The Eaton B27CGF40B040 is a definite purpose magnetic motor starter typically used on air compressors with a 7.5HP motor running on 230v single phase power. B27CGF40B040 uses a single phase 45amp contactor with an adjustable overload between 40-57amps.
Manufactured by Eaton / Cutler Hammer. The B27CGF40B040 is specifically used on 7.5hp air compressors that are running on 230/1/60hz power. The overload is adjustable between 40-57amps.
Featuring components that meet UL horsepower ratings and design standards, Eaton mag starters are UL Recognized and use CSA Certified contactors. No internal starter heaters are required. Eaton single phase magnetic starters are shrouded or use finger proof terminals to reduce the possibility of electric shock.
Single phase motor starters provide overload protection to electric compressor motors. This is similar to a surge protector for your compressor – a motor starter adsorbs the incoming power before it is sent into your electric motor. This helps to prevent costly damage to the windings from over-currents and temperature increases. A magnetic starter is required for all three phase compressors and any single phase application where there is no overload protection for the motor. Eaton B27 starters are pre-wired from the factory.
It is Best to Select Your Starter Based on the Full Load Current Rating As Shown on the Motor Name Plate - please contact us to verify what starter is best based on your motor and application.