
3 phase motor contactor. In choosing the correct contactor you will need to consider the load type that the contactor will be used with. In 3 power system we use some devices between induction motor and supply which are a cb circuit breaker mc magnetic cont actor or motor stater ol overload relay and nc no push button switches for onoff and reset. Contactor wiring with complete explanation. These devices are used when the voltage requirements of the load exceed the power handling capability of a mechanical relay.
I had to do this a few times with floodlights to be used outside. Pole count for more informationto explain the difference in the number of poles we need to first review how ac power works. 3 phase motor contactor wiring diagram. On abb contactor wiring diagram.
A contactor is a large relay usually used to switch current to an electric motor or another high power load. Special consideration for the 3 phase squirrel cage inductive motor load which is one of the most common load types in the industry where the motor draws a significant amount of current inrush current when starting. Contactors are typically used on three phase air conditioning motors requiring at least 480 volts to operate. We also offer a variety of nema contactors with marine certification for many marine and off shore applications.
Starting a three phase motor. Shown here is a contactor for a three phase electric motor installed on a panel as part of an electrical control system at a municipal water treatment plant. Three phase electric motor contactor. Friends ye video bahut important video hai because is video me ham practically janne wale hai ki ak contactor ke connection kaise kiye jaate hai to aap is video ko poora jarur dekhiyega taki apke.
Every 3 phase contactor has 3 poles one for each phase while every single phase contactor has either 1 or 2 poles please see switch terminology. A three phase contactor is an electronic device used to turn power on or off at a three phase load. Magnetic motor starter for electric motor control 5hp 18amp 3 phase 208 240vac with adjustable overload relay 12 to 18 amps 33 out of 5 stars 3 6690 66.