The J93 Current Clamp can be used for measurements from 50 to 3500 A AC and from 50 to 5000 A DC., The current clamp is recognized automatically by the products QualiStar C.A 8331, C.A 8333, C.A 8336 and PEL 102,PEL 103. Safety: 600 V CAT IV and 1,000 V C