3M DBI-SALA® 3504551 - RSQ™ Ultra-Lok™ Self Retracting Lifeline, Cable, 50 ft.

50 ft. (15.2m) of 3/16" (5mm) stainless steel wire rope with swivel snap hook and RSQ™ dual-mode.

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About this product

3M™ DBI-SALA® Ultra-Lok™ RSQ™ Self Retracting Lifeline, Cable

Ultra-Lok™ self retracting lifelines (SRL’s) are rugged, yet extremely lightweight and superbly engineered devices you can count on for safety, efficiency and comfort. Stainless steel components, an anti-ratcheting brake system and a semi-sealed design provide the user with a system built to last. Our SRLs are backed by decades of proven field service for absolute confidence, safety and reliability. An SRL’s lifeline will extend as the user moves away, and retract automatically enabling the user to move about within a recommended working area at normal speeds. Should a fall occur, a speed sensing brake system will activate stopping the fall and reducing the forces imposed on the user to safe levels.


  • RSQ™ dual-mode design
  • Rugged and extremely lightweight thermoplastic housing
  • Semi-sealed design
  • 50 ft. (15.2m) 3/16" (5mm) stainless steel cable lifeline
  • Stainless steel dynamic components
  • Internal energy absorption system
  • Anti-ratcheting twin disk brake system


  • 50 ft. (3504551)

3M DBI-SALA® 3504551 - RSQ™ Ultra-Lok™ Self Retracting Lifeline, Cable, 50 ft. - Specifications *( 1,2 )

Product Series:
Model Number:
Product Type:
Self Retracting Lifeline - Cable
Standards Approvals:
ANSI A10.32
50 ft. (3504551)
Housing Material:
Urethane Thermoplatic
Housing Type:
ISafe Equipped:
Lifeline Hook Material:
Zinc Plated Steel
Lifeline Material:
Stainless Steel Cable
Mounting Type:
Block to Anchor Point
Recommended Industry:

*1. Manufacturers specifications were 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.

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3M™ DBI-SALA® Ultra-Lok Self-Retracting Devices - Instruction Manual

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Self Retracting Devices Inspection and Servicing Guidelines

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ULTRA-LOK™ Self-Retracting Devices - Instruction Manual

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