Auxiliary Contactor Electrical Symbol For Contactor

There are two basic auxiliary contact types.

Auxiliary contactor electrical symbol for contactor. Auxilliary contacts symbols for use in electrical pneumatic and hydraulic schematic diagrams. Hello i have a 5hp 380 volt 3 phase motor that bends reinforcing bars it had 3 contactor s wired to it one energised when power was put on and the other two were for toward and reverse with the overload connected in the bottom its set at 9 amp overload i purchased this motor in auction and all the wires are missing and the contactor s are not working i want to replace all the contactor s. The n c contacts are for example used as electrical interlocks where two contactors are used for forward reverse operation. These are known as normally closed n c and normally open n o contacts.

We buy contactors without auxiliary contacts on them and also buy auxiliaries to be added as needed. Stationary contact and movable contact. Those that are closed in the non activated state or those that are open. In addition the contact letters 9f8 9f9 are mentioned.

A contactor has three components. I am trying to make the schematic wiring diagram w d and bill of ma. Enclosures are made of insulating materials such as bakelite nylon 6 and. Indicator light symbols an indicator light often referred to as a pilot light is a small electric light used to indicate a specific condition of a circuit.

Perhaps the most common industrial use for contactors is the control of electric motors. The no contact of the auxiliary control contactor is terminated at the terminals x2 3 and x2 4 and is used in parallel to the start pushbutton no contact for latching purposes. The same part number contactor can be used with none 1 2 3 or 4 auxiliary contact blocks. The contacts are the current carrying part of the contactor.

There are two types of power contact. The top three contacts switch the respective phases of the incoming 3 phase ac power typically at least 480 volts for motors 1 horsepower or greater. The lowest contact is an auxiliary contact which has a current rating much lower than that of the. Each block has 1 no 1 nc contact.

Available in svg png jpg dxf dwg formats. Available in svg png jpg dxf dwg formats. This is the only component from which the entire load current will flow. The contacts are classified as power contact auxiliary contact and contact spring.

The electromagnet or coil provides the driving force to close the contacts the enclosure is a frame housing the contacts and the electromagnet. Hence it is a very important component of the contactor. An overload relay used with a three phase motor has three such contacts one for each phase.