The Canadian Standards Association (CSA) regulates the classifications for full body harnesses. A harness can have more than one classification, however, all full body harnesses must meet the requirements for class A Fall Arrest.

Class A Fall Arrest

Class A harnesses are designed to protect workers when they are six feet or more above the ground. They support the body during and after a fall. Dorsal (back) D-rings are used for fall protection. They slide on impact, keeping the worker in a upright position.

Class AD Suspension and Controlled Descent

Class AD harnesses are used to support and hold a worker while being raised and lowered. There is one sternal (front) D-ring and one dorsal (back) D-ring. The sternal D-ring is used for attachment to a descent device.

Class AE Limited Access

Class AE harnesses are designed to raise or lower a worker through a confined area. Shoulder D-rings serve as anchorage points for attaching an extraction yoke or other rescue device. The D-rings slide on the shoulder strap for optimal positioning of the worker.

Class AL Ladder Climbing

Class AL harnesses are designed for use with a certified fall arrester that travels on a vertical lifeline or a rail. Sternal (front) D-rings are used for attachment to the vertical system.

Class AP Work Positioning

Class AP harnesses will hold and sustain a worker at a specific location, allowing full use of the hands, while limiting any free fall to two feet or less. Side D-rings at waist level are used for positioning and restraint.