3M 3100551 Twin-leg Self-retracting Lifeline 6 Ft

Product Description

The 3M 3100551 is a twin-leg self-retracting lifeline (SRL) from the DBI-SALA Nano-Lok line, designed for personal fall arrest in industrial work environments. The unit weighs 7.45 pounds and features a compact thermoplastic housing measuring 13 inches long, 9.7 inches wide, and 4 inches tall. A quick-activating speed-sensing brake system locks within inches of fall initiation, making the 3100551 effective for low-height applications where a standard lanyard provides insufficient clearance. A swiveling anchorage loop and built-in connector allow direct attachment to most full-body harnesses without additional hardware. Licensed safety professionals and competent persons install and inspect this equipment per applicable fall protection regulations.

The 3100551 is suited for general industrial, construction, and maintenance applications where overhead anchor points are available. The twin-leg configuration supports 100 percent tie-off, allowing workers to move between anchor points without a period of unprotected exposure. The high-capacity external energy absorber and integrated impact indicator provide visible confirmation of fall-event loading, alerting supervisors that the unit requires retirement and inspection. The compact form factor makes it practical in confined or congested work areas where a bulkier SRL would interfere with movement.

Key Features

• Twin-leg configuration supports 100 percent tie-off during anchor transitions
• Quick-activating speed-sensing brake system arrests falls within inches
• High-capacity external energy absorber with impact indicator shows post-fall deployment
• Swiveling anchorage loop reduces cable twist and torque at the anchor point
• Built-in connector for direct harness attachment without additional snap hooks
• RFID equipped for compatibility with electronic inventory and inspection management systems
• Durable thermoplastic housing keeps weight at 7.45 pounds

Compatibility

Designed for direct connection to most full-body harnesses; the twin-leg configuration is compatible with overhead anchor applications requiring 100 percent tie-off.

Installation Notes

Installation and inspection must be performed by a competent person as defined under OSHA 29 CFR 1926.32 and applicable ANSI Z359 standards. Before connecting the SRL, verify the anchor point has adequate rated capacity and is positioned overhead to minimize free-fall distance and swing-fall risk. Inspect the housing, lifeline, energy absorber, and connectors for damage prior to each use. Any unit that has arrested a fall must be removed from service immediately and inspected before return to use.

Technical Specifications

• Lifeline Configuration: Twin-Leg
• Lifeline Length: 6 ft
• Unit Weight: 7.45 pounds
• Housing Length: 13 inches
• Housing Width: 9.7 inches
• Housing Height: 4 inches
• Housing Material: Thermoplastic
• UPC: 00648250242520

Standard Information

• Brand: 3M
• Manufacturer Part Number: 3100551