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Product Overview

The Z787 is a 24V/93mA 2-channel DIN rail DC positive polarity Zener Barrier with diode return. This 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 a positive polarity, i.e. the anodes of the zener diodes are grounded. The Zener Barrier is for evaluation of signals from the hazardous area. The diodes of diode return prevent a current into the hazardous area, therefore the current assumption for intrinsic safety calculations is zero. Depending on the application, increased or decreased intrinsic safety parameters apply for serial or parallel connection.
  • IEC 60529 Protection degree
  • 327Ω Maximum series resistance
  • 50mA Fuse rating
  • IP20 Protection rating


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Product Information

  • Signal Conditioner Output -
  • No. of Output Channels 2
  • No. of Channels 2 Channel
  • Supply Voltage 28V
  • Operating Temperature Min -20 °C
  • Operating Temperature Max 60 °C
  • Signal Conditioner Input Voltage
  • Product Range -
  • SVHC To Be Advised
  • Accuracy % -

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Check stock and lead times
  • 4 Further stock expected to ship on May 4, 2016
  • More stock available week commencing 5/9/16

Contact me when back in stock

Price for: Each

Minimum order quantity: 1

Order multiple quantity: 1

Price: $211.25 $211.25



Quantity List Price
1 - 2 $211.25
3 - 4 $207.36
5+ $200.88

Legislation and Environmental

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