GW Instek PEL-2000 Series Programmable DC Electronic Loads and Mainframes - GW Instek PEL-2040A, The PEL-2040A is a single channel 350W DC Electronic Load module with a voltage range of 1-80V and 70A current rating, for use with either the PEL-2004 or the PEL-2002 mainframe. The PEL-2000 Series includes two types of mainframes and 4 types of load modules to accommodate user requirements in a flexible manner. Any load module combination can be used with a mainframe to tailor a test system based on the number of channels, and the maximum load power, voltage and current of each channel. Multiple loads can be connected in parallel to provide a higher-power load to test higher power supply outputs. This flexibility significantly reduces the investment needed for future projects that have different power requirements. The PEL-2004 is a 4-slot mainframe with a master control unit to hold 4 load modules, while PEL-2002 is a 2-slot mainframe with master control unit to hold 2 load mo