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3721A 400W Programmable DC Electronic Load

3721A 400W Programmable DC Electronic Load

Our Price: $961.00
Power Cable


The Array Electronic 3721A programmable electronic load is an affordable single input programmable DC electronic load with a dissipation capacity up to 400W.

  • Rated at 0-40A and 0-80V DC.
  • Maximum Power dissipation 400W at 40° C
  • 4 basic functions: CC, CV, CR, and CP ; and 8 basic test modes: CCL, CCH, CV, CRL, CRM, CRH, CPV, CPC
  • High-speed sequence, high-speed transient, short-circuit, battery discharge and other auxiliary functions
  • Minimum operating voltage is less than 0.6V at the load's full rated current
  • Programmable current slew rate
  • Excellent protection assures high reliability in the most complicated of test environments
  • Multiple groups of parameters and lists can be saved and recalled
  • Ruggedised structure, user-friendly design and convenient operation
  • Supports SCPI (Standard Commands for Programmable Instrumentation) and LabVIEW, and provides necessary PC software
  • Units can be connected in parallel to increase capacity. Each unit must be set to constant current mode
  • RS-232C Interface
  • Includes an USB to RS-232C interface cable.
SKU 3721A
Warranty 12 Months
Manufacturer Array Electronic Co Ltd
Weight 6.00 Kg
In stock 3 in stock
Lead Time (if not in stock) 10 working days


The 3721A electronic load is suitable for:

  • Power supply testing and calibration
  • Load driver testing
  • Automatic test equipment
  • Battery discharge testing
  • Fuel cell testing
  • Generator testing

Calibration Certificates

All units are tested before leaving the factory and a Test certificate is included with each instrument. If you require a unit that has been tested within the last month with a valid Calibration Certificate this can be arranged for an additional fee.

Using the Array 3721A Electronic Load to Test Battery Discharge Rate

It can be quite difficult to determine the state of rechargeable batteries. This video made by Circuit Specialists explains clearly how to measure the capacity of a battery by discharging a full charged battery through the electronic load using the load's battery discharge test mode. The 3721A displays the battery capacity at the end of the discharge test
  • Array 3721A Electronic Load (1)
  • Power Cable (1)
  • Printed User Manual (1)
  • CDROM with configuration Software (1)
  • Removable Handles (2)
  • USB to RS-232C Interface cable (1)
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