GW Instek PEL-2000 Series Programmable DC Electronic Loads and Mainframes - GW Instek PEL-2004A, The PEL-2004A is a 4-slot mainframe with a master control unit to hold 4 load modules. The PEL-2000 Series includes two types of mainframes and 4 types of load modules to accommodate users 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. When the PEL-2004 is configured with 4 load modules rated at 350W each, the PEL-2000 series is able to sink up to 1.4kVA of power. GW Instek PEL-2004A DC Electronic Load Mainframe