Zener Barriers
Pepperl+Fuchs Z and SB Series

Cost saving protection in process automation automation systems!

Pepperl+Fuchs' wide portfolio of Zener barriers is designed for all applications including:

Single and multi-channel Zener barriers for DC and AC voltages facilitate the use of circuitry optimized for the particular application.

In general, zener barriers are connected to the equipotential bonding. Each zener barrier has its own connection for this purpose.

Pepperl + Fuchs SB System

The new Pepperl + Fuchs SB-System zener barriers provide single SB sockets and SB termination boards with six or ten sockets, which simply require a connection with the equipotential bonding – the equipotential bonding itself is connected automatically.

The Pepperl + Fuchs SB terminal bases and the SB termination boards offer the possibility of pre wiring. The Ex (hazardous) circuit remains isolated from the safe side until the zener barriers are plugged in during commissioning.

During maintenance activities the SB zener barriers can be replaced without disturbing the cabling. By pulling out the individual barriers the respective instrumentation circuits are safely disconnected.

The new safety barriers of the SB-System have replaceable backup fuses, which prevent the tripping of the built-in protective fuse – fitted to comply with standards – in the event of reverse polarity or an improper operating voltage. Due to these protections, the valuable zener barrier won't be destroyed.

Pepperl + Fuchs Z-System

SB-System This system consists of single SB-terminal bases or multi-sockets (SB-termination board) where the zener barriers (SB-barriers) are plugged in. The complete system is mounted on a 35mm DIN Rail.