Switchmode power supplies

The PRO-M range of switchmode power supplies offers space saving of up to 50% and no ventilation gap is required between multiple units, so that the PRO-M will squeeze into tight switchboards or machines.

These switchmode power supplies are available in 10 different versions for single- and three-phase AC, and for DC operation. The universal input voltage range is from 85–264 VAC or 80–370 VDC for single-phase and 400-500 VAC or 450-800 VDC for three-phase. It is also permissible to power the three-phase versions with only two phases connected.

An extended operating temperature range of -25 to +70 °C increases the number of application possibilities, and output de-rating tables are provided for high-temperature operation. Redundancy and power sharing are achievable with up to five separate units without the need for external diode modules.

For power critical areas, the 10, 20 and 40 A single-phase power variants offer a near unity power factor of 0.98. This is especially important where high power requirements necessitate total network power factor correction.

A power boost of 120% is available for up to two minutes, which enables inductive and capacitive loads additional starting capacity. Protection is also provided against reverse DC from the load entering the power supply.

With international safety and EMC approvals, including the Australian and New Zealand C Tick, the PRO-M series can be used in all areas. The PRO-M has an MTBF of greater than 500,000 hours.