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Advanced Test and Measurement
Instruments and Power Supplies

BK Precision MDL4UB Series

DC Electronic Load modular series

Images for illustrative purposes only. Please refer to product details. Click on the main image for a larger view and to see image descriptions.

The MDL4UB Series is a multi-channel modular programmable electronic load system in a compact 4U form factor. Nine different modules of programmable DC loads ranging in power from 200 W to 600 W provide users the flexibility to test a wide range of power sources from multi-output DC power supplies to batteries, fuel cells, and photovoltaic arrays.

The mainframe has four slots that can be populated with any combination of the modules up to 2400 W (up to 4800 W with mainframe extension). The high-performance electronic load modules of the MDL4UB Series are capable of operating in constant current (CC), constant voltage (CV), constant resistance (CR), and constant power (CW) mode.

  • Modules offer wide voltage and current range, 0 to 600 V, 0 to 120 A
  • Support for up to 4 modules/8 channels or 8 modules/16 channels with mainframe extension
  • Transient mode up to 25 kHz
  • Synchronous load on/off function
  • Adjustable slew rate in CC mode
  • LabVIEW drivers and operating software included
  • Standard LAN, GPIB, USB, and RS232 interfaces with USBTMC/SCPI protocol support
  • Short circuit test simulates a short at the input
  • Built-in 16-bit resolution voltage and current measurement (0.1 mV, 0.01 mA)
  • Remote voltage sensing to compensate for the effect of voltage drop in wires
  • Operate identical modules in parallel mode for high current applications
  • OVP/OCP/OPP/OTP and reverse voltage protection

The MDL4UB modules use the same mainframes as the MDL4U

Product Variants

Model Price

MDL4U001

DC Electronic Load Mainframe 4U 		POA

MDL4U002

DC Electronic Load Mainframe Extension 		POA

MDL4U102B

DC Electronic Load Dual-Channel DC Load Module, 80 V / 20 A / 150 W, Front Input 		POA

MDL4U200B

DC Electronic Load Single-Channel DC Load Module, 80 V / 40 A / 200 W, Front Input 		POA

MDL4U252B

DC Electronic Load Dual-Channel DC Load Module, 80 V / 20 A / 250 W, Front Input 		POA

MDL4U302B

DC Electronic Load Dual-Channel DC Load Module, 80 V / 45 A / 300 W, Front Input 		POA

MDL4U305B

DC Electronic Load Single-Channel DC Load Module, 600 V / 20 A / 300 W, Front Input 		POA

MDL4U400B

DC Electronic Load Single-Channel DC Load Module, 80 V / 60 A / 400 W, Front Input 		POA

MDL4U502B

DC Electronic Load Dual-Channel DC Load Module, 600 V / 15 A / 250 W, Front Input 		POA

MDL4U505B

DC Electronic Load Single-Channel DC Load Module, 600 V / 30 A / 500 W, Front Input 		POA

MDL4U600B

DC Electronic Load Single-Channel DC Load Module, 80 V / 120 A / 600 W, Front Input 		POA
No options were found. Sometimes this is because the options list is too extensive and complex to list. Please refer to the data sheet and contact us if you can't find what you're looking for.
No results found in this category. For some products this is because accessory list is too extensive and complex to list. Sometimes options are interdependent or mutually exclusive. Please refer to the datasheet or contact us if you can't find what you're looking for.