Pepperl+Fuchs Z857 Zener Barrier, 2-channel, DC version, negative polarity, Working voltage 6 V at 10 µA, Series resistance max. 15.5 Ω, Fuse rating 200 mA, DIN rail mounting, Number of channels: 2-channel.

Pepperl+Fuchs Z857 Zener Barrier. The Zener Barrier prevents the transfer of unacceptably high energy from the safe area into the hazardous area.






Pepperl+Fuchs Zener Barriers – Cost Saving and Easy Mounting Ex-Protection
Zener barriers provide cost-saving Ex-protection for various applications in process automation systems. The amount of energy transferred to the hazardous location is limited to a safe level incapable of igniting the explosive atmosphere.

Pepperl+Fuchs Z-system Zener barriers from Pepperl+Fuchs are directly mounted on a 35 mm DIN-Rail. Through accessories, the required grounding can be done directly on the DIN mounting rail.

● Fast mounting on the DIN-rail
● Grounding directly connected with DIN-rail
● Separation of field loop by removing the fuse

Pepperl+Fuchs Z-system Zener barriers are available with high density up to 2 channels / 12,5 mm width. Variants with field replaceable fuses provide a convenient means of disconnecting or open-circuiting the instrument loop without interfering with the wiring, making commissioning and maintenance operations much easier.

Pepperl+Fuchs Z857 Zener Barrier