Superior Electric SLO-SYN 2000 S stepper motor power supply, model PS20-230. Features DC Bus, Regen, Overload, and Blown Fuse status indicator LEDs on the front panel. Includes External Regen Resistor Option. Two connector ports labeled C1 and C2 are present on the front face.

Rear label shows: Input 230 VAC, 20 Amps/Phase, 3 Phase; Output 310 VDC, 20 ADC. Serial No. 01F-435. UL Listed, CE marked.

Sold as-is, untested. See all photos for condition details including visible wear and wiring.