... exported to Russia, Ukraine, Poland, UK. Italy, etc. surge protective devicesurge protectorCE certificatewidely exported to Russia, Ukraine, Poland, UK ... . Italy, etc. WTO6 series surge protective device (in short :SPD, alias : surge protector, surge arrester) is suitable for TN-S,TN ... there is a failure release mounted on the module of surge protective device. When the SPD fails in breakdown for ...