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Compact 1U open frame 120-W AC/DC power supply offers convection-cooled operation up to 75-W

April 17, 2012 // Paul Buckley

Compact 1U open frame 120-W AC/DC power supply offers convection-cooled operation up to 75-W

Murata Power Solutions has introduced the MVAB120 series of high efficiency, typically up to 91%, open frame single output 120 Watt power supplies aimed at a broad range of telecom and industrial applications.


Measuring 101.6 x 50.8 x 34.3 mm (2 x 4 x 1.35 inches), the low profile units satisfy the 1U height constraints of this industry standard footprint.

The high efficiency design of the MVAB120 ensures that waste heat is kept to a minimum and the units are capable of delivering up to 75 W using convection cooling only. Just 250 LFM forced airflow is required for the supply to operate at the 120 W full load output.

The series comprises three single output models covering the nominal outputs of 12, 24 or 48 VDC. Accommodating the full universal range of input voltages, from 90 to 264 VAC and 120 – 300 VDC, the MVAB120 also meets the EU PFC directive for active power factor correction. Safety approvals include the internationally recognized UL/EN/IEC 60950-1:2005 2nd edition standard for IT and commercial equipment. The units also comply with IEC/EN 61000 Class A and EN55022 Class B standards for emissions and immunity.

Suiting most operating environments, the MVAB120 series can deliver full load from -10 to + 50 degrees C, and is capable of start-up from temperatures as low as -20 degrees C.

Output protection features include overcurrent, overvoltage and overtemperature.

Visit Murata Power Solutions at www.murata-ps.com

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