1.800.966.PSUI (7784)
508.384.1419
(outside the U.S.)
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Power Sources Unlimited is
ISO 9001:2008 Registered

Welcome to Power Sources Unlimited

Power Sources Unlimited, Inc. is a premier ISO 9001: 2008 supplier in North America for AC-DC Power Supplies, DC-DC Converters, DC UPS, Industrial Power, Medical Power, LED Power, Green Power and Telecom/Wireless Power for small, medium and large quantity OEM customers. Our commitment to selling high quality and synergistic power conversion products and dedication to the customer have positioned us as the supplier of choice in North America for NEW design requirements.
Power Sources Unlimited

New Product Showcase


Traco Power TXH 600 Series Protek PM 400 Series Cotek AEK 3000-HV Series Power Partners PMAM 115 Series
Traco TXH600 Series Protek Power PM400 Series Cotek AEK 3000HV Series Power Partners PMAM 115 Series
  • Universal input: 90–264VAC or 120–370VDC
  • Active power factor correction (>0.95)
  • High efficiency up to 93%
  • Current share function for up to 3 units in parallel
  • Adjustable output voltage
  • EMI/EMC compliance with EN 61000-6-3 and EN 61000-6-1
  • Rear side IEC-C14 line socket, including mains switch and fuse
  • 4 x 7” footprint with 1.58 inch low profile
  • 100–240VAC input with active PFC
  • Less than 30µA leakage current
  • 300 watt convection rating up to +50°C
  • 400 watt output with 7 CFM forced air
  • Standby output 5VDC at 100mA
  • EN55011 / 55022 Class B conducted emissions
  • Universal AC input / full range
  • Programmable output voltage (0% ~ 105%)
  • Programmable output current (0% ~ 105%)
  • High power density 16.3W / inch³
  • Forced current sharing at parallel operation
  • Constant current limit
  • Protection: OVP, OLP, OTP, SCP, fan failure
  • BF (Body Floating) rated
  • UL/EN60601-1 3rd edition
  • Class II construction for home health care
  • Class I with functional ground connection
  • Compact 2” x 4” footprint
  • 100uA @ 264VAC Earth leakage current
  • Up to 91% efficiency
  • No-load power consumption <0.5W (green power design)

Traco Power 2015 Shortform Catalog

Tri-Mag, LLC.


Traco Power's 2015 Product Shortform introduces 53 new products that expands their portfolio of state-of-the-art AC-DC and DC-DC power conversion products. As a leading power supply manufacturer of low power dc-dc converter, encapsulated ac-dc power modules, ac-dc power supplies (open frame / encased), industrial power supplies for DIN-rail mounting and high power ac-dc and dc-dc converters Traco Power continues their commitment to the design and manufacturing of superior quality industrial-grade power conversion products.

Click here to view Traco Power 2015 Shortform.


PSUI Partners with Tri-Mag, LLC.

Tri-Mag, LLC.


Power Sources Unlimited, Inc continues to expand it’s portfolio of highly-reliable, configurable and cost-effective power solutions with the announcement to partner with Tri-Mag, LLC. Tri-Mag has been manufacturing quality power conversion products, from EMI filters to power supplies since 1980. Offering a wide selection of standard power electronics and power systems along with custom design services to ensure we have the solution to meet the requirements of your application.
Click here to view our Tri-Mag line card.


PSUI Partners with ABSOPULSE Electronics Ltd.

ABSOPLUSE Electronics Ltd.


Power Sources Unlimited, Inc is pleased to announce that we have partnered with ABSOPULSE Electronics Ltd. With this partnership Power Sources continues to grow it’s portfolio of highly-reliable, configurable and cost-effective power solutions. ABSOPULSE Electronics Ltd. specializes in the design, development and manufacture of high performance switch-mode power supplies for rugged and extreme environments.
Click here to view our ABSOPULSE linecard.


UL/EN 60601-1 3rd Edition and 2x MOPP Approved Medical Power Solutions

Power Sources Unlimited Medical Application

Power Sources Unlimited, Inc. carries a vast selection of AC-DC power supplies and DC-DC converters with UL/EN 60101-1 3rd Edition and 2x MOPP approvals for patient vicinity medical and dental applications. Our line of power supplies are designed by skilled engineers to achieve the required low leakage current and reinforced isolation specifications required for medical applications, Click here to view our medically approved power conversion offerings.


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Power Sources Unlimited, Inc.
is a member of PSMA