Specifications: Horsepower (HP): 5 Hp AC Frequency Rating: 60 Hz Frame Size: 143/5T Base RPM: 3450 Volt: 208-230V INPUT: 4.6kW Service Factor: 1.15 Full Load Amps: 22-21 Shaft Diameter: 7/8 inch Shaft Length: 2.25in Shaft Type: Keyed ENC: IP23 FR: 143T AC Phase: Single Phase Reversible/Non-Reversible: Non-Reversible ROT: CCW Overload: Yes / Manual reset button Additional Product information: Rigid Base - CL B Insulation 40 C / 104 F Ambient Temp Package includes: 1*Air Compressor Motor Attention: Not all 5 hp motors are exactly the same. So, with the new motor you're purchasing, it's vitally important that you match up the specs on your old motor. All of the information you need to know can be found right on your electric motors nameplate/sticker, which usually can be found on the side of the motor. Note: 1: Amperage This is your electric motors TRUE power rating. HP ratings have been made suspect over the years by large retailers who like to use "peak HP" or " SPL " in their terminology. The Motor's amp rating does not lie. Please make sure your FL amp (FULL LOAD) rating on the motor you're replacing is within 10% of the FL Amp rating of the motor you intend to buy. Example : If your current motor says 21 FL amps at 230VAC. Then you would be safe replacing your motor with a 19FL amp thru 23 FL amp electric motor 230volt. 2: Frame Size The frame not only constitutes the bolt pattern, it also depicts the overall size and torque. The larger the frame, the stronger the motor. If your current motor you're replacing shows 56, 143T or 145T on the nameplate. Its extremely important that you replace it with that frame size. Improperly sized motors will inevitably result