The PSM-50 is a discontinued servo power supply unit from ELECTROCRAFT's BRU-500 series, featuring 120/240 VAC input (3-phase, 50/60 Hz) with 125-375 VDC output capacity. It delivers 50 AMP continuous and 150 AMP peak current. Compatible models include 615055-2T and 1398-PSM-50 (9101-3000).