Ultra-Lok™ Self Retracting Lifeline - Cable

Description: 50 ft. (15.2m) of 3/16" (5mm) galvanized steel wire rope with swivel snap hook.


  • Rugged and extremely lightweight thermoplastic housing
  • Semi-sealed design


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.


Rugged and extremely lightweight thermoplastic housing

Compact and durable housing is easy to use, transport, store and is built to last.

Semi-sealed design

A gasket between the housing halves helps prevent contaminants from entering, extending the life of the device.

50 ft. (15.2m) 3/16" (5mm) galvanized steel cable lifeline

Abrasion resistant and extremely durable lifeline construction provides added field longevity.

Stainless steel dynamic components

The motor spring, fasteners, locking pawls, shaft, springs and rachet plate are stainless steel for added corrosion resistance to extend the life of the device.

Internal energy absorption system

Reduces the forces imposed on a fallen worker to safe levels.

Anti-ratcheting twin disk brake system

Stays locked on rigid and non-rigid (horizontal lifeline) anchors for added safety.

Constant moving brake system pawls

Helps prevent corrosion or freeze-up and provides an audio indicator of a functioning brake system for added safety.

Swiveling anchorage point

Stays in line with load for added security and allows use of a variety of standard carabiners.

Swiveling snap hook with impact indicator

Automatically locks and closes for added safety, swivels to limit lifeline twisting for ease of use and provides visual indication of fall arrest.

Reserve lifeline system

Maintains a reserve for shock absorption when the entire lifeline is extended for added safety.

Ergonomic cable handle equipped with i-Safe™

Provides added comfort and ease-of-use when making connections and holds an i-Safe™ RFID identification tag for recording and storing information on inspections.


Capacity 310 lbs. (141 kg)
Sub Brand Ultra-Lok™
Size 50 ft. (15.2 m)
Velocity Ship Yes
iSafe Equipped Yes
Lifeline Length 50 ft. (15.2 m)
Lifeline Hook Zinc Plated Steel
Housing Urethane Thermoplatic
Lifeline 3/16" (5mm) dia. 7x19 Galvanized Aircraft Wire Rope
Model 3504450
Physical Dimensions 11.60x7.90x3.40 (in)
Physical Weight 15.00 lbs (6.8kg)
Product Styles Single Lifeline
Product Types Standard/Traditional
Housing Type Thermoplastic
Lifeline Type Galvanized Cable
Mounting Type Block to Anchor Point
Weight Group Over 10 lbs. (4.5 kg)
Standards ANSI Z359.14, OSHA 1910.66, OSHA 1926.502, Capital Safety Gen. Mfg. Req., ANSI A10.32

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