Zener Barrier Z928

Maflash Part No. 071857
The 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.


  • 1-channel
  • AC version
  • Working voltage 26 V
    at 10 μA
  • Series resistance max. 327 Ω
  • Fuse rating 50 mA
  • DIN rail mountable

Approval & Conformities