3M™ DBI-SALA® Smart Lock 25 ft. Self-Retracting Lifeline, Stainless Steel Cable - 3503875

The 3M™ DBI-SALA® Smart Lock Self-Retracting Lifeline is a revolutionary SRL that detects differences between a fall and normal work motion. The 3503875 SRL has a stainless steel lifeline that extends to a length of 25 feet. From decreasing lockups to simplifying inspections, the new Smart Lock SRL ensures safety and convenience when working at height.
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Increase your productivity with a smarter SRL

3M™ DBI-SALA® Smart Lock Self-Retracting Lifeline are our smartest SRLs yet. From reducing nuisance lockups to simplifying inspections, every detail of the new 3M™ DBI-SALA® Smart Lock Self-Retracting Lifeline is designed to help workers perform safely and conveniently.

We studied the forces applied to the SRL during typical at-height tasks using advanced motion capture technology. This data helped us engineer a new arrest mechanism that can more easily detect the difference between a fall and normal work motion, tailoring an SRL for your work application.

Product Highlights

  • Lightweight thermoplastic housing
  • Built-in carrying handle
  • Swiveling anchorage point and carabiner included
  • Patent pending dual label system located within ergonomic cable bumper stop to simplify inspections and reduce the need for replacement
  • Swiveling snap hook with impact indicator
  • RFID located in cable handle

3M™ DBI-SALA® Smart Lock 25 ft. Self-Retracting Lifeline, Stainless Steel Cable - 3503875 Specifications *( 1,2 )

Model Number:
Product Series:
Smart Lock™
Product Category:
Cable & Rope SRLs, Mounted SRL, Single-Leg SRL
Length Option:
25 ft.
ANSI Class Level
Class 1
Anchor Connection Type
Swivel Snap Hook
Anchor Hook Material
Zinc Plated Steel
Anchor Hook Material
Stainless Steel
Average Arrest Force (Imperial)
1125 lbf (ANSI), 1125 lbf (OSHA 130 lb - 310 lb)
Average Arrest Force (Metric)
5 kN (ANSI), 5 kN (OSHA 130 lb - 310 lb)
Carabiner/Hook Material
Stainless Steel
Case Quantity
1.0 per Case
Connected Safety ID Equipped
Harness Connection Type
Housing Material
Glass-Filled Nylon
Lifeline Connection Type
Snap Hook
Lifeline Hook Material
Stainless Steel
Lifeline Length (Imperial)
25 ft
Lifeline Length (Metric)
7.62 m
Lifeline Material
Stainless Steel
Maximum Arrest Force (Imperial)
1350 lbf (ANSI), 1800 lbf (OSHA up to 420 lb), 1350 lbf (OSHA 130 lb - 310 lb)
Maximum Arrest Force (Metric)
6 kN (ANSI), 6 kN (OSHA 130 lb - 310 lb), 8 kN (OSHA up to 420 lb)
Maximum Number of Users
Mounting Type
Overhead Anchor Point
Overall Length (Imperial)
25 ft
Overall Length (Metric)
7.62 m
Product Color
Product Series
Smart Lock
Product Type
Self-Retracting Lifeline- Cable
Recommended Application
Climbing, Inspection, Maintenance, Welding, Cleaning, Blasting
Specifications Met
ANSI/ASSP Z359.14-2021, 29 CFR OSHA 1926.502, 29 CFR OSHA 1910.140
Weight (Imperial)
16.61 lb.
Weight (Metric)
7.53 kg
Weight Capacity (Imperial)
420 lb.
Weight Capacity (Metric)
190 kg
Product Weight:
16.6 lbs.
Manufacturer Part No.:

Product Specification Disclaimer *( 1, 2 )

*1. Manufacturer's specifications are supplied by the manufacturer and are subject to change without notice. The data and information contained in these specification sheets are representative; the ratings supplied are suggested as guidelines and should only be used for evaluating your specific application.

**2. Although Reliable Electric Products Company Inc. has made every effort to ensure the accuracy of information by third parties, it is ultimately the customer’s responsibility to validate these specifications to ensure they are suitable for SAFE use in a particular application. Reliable Electric Products Company Inc. disclaims to the extent permitted by law, any warranty or liability.

Manufacturer's Extended Intended Use Disclaimer

3M industrial and occupational products are intended, labeled, and packaged for sale to trained industrial and occupational customers for workplace use. Unless specifically stated otherwise on the applicable product packaging or literature, these products are not intended, labeled, or packaged for sale to or use by consumers (e.g., for home, personal, primary or secondary school, recreational/sporting, or other uses not described in the applicable product packaging or literature), and must be selected and used in compliance with applicable health and safety regulations and standards (e.g., U.S. OSHA, ANSI), as well as all product literature, user instructions, warnings, and other limitations, and the user must take any action required under any recall, field action, or other product use notice. Misuse of 3M industrial and occupational products may result in injury, sickness, death, or property damage. For help with product selection and use, consult your on-site safety professional, industrial hygienist, or other subject matter expert.

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3M™ DBI-SALA® Smart Lock Stainless Cable Product Information

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3M™Smart Lock Self-Retracting Devices - User Instructions

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