RSP-320 Series - Release Notes

RSP-320 Series - low profile, economical, enclosed power supplies with PFC

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The RSP-320 Series was introduced to the RSP line of compact, general-purpose, economical 'light industrial level' power supplies. The RSP-320 series consist of 320 Watt, low profile (30mm), enclosed type, 1U switching power supplies with universal (works world-wide) AC input and an active PFC function. By reducing from the height from the original SP-320 series (50mm→30mm), RSP-320 are 40% smaller in size and 1~9% more efficient. The -30~+70°C operating temperature range is also wider than the -20~+65ºC range of the SP-320 series.

When comparing performance and size, RSP-320 series are generally superior to the SP-320, especially for end users with limited space for installation and who are seeking additional energy savings. With state-of-the-art, high frequency / high efficiency circuit topology, the RSP-320 series is equipped with an active Power Factor Correction (PFC) function (PF>0.95) and is up to 90% efficient. The series can provide full output power in ambient temperatures from -30°C up to 50°C (122ºF). Cooling is silent, fan-less, natural convection. Operates up to +70°C with some de-rating (see data sheets)

In order to operate more reliably in humid and dusty environments, the RSP-320 series are available with an optional conformal coating which provides basic protection from moisture and dust by applying a coating material on the PCB. The part number will read “RSP-320-(Voltage) CC.” Contact us for price and lead-time for these.

To meet the needs of LED display manufacturers, and others, seeking both a low profile design with low output voltages, RSP-320 series is available in 2.5V, 3.3V, 4V, and 5V (60A) models for optimal selection.

Built-in functions include fan speed control, protections for short circuit, overload, over voltage and over temperature. Simple ±10% voltage adjustment by easy to reach rheostat on terminal strip allows quick fine-tuning. All versions comply with UL, CUL, TUV, CB, and CE regulations that ensure users' safety. Additionally, RSP-320 is CCC approved (China Compulsory Certification).


The RSP-320 Series is available in a wide range of output voltages that include 3.3V, 7.5V, 13.5V, 15V, and 27 Volt. Contact us for price and lead-time for these.

The RSP-320 Series is widely used and applications include general industrial control systems, mechanical and electrical equipment, instrumentation, LED displays, or any system that requires a low profile, economical power supply.

RSP-320 Series Features at a Glance:

  • Priced Economically
  • Universal AC input - Full Range 88~264VAC
  • High efficiency (up to 90%)
  • Active PFC function (PF>0.95)
  • Simple ±10% voltage adjustment by easy to reach rheostat on terminal strip
  • 30mm low profile 1U design
  • Protections: Short circuit / Overload / Over voltage / Over temperature
  • Optional conformal coating
  • LED indicator for Power ON
  • Forced air cooling by DC fan that has speed control
  • Safety Standards: UL60950-1, TUV EN60950-1, CCC GB4943 approved
  • Certificates: UL / CUL / TUV / CB / CE
  • Dimensions: 215L X 115W X 30mmH (8.4“L x 4.5“W x 1.1“H)
  • RoHS Compliant
  • 3 year warranty

Related Links:

Comply with ROHS (Restriction of Hazardous Substances) and 2006/122/EC - PFOS (PerFluoroOctane Sulfonates)