Looking for an efficient and compact power supply for machinery and plant engineering? This 3-phase switch mode unit from Siemens' SITOP range delivers excellent overload response from small dimensions of 90 (W) x 150 (D) x 145mm (H). It clips easily onto a DIN rail to help you build a neat and organised system, while up to 91.5% efficiency means it generates minimal heat inside the cabinet. For reliability, the device can handle 1.5 times the rated current during a brief functional overload.

• Operating temperature range of 0°C to +70°C for use in harsh industrial environments
• Safe to use in the presence of flammable gases or combustible dust
• Ripple and noise of 150 mV Pk-Pk for low energy wastage
• Adjustable output voltage between 24 and 28V lets you compensate for voltage drops
• Signalling contact offers easy integration into a plant monitoring system

A switch mode power supply uses switching devices to continually turn on and off at high frequency, which is more efficient than a linear power supply.