ISI Range Harness
Discover the Extremus ISI Range Harness – IS 3521:2021 certified for superior fall protection. Built for durability, comfort, and safety in extreme work environments.
Uncompromised Safety. Certified Protection.
At Extremus Safety, we don’t just manufacture harnesses — we engineer lifelines. Our ISI Range Harness is meticulously designed to meet the most stringent safety standards, giving professionals the freedom to work at height with total confidence.
Built for industrial durability and extreme reliability, this harness is certified under the IS 3521:2021 standard, ensuring every component meets or exceeds the requirements laid out by the Bureau of Indian Standards (BIS).
All Harness Conforms to IS 3521:1999 ( Part -1)
Explore our ISI-certified full-body safety harnesses, engineered for specific applications such as fall arrest, tower climbing, descent, positioning, and confined space entry. All harnesses are compliant with IS 3521:2021 standards and built for industrial-grade protection.

Model :- ESPL -BA-01
Art No.: Class A
Application: Basic Fall Arrest
The Class A full-body harness is designed for basic fall arrest protection. It features a single dorsal D-ring for fall arrest and ensures the body is supported comfortably after a fall. Ideal for general-purpose height safety tasks across various industries.

Model :- ESPL-BL-01
Art No.: Class L
Application: Ladder & Tower Climbing
The Class L harness is specially designed for tower and ladder climbing. It includes:
Two front D-rings on the shoulder straps for use with fall arresters during ascent and descent.
One dorsal D-ring for fall arrest.
Perfect for telecom, utility, and infrastructure professionals working at height.

Model:- ESPL-DL-01
Art No.: Class D
Application: Controlled Descent
The Class D harness is engineered for controlled descent operations. It features:
One front D-ring for descent device attachment.
One dorsal D-ring for standard fall arrest protection.
Ideal for rescue operations, rope access, and utility work where descent from height is required.

Model :- ESPL-PL-01
Art No.: Class P
Application: Work Positioning
The Class P harness is designed for work positioning applications. It includes:
Two lateral D-rings at the waist for secure positioning and stability.
One dorsal D-ring for fall arrest backup.
Enables hands-free working on poles, towers, or vertical structures.

Model:- ESPL-EL-01
Art No.: Class E
Application: Confined Space Entry & Exit
The Class E harness is tailored for entry and exit in confined spaces. It includes:
Two sliding D-rings on the shoulder straps for easy vertical entry and rescue retrieval.
One dorsal D-ring for fall arrest protection.
Essential for tank work, manholes, silos, and confined space rescue operations.
Standard Lanyard Configuration
All ISI Range Harnesses come equipped with a standard 1.8-meter, 3-strand, 12 mm Polypropylene (PP) rope lanyard for reliable fall protection. Customizable lengths are also available upon request, including 2 meters and 3 meters.
Lanyard Connection Options:
Loop & Snap Hook: One end features a secure loop, while the other end is fitted with a snap hook for easy anchorage.
Loop & Scaffold Hook: One end with a loop and the other end fitted with a scaffold hook for larger anchoring points and structural connections.
Key Features
ISI Certified: Fully compliant with IS 3521:2021, assuring regulatory and industrial-grade safety.
Ergonomic Design: Built with user comfort in mind, the harness evenly distributes weight to minimize fatigue during extended use.
Durable Webbing: High-strength polyester webbing resists wear, UV exposure, and chemical damage.
Reinforced Stitching: Bar-tacked at critical points for maximum durability and load-bearing capacity.
Adjustable Fittings: Easily customizable to fit securely across various body types and work uniforms.
Shock-Absorbing Lanyard Compatibility: Seamlessly integrates with Extremus energy absorbers and fall arrest systems.
Heavy-Duty D-Rings: Forged steel D-rings for dorsal and side attachment points ensure strong, reliable anchorage.
Applications
The ISI Range Harness is ideal for:
Construction & Infrastructure
Telecom & Tower Maintenance
Wind & Solar Energy Installations
Industrial Maintenance
Utilities & Power Grids
Why Choose Extremus ISI Range Harness?
Because when it comes to working at height, there is no room for compromise. Extremus Safety harnesses are tested in real-world conditions and certified to protect in the most demanding environments. Whether you're scaling towers or working on scaffolding, our ISI Range Harness ensures you're always protected — always secure.
For Extremus Safety. For Extreme Conditions.
Trust your life to certified gear. Choose the Extremus ISI Range Harness — because your safety is our highest priority.