3 Phase Current Transformers Range CT75 Series Current Transformers Miniature three phase current transformers suitable for primary ranges from 80-160A with 5A secondary. Supplied with terminal cover and CT140 Series Current Transformers Miniature three phase current transformers suitable for primary ranges from 250-630A with 5A secondary. Supplied with terminal cover and Moulded 3 phase CT105 Miniature three phase current transformers suitable for primary ranges from 100A – 250A with 5A secondary. Supplied with terminal Series 35 Current Transformers The range offers 3 current transformers in one moulded case, suitable for primary current from 40A to 800A using