3M DBI-SALA Smart Lock Self-Retracting Lifeline, 20 ft. Galvanized Steel Cable – 3503872
The 3M DBI-SALA Smart Lock 3503872 is a 20-foot, single-leg self-retracting lifeline designed for professional fall-arrest applications requiring greater working range than a compact personal SRL. The system uses galvanized steel cable and a swivel snap hook to provide durable fall protection for construction, utilities, industrial maintenance, manufacturing, and other work-at-height environments.
The Smart Lock incorporates a speed-sensing braking system that allows normal worker movement while automatically engaging during a fall. An additional secondary locking mechanism helps reduce lifeline payout after the primary brake engages, contributing to controlled fall arrest and reduced stopping distance.
The 20-foot galvanized steel cable automatically extends and retracts as the worker moves, helping maintain tension on the lifeline and reducing excess line that could otherwise create a trip or snag hazard. The cable construction provides durability for demanding industrial environments where abrasion, repeated use, and exposure can make web lifelines less desirable.
An integrated swiveling anchorage connection allows the housing to rotate with worker movement, helping minimize cable twisting. The lifeline terminates in a self-locking swivel snap hook that provides a secure connection while further reducing cable twisting during use.
The Smart Lock housing is designed for demanding occupational environments and includes an ergonomic carrying handle for transport and installation. The system is rated for users up to 420 lb. when used in accordance with applicable 3M instructions and system requirements.
Manufacturer: 3M DBI-SALA
Product Series: Smart Lock
Manufacturer Part Number: 3503872
ORS Nasco Item Number: 098-3503872
UPC: 006482502393910
Lifeline Length: 20 ft.
Lifeline Material: Galvanized steel cable.
Configuration: Single leg.
End Connection: Self-locking swivel snap hook.
Maximum Capacity: 420 lb.
SRL Classification: Class 1.
Application: Personal fall arrest.
Available for purchase individually.
Performance Ratings and Certifications
| Standard / Specification | Rating |
|---|---|
| ANSI/ASSP Z359.14-2021 | Class 1 |
| OSHA 29 CFR 1910.140 | Compliant |
| OSHA 29 CFR 1926.502 | Compliant |
| Maximum Capacity | 420 lb. |
| Lifeline Length | 20 ft. |
| Lifeline Material | Galvanized Steel Cable |
| Configuration | Single Leg |
| End Connector | Swivel Snap Hook |
| Braking System | Speed-Sensing |
| Secondary Locking System | Smart Lock |
| Primary Application | Fall Arrest |