Get current pricing for Inverter, INVERTER-21937-ID Inverter Duty Motor. Rpm Range: 146 @ 15 Hz - 1786 @ 60 Hz. Model 685881. 460 Volt, 3 Phase, 60 Hz. Dp Enclosure. 169 Amps. Service Factor 1.0. With M . Product Category: Process Equipment, Sub Category: Power Generation: