Product Type: Capacitor Start, Capacitor RunHP: 1/4, 1-1/2RPM: 1725/3450Volts: 230Amps: 9/3.3Hz: 60Phase: 1Frame: 56JEnclosure Type: ODP (Open Dripproof)Mounting: C-FaceMotor Diameter: 6-1/2"Shaft Diameter: ThreadedRotation: CCW Pump EndNumber of Speeds: 2Service Factor (SF): 1.30Bearings: BallThermal Protection: AutomaticMaximum Ambient Temperature: 40° CInsulation Class: BDuty Cycle: ContinuousCapacitor: 25MFD @ 330VAC (Included)STS1152R is listed in Century's cross reference as a possible substitute for the following: A.O. Smith C48A46A04, A.O. Smith C48L2N125, A.O. Smith C48L2N125A1, A.O. Smith C48L2N130, A.O. Smith C48L2N132, A.O. Smith C56M2N113, A.O. Smith C56M2N113A1, A.O. Smith C56M2N114, A.O. Smith K48M2N117A2, A.O. Smith K48M2N118, A.O. Smith K48M2N118A1, A.O. Smith K48M2N118A2, A.O. Smith K48M2N119A2, A.O. Smith K48M2N121, Century B977, Franklin 17858, GE C502, Hayward SP1610Z2BS4, Hayward SP1610Z2M, Hayward SP1610Z2M1, Hayward SP1610Z2MBK, Packard 91737, Century 177107, Century 177108, Century 190147, Century B940, Century B957, Emerson EB977, Emerson JH15FL2, Franklin 15940, GE C1112, Century 190066Sealed Switch "1081" DesignAll Copper WindingsEnergy Efficient