The ISC 200S 250 kN is a lowering pulley designed for arborist rigging systems and controlled lowering of loads during tree work.

The pulley is part of the ISC 200 series, representing a new generation of arborist lowering pulleys developed in the United Kingdom. The construction uses hot-forged side plates made from high-strength aluminium alloy, optimized using modern stress analysis methods.

The new SafeLock locking mechanism is based on the proven SpringLock system and ensures reliable side plate closure while maintaining easy operation.

The redesigned frame construction allows more efficient load distribution during operation and significantly increases pulley strength under dynamic loads.

The colour-coded sheave allows quick identification of individual variants within the ISC 200 series.

The pulley is designed for arborist rigging, lowering branches and trunk sections, and building rigging systems.

Technical information

• MBS: 250 kN

• WLL: 50 kN

• Weight: 1887 g

• Max rope diameter: 16 mm

• Sheave colour: Orange

• Side plate material: Aluminium alloy (hot forged)

• Locking mechanism: SafeLock

• Certification: CE, UKCA

• Country of manufacture: United Kingdom