To protect large electrical system from overload or to monitor large current loads by means of a metering instrument Current Transformer plays a very inportant role. It provides the necessary tools to capture the atual load current and reduces its values by means of transformation ratio to a minimum of safe value. Therefore, selection of accurate and reliable current transformers are very crucial. SES range of metering, measuring and protective current transformers are designed and manufactured to cater for wide range of applications. They are tested to IEC60044-1 2003-03 and are certified to ASTA &, CE Mark Certified to UL.