Altech Search

Wide Input Compact Housing
Power Supply

Click here for entire online catalog.


Wide Input Compact Housing Power Supply

With the PSW family, AC/DC compact DIN rail switching power supplies with single phase wide input range,
Altech further expanded the power supply line. Built-in active PFC function, these high efficient power units
meet the harmonic current limitation per EN61000-3-2. Equipped with 180 to 550Vac single phase wide
input range, they can be used in general power system applications with single phase 230Vac input or can
capture two phases from the 220~550Vac three-phase power system, which can greatly increase the flexibility
of system deployment.

With up-to-date circuit design PSW series possess up to 93% of extremely high efficiency and can provide
100% power continuously at 50*C by only free air convection, or operate under 70*C ambient temperature
by suitable power derating. The compact design in width helps save the precious space on the rail and also
makes it up to 50% smaller in size compare to its predecessor models. Meanwhile, with wider input range the
PSW series also has 3% higher efficiency than corresponding models, which response to the trend of green
power with energy saving concept. Other standard functions include DC OK relay contact alarm signal output,
front panel DC voltage adjustment , as well as protection for short-circuit, overload (constant current mode,
shut down if over 3 seconds), over voltage, and over temperature. The PSW series comply with UL508,
IEC60950-1 (CB), and CE certificates and also meet the EMC requirements of heavy industrial immunity level
(EN61000-6-2). Suitable applications include industrial control system, semi-conductor fabrication equipment,
factory automation, electro-mechanical applications, and marine related installation.

  • Input voltage range: 180~550V AC; 254-780V DC
  • AC inrush current (typical):Cold start: 50A at 400V AC
  • DC adjustment range (typical): 12V: 12-15V, 24V: 24-29V, 48V: 48-58V,
  • Overload protection (typical): 105%-130% rated output
  • Over-voltage protection (typical): 16-18V for 12V model (PSW-120),
    31-37V for 24V model; 60-67V for 48V model
  • Setup, rise, time (typical): 2000ms, 70ms at full load and 230V AC (PSW-120)
    2000ms, 150ms at full load and 230V AC (PSW240/480)
  • Withstand voltage: I/P-O/P:3KV AC, I/P-FG:1.5KV AC, O/P-FG:0.5KV AC,
  • Working temperature: -20 to +70°C (-4° to +158°F),
    refer to output derating curve (PSW-120)
  • DC OK signal Relay contact
  • Safety standards: UL508 (PSW-240 pending)
  • EMC standards: Compliance to EN55011 (CISPR11), EN55022 class B,
    EN61000-4-2,3,4,5,6,8,11, ENV50204, EN55024,
    EN61000-6-2, EN61204-3, heavy Industry Level criteria A


  • Single and two phase wide input range 180~550VAC
  • Universal AC Input / Full Range
  • High efficiency up to 93% and low power dissipation
  • Protections: Short circuit / Overload / Overvoltage / Over temperature
  • Cooling by free air convection
  • DIN rail mountable
  • UL 508 (industrial control equipment) approved
  • EN61000-6-2(EN50082-2) industrial immunity level
  • Built-in DC OK relay contact
  • 100% full load burn-in test
  • 3 year warranty

Power Supplies PRODUCT SERIES selection chart
make a choice below

Power Supply Selection Guide

For more information contact Altech at:
908-806-9400 • 908-806-9490 (FAX) • • 35 Royal Road, Flemington, NJ 08822