... , Ukraine, Poland, UK. Italy, etc. WTO6 series surge protective device (in short :SPD, alias : surge protector, surge arrester) is suitable for TN-S,TN -C ... there is a failure release mounted on the module of surge protective device. When the SPD fails in breakdown for over-heat and ... :Circuit breaker: mcb, rccb, mccb, rcbo.AC contactor: LC1-D, GMC, CJ40, KT6023Fuse: NT00C/NT00/NT1/NT2/NT3/DII/DIIITime ...