Molded case current transformers are suitable for current and energy measurement or relay protection in AC lines with a rated frequency of 50Hz and a rated voltage of 0.66kV and below. These molded case current transformers are widely used in integrated cabinet systems. They can be installed using either busbar fixing or base plate fixing methods, and are suitable for installation in any direction. The primary conductor can be a busbar or cable. Complies with standards: GB 20840.1, GB 20840.2.