Moulded case current transformer for the measurement of AC currents up to 60A . This current transformer has been designed to meet the most demanding requirements , especially for protection relays . Ziegler Current Transformers or Ziegler CT's as they are better known are encased with polycarbonate housing . These are available for different ratings , VA burdens & Accuracy classes . with Accuracy classes 0.2 , 0.5 , 1 burdens from 1.5 to 10 VA . Bornika is the exclusive representative of Ziegler company, in purchasing , sales , consulting and distribution of industrial equipment and transformers , including ZiS 7 Measurement Current Tansformer(CT) , in low voltage.