Eaton MTL

MTL Instruments Group


Intrinsically Safe Power Supplies

The 949x-PS range of MTL intrinsically safe (IS) isolated power supplies are ideal for providing power to instrumentation in hazardous process areas. They offer a wide range of different IS output voltages, ranging from 4.8V - 17.7V, offering flexibility of options to best suit a variety of applications. The 9492-PS-PLUS is the preferred method for supplying 947x-ET/G and 946x-ET ranges of MTL IS Ethernet devices to provide direct power or IS Power over Ethernet (PoExTM), a method which allows a single cable to provide both the data connection and electrical power to devices, in turn, reducing installation costs.

  • Wide range of output voltages 4.8V - 17.7V
  • Wide operating temperature range of -40 ̊C to +70 ̊C for 9492-PS-PLUS and 9493-PS-xxx
  • Zone 2 mountable
  • DIN-rail or backplane mounting
  • ATEX / IECEx certified

Additionally, the 9491-PS is FM and FMC approved for installation in Class 1 Division 2 hazardous locations with the Ex ia output certified for connection into Class 1 Division 1 Groups C, D hazardous locations. The 9493-PS-xxx provides versions for connections into both Gas Group IIB and Gas Group IIC hazardous areas.

For product certificates

Product Code Description Downloads

intrinsically safe logo Symbol denotes that the equipment is suitable for use in hazardous area applications.
fsm logo Symbol denotes that the product has been assessed for functional safety applications

9491-PS   IS power supply Ex ia/ib IIB, Uo 12.4V Datasheet  Manual  File
9491-PS-PLUS   IS power supply Ex ia/ib IIB, Uo 12.4V Datasheet 
9492-PS-PLUS   IS power supply Ex ia/ib IIB, Uo 12.8V Datasheet  Manual 
9493-PS-XXX   IS power supplies Ex ia IIB or IIC, Uo 5.4 to 18V Datasheet  Manual