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Two New Power Supply Units from MEN Micro Offer Reliable Power Sourcing for Railway and Harsh Environment Applications

The PU20 and PU21 feature redundant power monitoring and inverse current protection

BLUE BELL, Pa., July 31, 2014 /PRNewswire/ -- MEN Micro Inc., a world-renowned provider of embedded computing and I/O solutions for mission-critical industrial, mobile and harsh environment applications, now offers two power supply units, the PU20 (DC) and the PU21 (AC), for reliable computer power sourcing required in onboard or wayside railway applications as well as other harsh environment applications. The redundant power monitoring and inverse current protection offered by these units help to secure a constant output of power in harsh environments.

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Designed with conformal coated electronics as well as a robust H15 rear connector, these new units are protected from both moisture and vibration. Both the PU20 and PU21 offer high functional reliability. Should power be lost for any reason, voltage is evenly distributed to the remaining working units, ensuring a consistent and constant current power output.

Developed according to EN 50155, both units are able to accommodate different voltage inputs on trains as well as on the tracks.  The PU20 automatically detects input voltage for 24, 72 and 110 VDC and can be manually configured for 36, 48, 74 and 96 VDC.  The PU21 offers a wide input voltage range from 100 VAC to 240 VAC.

Output power for each unit is 125 W at the standard output voltage of 5 V; while standby power is 5 W at 5 V, allowing users to start the power supply units with a wireless connection. An integrated microcontroller monitors the ports, voltage as well as temperature to ensure safety.

These pluggable power supplies are offered in single Eurocard format (3U) and are designed for use in 19" systems such as CompactPCI, CompactPCI Serial and VMEbus, and need only 6 HP at the front. They have an extended operating temperature of -40 degrees C to +85 degrees C.

Equipped for SIL applications, these new fail-safe units are also certified to S-9401.

Technical Specifications

  • 3U, 6 HP, 19" rack mountable
  • Output power 120 W without derating
  • Active power sharing
  • Equipped for SIL applications
  • -40 degrees C to +85 degrees C operation
  • Inverse current protection
  • Redundant output voltage monitoring
  • Conformal coating against dust and humidity
  • Fully EN 50155 and S-9401 compliant

Pricing for the PU20 (DC) or the PU21 (AC) is $565 per unit.  Delivery is six to eight weeks ARO.

For additional information, visit,PU20--PU21,mennewsinfo.pu20-pu21.html or contact Stephen Cunha, Phone: 215-542-9575; E-mail: [email protected].

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UPCOMING TRADESHOW: InnoTrans; Hall 6.2, Booth # 205; Sept 23-26, 2014; Berlin, Germany;

READER SERVICE INQUIRIES: Please forward all reader service inquiries to Stephen Cunha, MEN Micro Inc., 860 Penllyn Blue Bell Pike; Blue Bell, PA 19422; E-mail: [email protected].

About MEN Micro Inc.

Since its founding, MEN Micro has focused on innovation, reliability and flexibility to develop standard and custom computing solutions that employ the highest technology levels. The company's computing solutions are used in harsh mission- and safety-critical environments found in the transportation (rail, road, air, sea) and industrial (automation, power & energy, medical, mining) markets.

With more than 250 employees worldwide, MEN Micro provides a robust offering of highly reliable embedded COTS boards, rugged COMs, scalable box PCs, safe computers and supporting devices widely used in extreme environmental conditions.

In addition to its full customization support, the company's core competencies include x86 and RISC processor architectures, development rules for safe applications, analog I/O design, FPGA technology and Windows, Linux and real-time operating systems as well as RAMS and obsolescence management.

The company is certified to ISO 9001, ISO 14001 (environment), EN 9100 (aerospace) and IRIS (railway) quality management systems, provides systems according to ISO 7637-2 (road traffic) requirements and is a member of several industry associations, including VITA and PICMG.


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