Compact Busbar/Base Mounting Current Transformers- Series 18. A range of compact moulded case current transformers suitable for primary currents from 400A to 1600A with built-in sealable terminal covers. The current transformers are used to transform various primary currents into 5A or 1A standard secondary using up to 60 x 15 mm or 50 x 30 mm busbars. Alternatively you can also use cables up to 45 mm diameter. Built in sealable terminal covers Mounting feet supplied Narrow width- 85 mm Wide range of primary current Rated system voltage 0.72/3 kV Continuous current 1.2 x rated current Conforms to IEC185, BS 7626, BSEN 60044-1 and IEC 60044-1