• For Foundation™ fieldbus networks in hazardous areas

• Complete enclosure systems for 12 intrinsically safe spur connections

• Mount in Zone 1 (gas) or 21 (dust) with spurs connected into Zone 0

• Compatible with FISCO and Entity-certified fieldbus instruments

• Compact, modular construction

• Ergonomic mechanical design

• Pluggable system components, without ‘gas free’ constraints

• Optional, integrated surge protection for trunk and spurs

• Optional, integrated Isolation Switch for Trunk

The 9373-FB3 is a third-generation product, in a successful

range of Eaton Fieldbus Barrier Systems.  The field-mounted

enclosure contains a barrier that receives power and

FOUNDATIONTM fieldbus H1 communications via a non

intrinsically safe trunk and converts this to a number of

galvanically isolated, intrinsically safe, spur connections.

The trunk terminals are implemented as increased safety

(Ex e) and the spur terminals as intrinsically safe (Ex ia) for

connection to IS fieldbus instruments in IIC, Zone 0 hazardous

areas.  The spur connections are compatible with both FISCO

and Entity-certified field instruments.