For example: Agilent E4440A or Anritsu 68369
Electronic Loads
Rod-L Electronics 01120-04
Test Load / 120k Ohm Hi-pot / Ground Continuity Test Load

Manufacturer: Rod-L Electronics
Bird Electronics 100-ST
RF Terminator 100 Watt Load, Convection-Cooled Dry - N, TNC, BNC, 7/16 DIN

Manufacturer: Bird Electronics
Bird Electronics 300-WT-FN
300 Watt N-Female Convection, 50 Ohm Termination

Manufacturer: Bird Electronics
NHR 4700-6TP/CBL
6000W, 1200A, 120V Programmable DC Electronic Load/CBL-Comm/Parallel Cable

Manufacturer: NHR
Keysight / Agilent 60503A
DC Electronic Load Module 3-240V/0-10A 250W

Manufacturer: Keysight / Agilent
Transistor Devices DLF400-600-4000
Electronic Load 1.2-400v 0-600a 4kw

Manufacturer: Transistor Devices
Transistor Devices DLP130-50-2500A
Electronic Loads 130V, 50A, 2500W

Manufacturer: Transistor Devices
Transistor Devices DLR400-15-2500A
Electronic Load 3-400v 0-15a 2500 W

Manufacturer: Transistor Devices
Digital Electronics ELS-150
150W / 120V / 30A Single Channel Programmable Electronic Load, VFD Display

Manufacturer: Digital Electronics