When the job calls for a reliable and adjustable PSU, go with this DIN rail power supply from Siemens. It takes a voltage between 85 and 264V AC or 110 and 300V DC and transforms it into a stabilised load of 12V DC that's tightly controlled, no matter the external conditions. This makes the product handy for charging sensitive battery-powered devices that need a fluctuation-free supply. As there's a built-in potentiometer, it's easy to adjust the output voltage to suit your application. Thanks to the unit's 82% efficiency, you can be sure it wastes little energy as heat and relies on natural convection to stay cool.

• Green LED provides easy-to-spot status indication
• Works reliably in a temperature range between -20°C and +70°C
• IP20 approval means the terminals are touch-safe, so there's no shock risk
• Snap-on mechanism makes it easy to mount to a standard 35mm DIN rail
• Adjustable screw terminals achieve robust electrical connections

This PSU offers comprehensive electrical protections including a built-in fuse on the inputs, overvoltage shielding and short-circuit tripping with automatic recovery. This means you and your equipment are protected against surges in your supply, excess voltage and common current faults.