Specifications Series PSR Voltage 208-600VAC Frequency (f) 50/60 Hz Amperage 37 Amps Ambient Temperature –25°C to 60°C Documents Softstarter Brochure (PSTX, PSE, PSR, PSRC Series) Softstarter Main Catalog Related Products Quick view PSR37-600-11 $568.69 MSRP: Soft Starter (37 Amps) Quick view PSR72-600-70 $1,025.86 MSRP: Soft Starter (72 Amps) Quick view PSRC6-600-70 $264.27 MSRP: Soft Starter (6.8 Amps) Quick view PSR6-600-70 $250.90 MSRP: Soft Starter (6.8 Amps) Quick view PSR9-600-70 $295.49 MSRP: Soft Starter (9 Amps)