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MTL9121-IS product description:

• Intrinsically safe fieldbus trunk and spurs allows full live working in the hazardous area 

• 120mA output current: supports 8 x 15mA IS fieldbus devices per power supply

 • Fieldbus repeater • Multidrop isolators on single fieldbus link 

• 250V ac input/output/power supply isolation • Switch selectable terminator on host side 

• Fixed terminator on IS side 

• Switch selectable power for host side 

• Mountable in Zone 2

The MTL 9121-IS is a fieldbus repeater isolator which repeats the fieldbus signal from a safe area, Zone 2 fieldbus to an intrinsically safe fieldbus for connection to devices in Zone 1. The 9121-IS provides up to 120mA, typically powering up to 8 x 15mA field devices in Gas Group IIC.