3 phase motor control wiring diagram

3 Phase Motor control diagram:

This diagram shows how to make 3 phase motor control wiring diagram. In this circuit, we use, an FP MCB ( Four Pole Minature Circuit Breaker ), a magnetic contactor, an overload, a 3-phase motor, a terminal block, a flowmeter, and a water tank. First, we need to connect FP MCB with a power source, then connect the magnetic contactor with MCB, then connect the terminal block and flowmeter, and lastly, connect the motor with the circuit.

Diagram of 3 Phase motor control wiring:

3 phase motor control wiring diagram
Fig 1: 3 phase motor control wiring diagram

Components Need for this Project:

You can get the components from any of the sites below:

  1. FT MCB [See Buy Click Amazon]
  2. Contactor [See Buy Click Amazon]
  3. Overload [See Buy Click Amazon]
  4. Flowmeter [See Buy Click Amazon]
  5. Terminal Block  [See Buy Click Amazon]
  6. Water Tank  [See Buy Click Amazon]
  7. 3 Phase Motor  [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 3 Phase motor wiring:

01. FT MCB

Fig 2: FT MCB

Four pole MCCB for Four wires connections, the one additional Four pole for neutral wire connection so that between neutral and any of the other three will supply. It is used where is the possibility of a high neutral current (due to unbalanced loads and /or Third and multiple Third harmonics current etc) and Neutral / Earth Protection is provided on Neutral. Four Pole Circuit Breakers Have advantages in the case When one of the Poles of the Device will get Damaged, and they also provide Isolation from neutral voltage.

02. Contactor 

Fig 3: 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)

03. Overload 

Fig 4: Overload

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.

04. Flowmeter 

Fig 5: Flowmeter

A flow meter is a flow rate measuring device used to determine the linear or nonlinear mass and volumetric flow of a liquid or water. The many names of flow meters include flow water, flow indicator, liquid meter, and flow rate sensor. which can be an open channel or closed conduit. An open channel is when the flow is open to the atmosphere. whereas a closed conduit is when the flow is in a tube or pipe.

05. Terminal Block

Terminal Block
Fig 6: Terminal Block

A Terminal Block Consists of Modular Housing With An Insulated Body That Secures Two Or More Wires Together. Terminal Blocks—Also Referred to as terminal Connectors, Connection Terminals, or Screw Terminals—are Used in a Wide Array of Applications Where Electrical Systems Need to be Safely Connected. Electrical Terminals are a Class of Electrical Connectors That are Used to Transfer Electrical Current From a Power or Grounding Source to use. Terminals "Terminate" by Crimping or Soldering to Wire or Cable.

06. Water Tank

Water Tank
Fig 7: Water Tank

Overhead Water Tanks are Mostly Used For Water Storage. These Tanks are available in a variety of forms and Sizes, Including Circular Water Tanks with domed tops and Conical bases, Rectangular Water Tanks, conical water tanks with flexible and rigid circular shapes, and more. The above Water Tank Maintains a relatively constant Water Pressure for all Processes. The Water Pressure is Determined by the tank’s distance from the Ground and the feeding Sequence.

07. 3 Phase Motor

3 Phase Motor
Fig 8: 3 Phase Motor

A Three-Phase Motor is an Electric Motor That Typically Receives its Power From a Three-Phase System (three-phase current) This can be realized via a Three-Phase Mains Supply or a Frequency Inverter. Three-Phase Motors are Available as Synchronous and Asynchronous Motors. Three Phase Alternating Current Power Motor is Economical to Supply Power to the data Center Since it Requires Less Conductor Material to Supply Electricity. This Explains Why 3 Phase Alternating Current Motor is Used in Electric Transmission, Generation, and Distribution in Most Countries Worldwide.

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