The 3M™ DBI-SALA® Nano-Lok™ Edge Twin-Leg Self-Retracting Lifeline (SRL) 3500234 is engineered for foot-level tie-off and leading edge applications, providing enhanced fall protection in high-risk environments such as construction, industrial, and oil & gas work. This twin-leg configuration ensures 100% tie-off, allowing seamless transitions between anchorage points for continuous fall protection.

Designed for direct attachment to most harnesses, this quick-connect SRL features an 8 ft (2.4 m) galvanized steel cable lifeline, delivering high durability and resistance to sharp or abrasive edges. Its compact thermoplastic housing keeps the unit lightweight and ergonomic, while the speed-sensing brake system activates instantly to stop falls within inches, making it ideal for low-height applications.

With a high-capacity external energy absorber, built-in impact indicators, and RFID tracking for inventory management, this ANSI Class 2 SRL meets the latest safety standards, ensuring optimal protection in demanding work environments.

Key Features

Twin-leg configuration – Ensures 100% tie-off, allowing seamless transitions between anchor points.
Designed for foot-level tie-off and leading edge applications – ANSI Class 2 rated for construction and industrial safety.
Compact and ergonomic design – Minimizes bulk while staying securely in place on the harness.
Quick-activating speed-sensing brake system – Stops falls within inches for enhanced protection at low heights.
Durable thermoplastic housing – Lightweight yet impact-resistant for long-lasting durability.
Galvanized steel cable lifeline – 8 ft (2.4 m) lifeline offers high abrasion resistance.
Built-in quick-connect attachment – Allows for direct mounting to the harness back D-ring.
High-capacity external energy absorber – Reduces fall forces to minimize injury risk.
Impact indicator – Provides quick visual inspection for prior falls.
RFID-equipped – Enables efficient inventory tracking and safety management.

Intended Use

The 3M™ DBI-SALA® Nano-Lok™ Edge Twin-Leg SRL is designed for professionals requiring continuous fall protection in leading edge and foot-level tie-off applications. Ideal for:

Construction – Ensures worker safety at heights with leading-edge-rated performance.
General Industrial Maintenance – Provides secure fall arrest in confined spaces and elevated platforms.
Oil & Gas Industry – Built to withstand harsh offshore and onshore conditions.
Infrastructure & Transportation – Ideal for bridge, highway, and rail maintenance.
Utility & Wind Energy Sector – Supports workers operating in challenging high-altitude environments.

Product Specifications

Model Number: 3500234
Lifeline Type: Twin-Leg Self-Retracting Lifeline (SRL)
Lifeline Material: Galvanized Steel Cable
Lifeline Length: 8 ft (2.4 m)
Housing Material: Nylon Thermoplastic
Housing Type: Durable Thermoplastic
Lifeline Hook Material: Zinc-Plated Steel
Mounting Type: Direct to Harness Back (Quick Connect)
Overall Length: 8 ft (2.4 m)
Product Color: Orange
Weight Capacity: 310 lbs (141 kg)
Unit Weight: 8.6 lbs (3.9 kg)

Certifications and Standards

CSA Z259.2.2 Type 1 – Certified for leading edge self-retracting lifelines.
OSHA 1910.140 – Compliant with general industry fall protection standards.
OSHA 1926.502 – Meets construction fall protection requirements.