Sorensen 40V 40A DC power supply, model DCR40-40B2 / M61. Used. Input power: 115VAC 26.8A 50/60Hz. These are heavy: 105 lbs! The front panel includes controls for coarse and fine adjustment of both output voltage and current limit. If you require control of the over-voltage protection (OVP) mechanism (a separate feature), please contact the manufacturer for information on how to adjust these units - the front panel OVP control is not included in this model. To view the full product manual for the DCR40-40B 2 unit (PDF ~3.5MB), click here. Please note that Sorensen is now part of the Elgar/Xantrex/Ametek brand.