Electrical Contactor and Overload DOL starter:
This diagram shows how to connect Contactor and Overload Dol starter Direct On Line starter. Through which three phase motor controlling is done very safely. Motor controlling upto 5 Hp can be done using Doll starter. This diagram is for Contactor and Overload Dol starter wiring So you can wire your house or office like this diagram very easily. If you want to learn how to connect this circuit clearly you can follow our youtube video link below.
Diagram of Electrical Contactor and Overload DOL starter:
Components Need for this Project:
You can get the components from any of the sites below:
- Magnetic Contactor [See Buy Click Amazon]
- Overload Relay [See Buy Click Amazon]
- No Switch [See Buy Click Amazon]
- NC Switch [See Buy Click Amazon]
*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!
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Components used to make the Contactor and Overload DOL starter:
01. Magnetic Contactor
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| Fig 2:Â Magnetic Contactor |
A magnetic contactor is an electrical device used for load control, automation, and protection. It is much like a magnetic reel. However, relays are generally used for low power and voltage, on the other hand, when we think of high power, these heavy-duty contractors only come to mind. It basically works by switching the load on and off. It has 3 terminals whose inputs are denoted as L1, L2, L3, and outputs as T1, T2, and T3. The circuit of the load is made in automation mode or protection using auxiliary contacts. It has two types of terminals. 1) Normally Open (NO). 2) Normally Closed (NC).
02. Overload Switch
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| Fig 3:Â Overload Switch |
Overload relays are often used to protect the motor from excessive current flow. Overload relays are used to protect the motor from overheating. Besides some specific faults such as phase to phase, phase to ground, etc. overload relay provides protection to the motor. A thermal overload relay works on the principle of bimetallic strip electro-thermal characteristics. When the bimetallic heats up, the trip function in the overload relay turns on and disconnects the power supply to the contactor coil, thus tripping the overload relay and breaking the motor current and saving the motor.
03. NO Switch
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| Fig 3:Â NO Switch |
The operator switch has its contact in Normally Open condition. To make Ladder Logic you need to understand NO contact. A Classic Switch has one Input And one Output. In "No Switch," YoungBoy Raps About Ammunition, Murder, Firearms, and Firearm Attachments Such as a Switch. The contact of the switch whose contact is already open is NO. That is enough to understand. no switch in a circuit, then the circuit will not function as intended. to write a program such that when the red light is on, This switch is now in normally open condition. When you push the switch it will close and the red light will turn on.
04. NC Switch
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| Fig 5:Â NC Switch |
Indicates the contacts of switches or automatic actionable devices. Simply put, the push switches, magnetic contactors, and relays that we use in the factory Normally have Close Contact exists. At this moment the switch will be in normally closed condition. Because already he is sitting close. When turned off the contact will open. To make ladder logic you need to understand NC contact. As already explained. The switch contact is already closed in NC. That is enough to understand.
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