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


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

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Self Retracting Lifeline with RSQ™ Dual-Mode Design

3M's Ultra Lok™ series of self-retracting lifelines (SRL's) are robust and extremely lightweight devices that are precision engineered for safety, performance, and comfort that you can rely on. The Ultra Lok™ system is built to last with a semi-sealed design, an anti ratcheting brake system, and stainless steel components.

3M's SRLs are backed by decades of dependable service in the field for absolute confidence, safety, and reliability. An SRL lifeline will extend as the user moves away and automatically retract as they return. This flexibility allows the user to move within a limited safe working range at normal speeds. When a fall occurs, a speed sensing brake system activates to restrict both the fall and the forces exerted on the user.

Product Highlights

  • 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

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

Product Series:
Product Type:
Self Retracting Lifeline - Cable
Model Number(s):
Length Options:
50 ft. (3504551)
Harness Connection Type:
Housing Material:
Urethane Thermoplastic
Housing Type:
Lifeline Hook Material:
Zinc Plated Steel
Lifeline Length(s) (Imperial):
50 ft
Lifeline Length(s) (Metric):
15.2 m
Lifeline Material:
Stainless Steel Cable
Stainless Steel Cable
Mounting Type:
Block to Anchor Point
Recommended Industry:
ANSI Z359.1
Weight Capacity:
310 lbs. (141 kg)
Product Weight (Imperial):
19 lb.
UPC / GTIN Nos.:
00840779002191 ( SKU: 3504551)

Product Specification Disclaimer*( 1,2 )

*1. Manufacturers 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.

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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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