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PLC Power Supplies

A programmable logic controller (PLC) is a specialised computer which has been adapted for the control of industrial processes such as robotic devices and assembly lines. PLC power supplies are components of PLCs that convert relatively high input source power into lower regulated voltages required for the internal circuitry in PLCs.

How do PLC power supplies work?
The PLC power supply gets input power from an external line voltage, which is usually fed through a control relay and filter external to the PLC. The line voltage is stepped-down, filtered, rectified, regulated, status-monitored and voltage and current protected. Some PLC power supplies are embedded with switches for selecting a particular programming mode or protecting the memory.

The resulting low DC voltage output powers the PLC’s various modules as well as the PLC's integral battery (which is used for memory back up). Should the input line voltage drop or the PLC power supply fail, the memory contents will not change thanks to the memory backup.

What are PLC power supplies used for?
PLC power supplies are essential components required to run a PLC.
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Part Details Brand Stock Manufacturer Series For Use With Line Voltage User Power Output Voltage Output Current Output Power Length Width Depth Minimum Operating Temperature Maximum Operating Temperature Dimensions
Mitsubishi PLC Power Supply F2-40BL Series FX2N Series Mitsubishi 185 F2-40BL FX2N Series - - - - - - - - - -
Mitsubishi PLC Power Supply FX3U Series MELSEC Series Mitsubishi 62 FX3U MELSEC Series - - - - - - - - - -
Omron PLC Power Supply CJ1W Series CJ1M Series, 85 → 264 V ac, 5 V dc, 24 V dc, 400 mA 14W 81.6 x 90 x 45 mm Omron 20 CJ1W CJ1M Series 85 → 264 V ac 5 V dc, 24 V dc 400 mA 14W 81.6mm 90mm 45mm 0°C +55°C 81.6 x 90 x 45 mm
Schneider Electric PLC Power Supply TSX Series Schneider Electric 18 TSX - - - - - - - - - - -
Wago PLC Power Supply 750 Series I/O Module, 24 V dc 64 x 12 x 100 mm Wago 18 750 I/O Module 24 V dc - - - 64mm 12mm 100mm 0°C +60°C 64 x 12 x 100 mm
Wago PLC Power Supply 750 Series I/O Module, 24 V dc 64 x 12 x 100 mm Wago 13 750 I/O Module 24 V dc - - - 64mm 12mm 100mm -20°C +60°C 64 x 12 x 100 mm
Schneider Electric PLC Power Supply TSX Series TSX17 Series Schneider Electric 11 TSX TSX17 Series - - - - - - - - - -
Omron PLC Power Supply CJ1W Series CJ1M Series, 85 → 264 V ac, 5 V dc, 24 V dc, 5 A 25W 81.6 x 90 x 80 mm Omron 10 CJ1W CJ1M Series 85 → 264 V ac 5 V dc, 24 V dc 5 A 25W 81.6mm 90mm 80mm 0°C +55°C 81.6 x 90 x 80 mm
Omron PLC Power Supply ZEN-PA Series Series ZEN, 100 → 240 V ac, 24V dc, 1.3 A 30W 90 x 70 x 56 mm Omron 10 ZEN-PA Series ZEN 100 → 240 V ac 24V dc 1.3 A 30W 90mm 70mm 56mm -10°C +60°C 90 x 70 x 56 mm
Omron PLC Power Supply CJ1W Series CJ1M Series, 19.2 → 28.8 V dc, 5 V dc, 24 V dc, 5 A 25W 81.6 x 90 x 60 mm Omron 9 CJ1W CJ1M Series 19.2 → 28.8 V dc 5 V dc, 24 V dc 5 A 25W 81.6mm 90mm 60mm 0°C +55°C 81.6 x 90 x 60 mm
Omron PLC Power Supply CJ1W Series CJ1M Series, 21.6 → 26.4 V dc, 5 V dc, 24 V dc, 2 A 19.6W 81.6 x 90 x 27 mm Omron 9 CJ1W CJ1M Series 21.6 → 26.4 V dc 5 V dc, 24 V dc 2 A 19.6W 81.6mm 90mm 27mm 0°C +55°C 81.6 x 90 x 27 mm
Siemens PLC Power Supply 3RX950 Series AS-I Power Supply Unit, 120 V ac, 230 V ac, 30V dc, 5 A 125 x 70 x 125 mm Siemens 9 3RX950 AS-I Power Supply Unit 120 V ac, 230 V ac 30V dc 5 A - 125mm 70mm 125mm - - 125 x 70 x 125 mm
MTL PLC Power Supply MTL5500 Series MPA550, 85 → 265 V ac, 24V dc, 120 mA 1.2W 15.8 x 118.8 x 133 mm
  • RS Stock No. 703-7078
  • Brand MTL
  • Mfr. Part No. MPA5500/RS
MTL 8 MTL5500 MPA550 85 → 265 V ac 24V dc 120 mA 1.2W 15.8mm 118.8mm 133mm -20°C +60°C 15.8 x 118.8 x 133 mm
Siemens PLC Power Supply 3RX950 Series AS-I Power Supply Unit, 120 V ac, 230 V ac, 30V dc, 3 A 125 x 50 x 125 mm Siemens 8 3RX950 AS-I Power Supply Unit 120 V ac, 230 V ac 30V dc 3 A - 125mm 50mm 125mm - - 125 x 50 x 125 mm
Mitsubishi Electric PLC Power Supply Q61 Series PSU Series, Q Series, 100 → 240 V ac, 5V dc, 6 A Mitsubishi Electric 6 Q61 PSU Series, Q Series 100 → 240 V ac 5V dc 6 A - - - - 0°C +55°C -
Schneider Electric PLC Power Supply Modicon M340 Series Modicon M340, 100 → 240 V ac, 24V dc, 4.5 A 36W Schneider Electric 6 Modicon M340 Modicon M340 100 → 240 V ac 24V dc 4.5 A 36W - - - 0°C +60°C -
Siemens PLC Power Supply 3RX950 Series AS-I Power Supply Unit, 120 V ac, 230 → 500 V ac, 30V dc, 8 A 125 x 120 x Siemens 4 3RX950 AS-I Power Supply Unit 120 V ac, 230 → 500 V ac 30V dc 8 A - 125mm 120mm 125mm - - 125 x 120 x 125 mm
ifm electronic PLC Power Supply AC1254 Series Series AS-i, 29.5 → 31.6V dc ifm electronic 4 AC1254 Series AS-i - 29.5 → 31.6V dc - - - - - -10°C +70°C -
Mitsubishi PLC Power Supply Q63 Series MELSEC Q Series, 24 V dc, 5V dc, 6 A 55.2 x 98 x 90 mm Mitsubishi 3 Q63 MELSEC Q Series 24 V dc 5V dc 6 A - 55.2mm 98mm 90mm - - 55.2 x 98 x 90 mm
PR Electronics PLC Power Supply 9400 Series, 21.6 → 26.4 V dc, 25.9V dc, 4 A 96W 109 x 23.5 x 104 mm PR Electronics 3 9400 - 21.6 → 26.4 V dc 25.9V dc 4 A 96W 109mm 23.5mm 104mm -20°C +60°C 109 x 23.5 x 104 mm
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