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Rescue and Safer Systems of Work

Constant Rate Descender Devices (CRD)

The Ikar Constant Rate Descender is a highly-effective tool for safely loading and lowering users to ground floor level at a constant rate speed of between 0.9 – 1.5 metres per second.

Constant rate descenders |  Part of your work at height rescue equipment

It is also widely used as a casualty rescue system together with a ratchet mechanism, providing excellent rescue capabilities for emergency evacuation from a height.

It can be used by 1 or 2 people and with a variety of different rope lengths starting at 10m.

Product Specification






Constant Rate Descenders - 1 person & 2 Persons (Self Rescue)


Casualty Rescue Equipment

 Industry Accreditation / Standard 

EN341 & EN1496

User Benefits

The key product benefits include:

  • Brake mechanism – controls the speed the user is lowered
  • Ease of use
  • Robust and good lifespan
  • Adaptable
  • Portable

CRD's provide a safe way of loading and lowering users from height

The Ikar constant rate descender is ideal for use on various working at height environments such as on cranes, offshore wind turbines and chimneys.