Vimpex Zener Barrier 2 Channel - PF-Z978

Vimpex Zener Barrier 2 Channel - PF-Z978The Zener Barrier prevents the transfer of unacceptably high energy from the safe area into the hazardous area. The zener diodes in the Zener Barrier are connected in the reverse direction. The breakdown voltage of the diodes is not exceeded in normal operation. If this voltage is exceeded due to a fault in the safe area the diodes start to conduct causing the fuse to blow.The Zener Barrier has alternating polarities i. e. interconnected zener diodes are employed and one side is grounded. The Zener Barrier can be used for both alternating voltage signals and direct voltage signals.Depending on the application increased or decreased intrinsic safety parameters apply for serial or parallel connection.Key FeaturesNominal resistance 600 ohmStar connectionDIN rail mountingAC version2-channelSeries resistance max 646 ohmFuse rating 50 mADegree of protection IP20Connection Screw terminalsCore cross-section max 2 x 2.5 mm2Mass approx. 150 gDimensions 12.5 x 115 x 110 mm 0.5 x 4.5 x 4.3 inch