Shunt Diode Safety Barrier for IFD-E(I.S)

Shunt Diode Safety Barrier for IFD-E(I.S)

SKU: Z728

Model Z728 is an intrinsically safe, zone-powered, Zener-diode barrier for use in conventional fire detection systems for protection within hazardous areas. Each Zone contains two stages of pulse-tested Zener or forward- connected diodes and an 'infa… Read More

Key Features
  • Simple installation onto standard DIN railing
  • Removable colour-coded terminals for easy connection, accommodate conductors up to 2.5mm²
  • Supports up to two zones of I.S. products
  • Input circuitry protected against reverse polarity
  • Can be used with the IFD-E(IS) industrial IR3 flame detector

Limited Availability

Description

Model Z728 is an intrinsically safe, zone-powered, Zener-diode barrier for use in conventional fire detection systems for protection within hazardous areas. Each Zone contains two stages of pulse-tested Zener or forward- connected diodes and an 'infallible' terminating resistor. In the event of an electrical fault in the safe area, the diodes limit the voltage that can reach the hazardous area and the resistor limits the current. A fuse protects the diodes, and the two stages of voltage limitation ensure continued safety if either stage should fail. No active output-current limiting circuits are employed. The unit is certified 'ia' for all zones and 'IIC' for all explosive atmospheres.

Download

Z728.pdf

Related Products