Fall arrest device MAS SK 12 with 5 m 12 mm rope, model 31805

The MAS SK 12 fall arrest device with a 5 m, 12 mm rope (model 31805) is a compact rope-based fall arrest solution intended for work at height. It provides a reliable connection between the user and an anchor point, guiding and arresting falls to reduce the force transmitted to the worker. Designed for professional use in construction, maintenance and industrial environments, the unit combines a robust housing and a flexible 12 mm rope to allow controlled deployment and retraction during typical vertical or inclined movement.

Advantages

The device offers automatic fall arrest capability with a smooth rope feed and quick locking action when a fall is detected. Its 12 mm rope balances flexibility and strength for ease of use and durability under repeated operation. The compact design simplifies handling and installation on scaffolds, beams or permanent anchor systems, while the materials used resist common jobsite wear and environmental exposure.

Suitable for

• Construction site personnel working on scaffolding, roofs or facades
• Industrial maintenance and service technicians performing elevated tasks
• Temporary works requiring a portable rope-based fall arrest connection
• Single-user fall arrest applications where reduced fall distance is needed

Key specifications

• Rope length: 5 metres
• Rope diameter: 12 mm
• Rope type: single-core/solid rope suitable for fall arrest (rope construction intended for arrest functionality)
• Operation: automatic fall detection and locking mechanism
• Device form factor: compact housing for portable use and site mounting
• Intended use: personal fall arrest for single user during work at height

How to use

Before each use inspect the device and rope for visible damage, cuts, abrasion or corrosion. Securely attach the device to a suitable anchor point rated for fall arrest, following applicable standards and site procedures. Connect the user harness to the rope end using an approved connector and adjust the system so the rope can feed out and retract freely during normal movement. If a fall occurs the device will lock the rope and arrest the fall; after any locking event remove the system from service and arrange professional inspection and, if required, replacement of damaged components.

Usage recommendations

Use only with compatible full-body harnesses and connectors rated for fall arrest. Do not exceed the manufacturer’s specified user weight or use the device for rescue unless explicitly permitted by the device documentation. Store the device in a dry, cool place away from direct sunlight and chemicals; follow periodic inspection intervals and professional recertification as required by local regulations and applicable standards.