In common with conventional Fieldbus Barriers, each

intrinsically safe spur is capable of supporting a FISCO or ‘Entity’

certified fieldbus device located in a Zone 0 or 1

hazardous area. The short-circuit protected spurs are

galvanically isolated from the trunk and require no protective

ground connection in the field.

The 9372-FB redundant fieldbus barrier is based on our

revolutionary 9370-FB range of products, which are supplied

as complete, factory-assembled enclosure systems that do not

require additional wiring, customised housings or complex

ancillary components. Electrical and mechanical aspects of the

design are integrated, providing the industry’s first complete,

ergonomic solution for ‘High Energy Trunk’ applications in

hazardous areas.

Uniquely, the key modular components of the system (Fieldbus

Barrier, Terminator and Surge Protectors) may be ‘hot-plugged’

by design and without gas-clearance procedures or separate

isolating switches. This virtually eliminates the risk associated

with hazardous area maintenance activities, speeds module

replacement and avoids the need for specialist operator training.

Optional features include pluggable surge protection

components for the fieldbus trunk and individual spurs.