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Siemens has optimized the Sitop power supply portfolio with the redevelopment of the standardized Sitop PSU3600 dual with a twin 15 volt/3.5 ampere output. The compact dual voltage power supply Sitop PSU3600 dual ensures a stable +/-15 volt supply of connected loads or 2 different voltage levels, for instance, 12 and 24 volts. The new version of this device is more compact, has greater functionality and is now more suitable to the US market due to conformity to local standards.

This top hat rail power supply with its 42 millimeter wide metal housing is almost half the width of its predecessor. The two outputs can now be individually adjusted with a potentiometer to between 12 and 24 volts instead of the previous 14.5 to 17 volts. The wide-range input allows it to be connected to single-phase networks with 120 or 230 volt alternating current without switching over.

Combined outputs

The relevant serial connection on the two floating outputs means a positive and a negative power supply voltage of, for example, +/-15 volts can be generated. This special voltage is needed for, amongst other things, operational amplifiers or transducers. If required, the outputs on the Sitop PSU3600 dual can be used separately to supply different loads from just one power supply, for instance 12 and 24 volts direct current. In the new version, both outputs comply with NEC Class 2 (US standard for defining and protecting control circuits) and can therefore supply devices with an input requirement of less than 100 voltamperes. Conformity to NEC Class 2 makes it significantly easier to accept switchgear in the USA.