 11 ft Web SRL. Personal SRL for the built-in Series 3 connector loop.
Outfitting a Crew with Harnesses?
Buckle styles, sizing, and duty level decide the right configuration. Confirm your crew with us and we will make sure the right equipment ships together, based on the delivery location.
Call 863-703-4522 to talk to a fall protection specialist.
Guardian Fall Protection Manufacturer Warranty
Guardian warrants to the purchaser that all products are free from defects in material, workmanship, and design (when the design is Guardian's responsibility). This warranty does not cover conditions resulting from normal wear and tear, neglect, abuse, accident, or otherwise. Guardian's obligations under this warranty apply for the lifetime of the product and are limited to the replacement of the product only.
This warranty is not transferable and does not apply to product that is resold after having been put into service. The warranty is void if the product is changed or altered in any way, or if the product is used in a manner other than for which it is intended. No other person, firm, or entity is authorized to assume or assign for Guardian any other liability in connection with the sale or use of Guardian products. There are no implied warranties of merchantability or fitness for a particular purpose.
Source: Guardian Standard Terms and Conditions of Sale, Doc. 102 v3.0. Contact Guardian customer service at +1 (800) 466-6385 or through guardianfall.com for warranty claims and product support.
