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Compact grey plastic DIN rail power supply unit with green LED indicator and screw terminals

SIEMENS

SIEMENS SITOP PSU100C 12V 24W DIN Rail Power Supply

SKU CH-SH2H-T1R5J

DIN-rail switching supply converts 85 to 264V AC or 110 to 300V DC to 12V DC at 24W with 2A continuous and 33A peak output

  • Product typePower Quality & Distribution
  • Wide input range 85 to 264V AC and 110 to 300V DC
  • Compact DIN rail design 30mm wide fits tight cabinets
  • Reliable 12V 2A output with 33A peak for start-up surges
  • Green LED status indicator shows OK at a glance
  • Operates from -20°C to 70°C for harsh environments

Compact DIN rail supply for control panels

The SIEMENS SITOP PSU100C delivers a regulated 12 V DC output at 24 W from a 100 to 230 V AC or 110 to 300 V DC input. It fits on a standard DIN rail inside enclosures rated to NEMA 1 and IP20, serving automation and building-system loads that require a stable low-voltage rail.

Convection cooled with green LED status

Natural convection handles the 24 W load without a fan, so acoustic noise is absent in normal operation. The unit tolerates an ambient range of -20 to 70 °C and maintains output with a hold-up time greater than 20 ms; ripple and noise measure 200 mV peak-to-peak and 40 mV RMS. Peak current capability reaches 33 A for brief inrush events.

Plastic housing and single-phase wiring simplify

The 30 mm wide plastic case leaves dense rail space for adjacent modules. A green OK LED gives immediate visual confirmation of output presence. Single-phase 50 to 60 Hz supply wiring keeps termination straightforward for panel builders.

How it compares

Measured against everything we stock in Electrical Enclosures & Cabinets, at today’s prices. Recalculated every night.

Price $100.99
Pricier than about 75% of the 1,411 comparable items (median $39.99).

Specifications

Product
Brand nameSIEMENS
Product typePower Quality & Distribution

Questions about this item

How do I mount the 30 mm wide DIN-rail unit and what step is often missed?

Clip the plastic case onto a standard DIN rail, then verify the green LED OK signal lights to confirm 12 V DC output is present.

Which part will need replacement first during continuous operation?

The internal electrolytic capacitors age fastest; plan replacement after several years at the upper end of the -20 to 70 °C range.

What limit appears first when the supply runs at 24 W continuously?

Output ripple reaches the specified 200 mV peak-to-peak before thermal protection engages at 70 °C.

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