Hochiki Z787 Shunt Diode Safety Barrier

SKU
Z787
£125.47 £104.56
Hochiki Z787 Shunt Diode Safety Barrier
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The Hochiki Z787 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.


Key Features
> Simple installation onto standard DIN railing
> Removable colour-coded terminals for easy connection
> Can accommodate conductors up to 2.5 mm
> Supports up to two zones of I.S. products
More Information
ManufacturerHochiki
MPNZ787
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Description Hochiki Shunt Diode Safety Barrier
Product Code Z787
Usage: In conventional fire detection systems for protection within hazardous areas.n 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
Certification: The unit is certified 'ia' for all zones and 'IIC' for all explosive atmospheres
Device type:
Barriers
Lens colour:
No light
Tone specifiable:
No
Colour: Green
Hochiki Z787 Shunt Diode Safety Barrier