Blocking unit in the case of earth leakage, type ZZS 500/1000
Application:Blocking unit in the case of earth leakage type ZZS 500/1000 serves for monitoring the insulating property of underground low voltage mains.
Earth leakage indicator for control circuits type IZS 42
Application:The earth leakage indicator type IZS 42 serves for monitoring state of insulation of control circuits of 42VAC rated tension. In conjunction with a control contactor all poles of the control circuit can be cut out should a fault i.e. ground leakage in the control circuit happen.
Protection - control circuit control unit type NZKT 1
Application:Protection - control circuit control unit type NZKT 1 for protective leads and supervises in underground circuits the protective wire of a lead for power failures and for cable shorts between protective lead and monitoring lead.
