Start Button and Stop Button Wiring:

This diagram shows how to make Start Button and Stop Button Wiring. In this circuit, we use a DP MCB ( Double Pole Minature Circuit Breaker ), an indicator light, a magnetic contactor, an overload relay, two start buttons, and two stop buttons. First, we need to connect the DP MCB with the power source, then connect the indicator lamp, then connect the contactor and overload with the power source, then connect the start and stop with the contractor.


Diagram of Start Button and Stop Button Wiring:

Start Button and Stop Button Wiring

Components needed For this Project:

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

  1. DP MCB 20A [See Buy Click Amazon]
  2. Magnetic Contactor 40A [See Buy Click Amazon]
  3. Indicator Light 220v AC [See Buy Click Amazon]
  4. Magnetic Contactor 40A [See Buy Click Amazon]
  5. Motor Protector Overload [See Buy Click Amazon]
  6. Push Button NO Switch [See Buy Click Amazon]
  7. Push Button 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 Start Button and Stop Button Wiring:

01. DP MCB:

DP MCB In 2 Pole MCB, switching & protection is affected in phases and the neutral. A Double Pole or DP Switch is a Switch that Controls 2 Circuits at the same time. In terms of Residential Switching, this Normally means it Switches the live and Neutral at the same time. In Layperson Terms, Double Pole switches or DP Switches are Exclusively Designed to Control 2 Different Electrical Circuits at the same time, which allows the Appliances to Isolate safely and reliably. Fan or light Combinations and Medical Equipment are some of the many applications for DP Electrical Switches and Electrical components.

02. Magnetic Contactor:

A magnetic contactor is an electromagnetic switching device. It is generally used for controlling 3-phase Motors. The operation of a magnetic contactor is similar to that of a Relay. but a relay is used for low-power or low-voltage connections, and a magnetic contactor is used for high-power or high-voltage connections. As soon as the supply is applied to the magnetic contactor coil. its normally open contacts are closed and normally closed contacts are opened and the associated devices are also operated. This is how a magnetic contactor works.

03. Indicator Light:

An indicator lamp just Sounds Technical, Sometimes it is called a Supervisory light Indicator. Indicator lights are amber in color and can be located at the Front, the Rear, and Sometimes at the Side of the car on both the left And Right-hand sides. The Common colors used by Indicator lamps are red, yellow, blue, white, and green line system. A Panel Indicator Lamp Generally has up to 5 Differently Colored Segments to Indicate Various Conditions on the Machine or Process system.

04. Overload:

An overload relay is a safety device that protects your circuit diagram against damage caused by high-power loads. The relay opens if the load exceeds a certain amount. protecting the circuit from destruction. The simplest version of an overload relay is a single-pole, single-throw (SPST) switch. An overload relay is also referred to as a relay switch. switch is a device that opens the circuit in the event of an electrical, thermal, or power overload system. When mounted with a contactor they create a motor starter connection.

07. Stop Switch:

An NC (Normally Closed) Push Button is a Push Button That, In Its Default State, Makes Electrical Contact With The Circuit. An NC (Normally Closed) Push Button is a Push Button that, in its Default State, Makes electrical Contact With the Circuit. When The Button Is Pressed Down, The Switch no Longer Makes Electrical Contact And The Circuit is Now Open. When The Button is Not Pressed, Electricity Can Flow, But When it is Pressed The Circuit is Broken. This type Of Switch is Also known As a Normally Closed (NC) Switch.

06. Start Switch:

NO (Normally Open) Terms Refer to a Type of Dry Contact or Wet Contact. A Push to Make Switch Allows Electricity to flow Between its 2 contacts when held in. When the button is released, the Circuit is broken. This type of Switch is also known as A Normally Open (NO) Switching system. As its name implies, a Normally Open (NO) Switch Contact or “a Contact” is a Switch. Put very simply, a Normally Open Sensor will have no Current When in a Normal State But When it Enters an Alarm State it will have +5V applied to the Circuit.

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Frequently asked questions

What is a 3-wire control circuit?

3‐wire control has three wires leading from the control device to a starter to complete the circuit diagram. Auxiliary contacts are added to starters to give memory to the 3‐wire control circuits diagram that uses pushbuttons.

How does a start-stop circuit work?

In a start-stop circuit diagram, a motor is connected to a power supply through a control device, such as a push button and a switch. Upon pressing the start button, the circuit diagram becomes complete, enabling the current flow to pass through and reach the motor. This initiates the motor's rotation and starts it is operation.

Why a stop button is wired normally closed?

It is always normally closed, meaning that the circuit is already connected so that the power supply can flow freely from the source to the piece of equipment, or load, that needs it. It is only when you push the emergency stop button that it breaks the loop and cuts off the electrical current from reaching the equipment.

What is a basic wiring diagram?

A wiring diagram is the simple visual representation of the physical connections and physical layout of an electrical system or circuit diagram. It shows how the electrical wires were interconnected and could also show where fixtures and components may be connected to the system.

What are the 3 types of wiring?

The 3 types of wires used in household circuits are Earth wire, Live wire, and Neutral wire. Out of these Earth wire was used as a safety measure, especially for those appliances that have a metallic body. The color of the insulation used for this wire was Green.

Read more Single Phase Wiring


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