PWS1000R Series Heavy Duty AC/DC Power Supplies (19" Rackmount Chassis)


  • Ultra-quiet
  • Power sensitive electronics without interference
  • Rugged and reliable to ensure years of safe and trouble free operation

The PWS1000R Series of rackmount power supplies provides 12, 24 or 48 Volts DC at 1000 Watts of continuous power from a 110 or 220 Volt AC source.

Circuit innovations reduce output ripple to levels previously available only from bulky and inefficient linear power supplies. Reliability features include an input fuse, thermal shutdown, current limiting and output short circuit protection with automatic recovery. An Output Over voltage Crowbar circuit protects any powered devices from excessive voltage in the event of a failure of the unit.

Extra features include adjustable output voltage audible and visual indicators for low input voltage, low output voltage, over temperature, overload and output on. Either 110 or 220 VAC input (Field Convertible) is available. The PWS1000R also features a four contact output terminal (two positive and two negative contacts) for easy connection of devices to the supply.

All rackmount units come standard with high quality digital output meters to allow monitoring of output current and output voltage. An optional Battery Back-up is also available.


  • Adjustable output voltage
  • Extremely rugged and well suited for marine and other demanding environments
  • Ultra-quiet low EMI operation
  • Audible & visual indicators for output overload, low input voltage, low output voltage & over-temperature
  • Over-temperature shutdown
  • Current limiting
  • Short circuit protection
  • Output over-voltage crowbar
  • Thermostatically controlled cooling fan
  • Standard Digital Volt/Ammeter
  • Optional Parallel output diodes available
  • Custom output voltages available(8V to 55V)
  • 3 year parts and labour warranty
  • Battery Charging (Rectifier) models available


  • Telecom Power Plants
  • Electric Utilities and Substations
  • Marine & other rugged environments
  • Base Station Power(Radio & Telecommunications)
  • Industrial Controls(OEM Applications)
  • Solar / Alternative Power Systems
  • Emergency Power Backup (UPS)
Electrical [Input]
Nominal Vac (ip) 110 220
Actual (Vac) 90-130 180-260
Input Amps (Max) 13.2(12V)
Input Fuse (MDA) 20A(12V)
Input Frequency 45-65 Hz
Noise on Input < 50mV
Electrical [Output]
Output Nominal (op) 12 24 48
Output Volts (DC) 13.6 ± 0.05 27.2 ± 0.05 54.4± 0.1
Output Amps 60cont./70peak 40cont./45peak 20cont./22.5peak
Output Adjustment(Vdc) ± 1.0V
Output Crowbar 16.0 ± 0.5V 32.0 ± 1.0V 63.9 ± 2.0V
Output Ripple & Noise < 50 mV
Transient Response < 1V for 50% Surge
(Line & Load)
< +/- 0.5%
Duty Cycle Peak 20% for 10min max
Continuous 100% for 24 hours per day
Efficiency > 80% @ Maximum Output
Environmental Specification
Operating Temp. Range -25° to +40°C @ maximum output
Derate Linearly 2.5% per °C from 40°C
(Optional -40°C extra wide temp. operation avail.)
Humidity 0 - 95% Relative Humidity
(non-condensing) with optional conformal coating
Audible Noise NONE - 0db @ 3 ft
Typical Service Life >10 years (87,600 hours)
Isolation Input-Case & input-output 1500VDC
Output - Case 500VDC(1500VDC @ 48V O/P)
Mechanical Specification
Length 13.5 in/ 34.3 cm
Width 19 in/ 48.3 cm
Height 2u (3.5 in)
Clearance 1 inch (2.5 cm) all around
Material Marine Grade Aluminium
Finish Black Anodize / Powder Epoxy Coat
Fastenings All 18-8 Stainless Steel
Weight 12 lb / 5.5 kg
Connections Four contact output terminals
Warranty 3 years
Safety cETLus to UL1012 & CSA22.2 Pending