High Frequency IGBT-based Switch-Mode Design

The MS Series utilizes the latest IGBT devices to drive down size and increase performance. The high frequency design delivers fast transient response and low output ripple. This performance coupled with Magna-Power's rugged current-fed power processing, enables confidence in even the most demanding applications.

Fully Programmable Power

All MS Series functions and features of are available and programmable from a variety of control methods, including:

  • Stepless front panel knobs
  • 37-pin isolated analog-digital I/O
  • Computer interface with software and drivers

Various programming interfaces are available, such as LXI TCP/IP Ethernet (+LXI), IEEE-488 GPIB (+GPIB), Edgeport USB, Accessory (+USB), RS485 Accessory (+RS485).

Broad Voltage-Current Range, Consistent Controls

Magna-Power Electronics MS Series is built on the same power processing modules as the TS Series, only packaged in a floor-standing cabinet with casters and expanding into higher power levels. The available The MS Series models covers a very wide output range, spanning from voltage levels up to 4000 Vdc (floating) and current levels up to 4500 Adc. Models 30 kW to 60 kW are available in a 38.5” high cabinet, while 75 kW models are available in a 49” high chassis.

Designed for Safety

MS Series power supplies have extensive diagnostic functions, including: phase loss, excessive thermal conditions, over voltage trip (programmable), over current trip (programmable), cleared fuse, and excessive program line voltage. When in standby or diagnostic fault, the AC mains are mechanically disconnected via an embedded AC contactor, providing confidence that the unit is only processing power when desired.

Scalable Master-Slave Operation

For maximum flexibility, all MS Series power supplies can be scaled a in master-slave configuration for higher voltage or current output. Using the plug and play Universal Interface Device (+UID47), units are tied together in via their 37-pin I/O, allowing an increase in system current when configured in parallel or increase in system voltage when configured in series—up to the power supply's output isolation rating.

Extensive Programming Support and Included Software

All MS Series power supplies come standard with a National Instruments LabVIEW™ and LabWindows™/CVI drivers. In addition, an IVI driver is included supporting Visual C++, Visual C#, Visual Basic .NET, MATLAB, Measure Foundry, PAWS, Visual Basic 6.0, and Agilent VEE Pro. A Standard Commands for Programmable Instrumentation (SCPI) command set is also supported, allowing programming using raw ASCII commands. Finally, Magna-Power's RIS Panel software is provided allowing for a virtual control panel controlling the power supply via any of the available communication interfaces.


There are hundreds of possible configurations for the MS Series product. Using the following ordering guide and models chart to define the best model for your application. Need less power? Visit our TS Series product line. Need more power? Visit our MT Series product line.

Model Ordering Guide

Models Chart

The following chart details the available standard MS Series models. The Current Maximum (Adc) column is separated by the available power levels. To determine the appropriate model, first select your output Voltage Maximum (Vdc) to find appropriate row. Next, select one desired Current Maximum from the row that contains your desired Voltage Maximum. Then, construct your model number according to the model ordering guide, above. Non-standard voltage and current configurations are available.

  30 kW 45 kW 60 kW 75 kW    
Voltage Maximum Current Maximum Ripple (mVrms) Eff. (%)
5 2700* 3600* 4500* N/A 50 86
10 2700* 3600* 4500* N/A 40 86
16 1800 2700 3600 4500 35 86
20 1500 2250 3000 3750 40 86
25 1200 1800 2400 3000 40 86
32 900 1350 1800 2250 40 86
40 750 1125 1500 1875 40 87
50 600 900 1200 1500 50 87
60 498 747 996 1245 60 87
80 372 558 744 930 60 87
100 300 450 600 750 60 87
125 240 360 480 600 100 87
160 186 279 372 465 120 87
200 150 225 300 375 125 87
250 120 180 240 300 130 88
300 96 144 192 240 160 88
375 78 117 156 195 170 88
400 72 108 144 180 180 88
500 60 90 120 150 220 88
600 48 72 96 120 250 88
800 36 54 72 90 300 88
1000 30 45 60 75 350 88
1250 24 36 48 60 375 88
1500 19.8 27.7 39.6 49.5 400 88
2000 15.0 22.5 30.0 37.5 450 88
3000 9.6 14.4 19.2 24.0 500 88
4000 7.2 10.8 14.4 18.0 550 88
  Input Current Per Phase (Aac)    
208/240 Vac, 3Φ 108 162 216 270    
380/415 Vac, 3Φ 60 90 120 150    
440/480 Vac, 3Φ 54 81 108 135    

For models with the High Slew Rate Output Option (+HS), ripple will be higher. Models marked with an asterisk (*) are special low-voltage high-current models that may vary in size and input current from the standard MS Series models in the same power envelope. Contact your local sales partner for additional details.


Nominal Voltage
3 phase, 3 wire + ground
208 VAC (operating range 187 - 229 VAC)
240 VAC (operating range 216 - 264 VAC)
380 VAC (operating range 342 - 440 VAC)
415 VAC (operating range 373 - 456 VAC)
440 VAC (operating range 396 - 484 VAC)
480 VAC (operating range 432 - 528 VAC)
Frequency 50-60 Hz (operating range 45 Hz to 66 Hz)
Power Factor Greater than 92% at maximum power
Output Specifications
Ripple See Model Charts
Line Regulation Voltage Mode: ± 0.004% of full scale
Current Mode: ± 0.02% of full scale
Load Regulation Voltage Mode: ± 0.01% of full scale
Current Mode: ± 0.04% of full scale
Load Transient Response 2 ms to recover within ±1% of regulated output with a 50% to 100% or 100% to 50% step load change
Efficiency ≥ 86% (See Model Charts)
Stability ± 0.10% for 8 hrs. after 30 min. warmup
Isolation User inputs and outputs: referenced to earth ground.
Maximum input voltage to ground: ±2500 Vac
Maximum output voltage to ground:
±1000 Vdc for models less than or equal to 1000 Vdc,
±(2000 Vdc + Vo/2) for models greater than 1000 Vdc or with High Isolation Output Option (+ISO) where Vo is the maximum output voltage of the power supply.
Maximum Slew Rate Standard Models:
100 ms for an output voltage change from 0 to 63%,
100 ms for an output current change from 0 to 63%.
With High Slew Rate Option (+HS):
4 ms for an output voltage change from 0 to 63%,
8 ms for an output current change from 0 to 63%.
Bandwidth Standard Models:
3 Hz with remote analog voltage programming,
2 Hz with remote analog current programming.
With High Slew Rate Option (+HS):
60 Hz with remote analog voltage programming,
45 Hz with remote analog current programming.
Physical Specifications
Power Size (H" x W" x D") Weight
30 kW 31.5 x 24 x 31.5 (80.0 x 55.58 x 80.0 cm) 280 lbs (127.01 kg)
45 kW 51 x 24 x 31.5 (129.5 x 61.0 x 80.0 cm) 395 lbs (179.17 kg)
60 kW 51 x 24 x 31.5 (129.5 x 61.0 x 80.0 cm) 510 lbs (231.33 kg)
75 kW 51 x 24 x 31.5 (129.5 x 61.0 x 80.0 cm) 645 lbs (292.57 kg)
Control Specifications
Voltage Programming Accuracy ± 0.075% of full scale voltage
OVT Programming Accuracy ± 0.075% of full scale voltage
Current Programming Accuracy ± 0.075% of full scale current
OCT Programming Accuracy ± 0.075% of full scale current
Voltage Readback Accuracy ± 0.2% of full scale voltage
Current Readback Accuracy ± 0.2% of full scale current
External Analog Programming and Monitoring Levels 0 - 10 Vdc
External Analog Output Impedances Voltage output monitoring: 100 Ω
Current output monitoring: 100 Ω
+10 Vdc reference: 1 Ω
External Digital Programming and Monitoring Limits Input: 0 to 5 Vdc, 10 kΩ input impedance
Output: 0 to 5 Vdc, 5 mA drive capacity
Remote Sense Limits 3% maximum voltage drop from output to load
Operating Temperature 0°C to 50°C
Storage Temperature -25°C to +85°C
Ambient Temperature 0 to 50°C
Temperature Coefficient 0.04%/°C of maximum output voltage,
0.06%/°C of maximum output current.
Air Cooling (Standard) Front air intake, top exhaust
Water Cooling (Optional) 25°C maximum inlet temperature
1.5 GPM minimum flow rate for 15 kW units
3.0 GPM minimum flow rate for 20-30 kW units
4.5 GPM minimum flow rate for 45-75 kW units
80 PSI maximum pressure
1/4” NPT female pipe size


For maximum flexibility, all front panel function and controls have equivalent programming and monitoring functions on the included rear 37-pin analog-digital I/O connector and on the computer programming interface.

A Version Front Panel (MSA)

The A Version front panel provides a digital display with rotary front panel input, isolated 37-pin analog-digital I/O, and a RS232 computer interface.

D Version Front Panel (MSD)

In addition to the features of the A Version front panel, the D Version front panel provides digital 10-key entry, auto-sequencing with memory capability, and modulation for non-linear power profile emulation.

C Version Front Panel (MSC)

The C Version front panel is blank, providing only a switch to enable control power. All control must be performed by the provided isolated 37-pin analog-digital I/O or through a computer interface.

  • Engages and disengages main power
Meters display output voltage, output current, voltage set point, current set point, over voltage trip, and over current trip
Over voltage trip and over current trip setting potentiometers
  • POWER: Indicates power output
  • STANDBY: Indicates control power only
  • REM SEN: Remote sense enabled
  • INT CTL: Front panel start/stop/clear enabled
  • EXT CTL: External start/stop/clear enabled
  • ROTARY: Front panel rotary knob input
  • KEYPAD: 10-digit numeric keypad control
  • EXT PGM: External analog voltage-current control
  • REMOTE: Computer control
Diagnostic Alarms
  • LOCK: Interlock
  • PGM LN: External input voltage beyond limits
  • OVT: Over voltage protection has tripped
  • OCT: Over current protection has tripped
  • THERM: Over temperature condition
  • PHASE: Under voltage AC input
  • FSE: Warns that a fuse has cleared
  • ARM: Indicates power supply is ready for or operating in auto-sequencing
Power switch energizes control circuits without engaging main power Diagnostic Alarms
Stepless rotary knob to set voltage-current
Function Keys
  • MENU: Selects function
  • ITEM: Selects item within function
  • V/I DIS: Displays voltage-current settings
  • TRIP DIS: Displays OVT and OCT setting
  • CLEAR: Clears settings or resets fault
  • ENTER: Select item
Memory location indicator, used for auto-sequencing applications
Digital input keypad

Front Side Dimensions

Rear Side Dimensions

Front panel dimensions diagram references to "a" correspond to values in following table:

Power a
30 kW 27.00"
45 kW 46.75"
60 kW 46.75"
75 kW 46.75"
Front Panel Controller
Air Exhaust Fans
Front Air Intake (Air Cooled Models Only)
DC Output Bus (See Details Below)
Connections for External Control
Input AC Connections (4-wire)
Qty (4) 3-8/16 2” Studs
(4) Casters: (2) Locking, (2) Non-Locking

Note: Additional diagrams available for download of MS Series units with Water Cooling +WC option.

High Voltage Output Bus
Models Above 1000 Vdc

Medium Voltage Output Bus
Models 80 Vdc to 1000 Vdc

Low Voltage Output Bus
Models below 80 Vdc


The following options are available for the MS Series programmable DC power supply:


DC Power Cabling, Terminated

Utilizing Magna-Power's internal cable manufacturing operations, custom-made DC power cables are offered as an accessory. 



High Isolation Output
Available for models rated for 250 Vdc to 1000 Vdc, the +ISO option extends the output isolation, used when the application demands floating or tying units in series beyond the standard 1000 Vdc output isolation rating.


High Slew Rate Output
The high slew rate option is a control modification and replaces the standard output stage with one of low capacitance film and/or aluminum electrolytic capacitors, capable of high RMS currents. This stage provides higher bandwidth with faster output rise and fall times.


IEEE-488 GPIB Interface
Full control of the product's features and diagnostics over a IEEE-488 GPIB interface. The GPIB interface allows up to 15 devices may be connected to one bus and is compatible with all Magna-Power provided software and drivers.


LXI TCP/IP Ethernet Interface
Full control of all the product's features and diagnostics over a LXI Class C Certified TCP/IP Ethernet interface. Includes an embedded web server and compatibility with all Magna-Power provided software and drivers.


RS-422 or RS-485 Converter (Accessory)

The RS-232 to RS422 or RS-485 converter is an external industrial accessory to convert the power supply's standard RS-232. Unlike converters which require programming hardware handshaking signals to control RS-485 or RS-422 operation, the +RS485 option provides automatic control.



Universal Interface Device (Accessory)

The UID47 accessory eases master-slave parallel or series configuration of Magna-Power DC power supplies, enabling near equal current or voltage sharing, depending on the configuration. The accessory includes the UID47 with integrated circuitry and (2) 6-ft DB37 cables.



USB Edgeport Converter (Accessory)

The +USB Edgeport Converter plugs directly into the product's RS232 port, creating a virtual serial COM port over USB. The converter is tested with the product by Magna-Power at time of production.



Water Cooling
Water cooling is available instead of the standard air cooling. Water cooled units are fully enclosed and to not take in any external air, making them ideal for corrosive environments, densely packed cabinets or setups where water is readily available.

How to Buy

For the fastest product and pricing information, please complete the form and the Magna-Power team will address the request immediately.


Magna-Power products are made-to-order with build-times that vary depending on the model's maximum power rating. Current build-time schedules are as follows:

All Models

6 weeks

Sales Partners

In the USA and Canada, Magna-Power sells it products directly from the factory, with a nationwide network of technical representatives. Magna-Power products are available available worldwide through direct sales offices and authorized distributors. Requests from this form will either be quoted directly or automatically routed to the appropriate sales partner for quote.

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