Need a PSU that delivers stability and consistency in demanding industrial applications? Try this DIN rail power supply from Siemens. It's a three-phase device that performs consistently in load-drawing industrial tasks such as starting motors or fluorescent lights. The unit takes any voltage from 320 to 550V AC and transforms it to a carefully controlled output of 24V DC, with a ±3% variability, which you can use to run battery-powered equipment. A handy potentiometer makes it easy to adjust the output voltage between 24 and 28.8V DC to suit your needs.

• High efficiency of 90% means it produces minimal heat waste and relies on free air convection to keep cool
• Red, yellow and green LEDs provide clear status indication
• Mean time between failures of 485,437h makes it a long-lasting choice
• IP20 rating tells you it's touch-safe

It has wide-ranging electrical safety specs – you get overload, short-circuit and overvoltage protection to stand up to common current and voltage issues. The unit also has primary, secondary and galvanic isolation via a separate SELV circuit, so you can rest assured it's a safe option that poses little risk of electric shocks.