On delay timer connection diagram:

This diagram shows how to make an On delay timer connection diagram. In this circuit we use TP MCB with the power source, then connect the contactor with TP MCB with the MCB, then connect the timer with the contactor, then connect the DP MCB with the timer, then connect the start button and motor with power source circuit. Now this circuit is ready for use.


Diagram of On delay timer connection:

On delay timer connection diagram

Components needed For this Project:

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

  1. DP MCB 16A [See Buy Click Amazon]
  2. TP MCB 20A [See Buy Click Amazon]
  3. Magnetic Contactor 40A [See Buy Click Amazon]
  4. 8 Pin Timer 220V AC [See Buy Click Amazon]
  5. Push Button NO Switch [See Buy Click Amazon]
  6. 3 Phase Motor (5 HP) [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 On delay timer connection diagram:

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. TP MCB:

The full meaning of MCB is Miniature Circuit Breaker for TP MCB. MCB is an electromagnetic switch or device. If for any reason a short circuit occurs in the supply line or load line (line to line or line to neutral) or in case of overload MCB. the MCB automatically trips and disconnects the main line circuit or household power supply Connection. TP MCB In 3 Pole MCB, Switching & Protection is affected in only 3-Phases and the Neutral is not part of the MCB. 3 pole MCB signifies the Connection of Three Wires for a 3-Phase system Red-Yellow-Blue Phase. 3-Phase Supply Only Without Neutral.

03. 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.

04. Timer:

A timer is a type of time-switching device that controls and controls Electrical circuits and electrical and electronic devices through time setting (on/off). The timer is basically 8-pin. Like other controlling devices the timer has a coil and when this coil is magnetized, the timer works on/off. The timer has 2 common ends and each common end has normally close and normally open options. When the timer is set by time, the timer trips at the end of that time and turns the common is normally closed (on) to open (off) and normally open (off) to close (on). This is how the timer works.

05. Start Button:

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.

06. 3-Phase Motor:

A 3-phase electric motor uses a 3-phase Power Supply to Convert Electric Energy into Mechanical Energy. It contains four Wires (Three hot Wires and one Neutral Wire) and Uses 3 Alternating Currents of the Same Frequency. Since it Generates a Rotating Magnetic Field, it does not need a Capacitor for the Startup. Some 3-phase Motors are Reversible, Which Means they can serve as Generators by Turning Mechanical Energy into Electrical Energy.

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Frequently asked questions

What are the applications of on delay timer?

Also referred to as delay-on-operate timers, they are often used for blower motors to delay the operation for a specific time period after a gas, electric, and oil heater has been turned on. On-delay timers are also used to stagger starting times for multiple compressors and motors that are activated by the main switch.

What are the two types of on-delay timers?

The timing contacts for the on-delay timer could be either normally open, timed to close (NOTC), or normally closed, timed to open (NCTO). On-delay timers delay their action when the coil is energized and revert to their original state instantly de-energized.

What is the operation of PLC on a delay timer?

The function of a Retentive ON Delay Timer in a Siemens of the PLC is to monitor the occurrence of a certain event (input), add a time delay to it, trigger an action (output), or keep the output ON even if the input turns OFF (aha – the output is “retentive”). The output is only reset by triggering the reset input.

What are the advantages of on delay timer?

The output contacts remain closed until the input coil is de-energized and the preset time elapses, whichever comes first. The advantage of an on-delay timer is that it can prevent unwanted and premature actions by creating a time gap between the input and output signals.

What is the working principle of a timer?

A Timer is a control device that outputs the signal at a preset time after input of the signal is received. The pointers on the Timer do not move along with time of like the hands of a clock do.

Read more Single Phase Wiring


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