Password Based Circuit Breaker

Model: 32

Solderable DIY project kit for Engineering & Diploma students Worldwide

Do-It-Yourself Kit :

Includes complete hardware comprising of discrete components, modules, PCB, controller etc. and tested program code for building the project. Extensive documentation for project execution including step-by-step instructions for Circuit building, Assembly procedure and Troubleshooting. (Tool kit-Multimeter, Soldering iron and program burner not included in the kit)

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The main objective of this project is to develop a circuit breaker system, to protect the line-men who are predisposed to fatal electrical accidents, that turns ON/OFF the loads with the help of a password.

Due to lack of proper communication between the maintenance staff and the electric substation staff, fatal electrical accident occurs sometimes for the line men during repairing of electrical lines. This project is enhanced to provide solutions to the maintenance staff by arranging a password system to operate the loads.

The proposed system uses a microcontroller of the 8051 family and a rectified power supply. A matrix keypad is interfaced to the microcontroller for entering a password. A relay is controlled by a relay driver IC, which is connected to the microcontroller. The lamps areconnected to the relay contact to indicate electrical lines.

The numbers entered through the matrix keypad are sent to the microcontroller. The entered password is compared with the stored password in the microcontroller. If the entered password matcheswith the stored password,then only the line will be turned ON/OFF.Activation / deactivation of the circuit breaker are indicated by a lamp (ON/OFF).

This project future can be enhanced by using an EEPROM for user to change the password for a more secured system.


All-inclusive solution kit.

Extensive audio-visuals available.

Branding-free material.


Easy to use, Self-explanatory kit..

Call/mail for Tech Support from 10 am – 7 pm.

Can be Customized for Arduino, Raspberry Pi, PIC


Hardware Requirements

  • 8051 series Microcontroller
  • Voltage Regulator
  • Resistors
  • Capacitors
  • Crystal
  • Transistors
  • Diodes
  • Relay Driver IC
  • Relays
  • Matrix Keypad
  • LED
  • Transformer
  • Lamp

Software Requirements

  • Keil compiler
  • Language: Embedded C or Assembly

Q & A

Buyer Feedback

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  1. Rated 4 out of 5

    Sudeep upadhyay

    I got to know about edgefx through google. I was searching my project title in google that Password Based Circuit Breaker in google then i got to know about edgefx. I have decided to purchase project from edgefx because i found my project title in edgefx that why i have purchased project from edgefx. kit was delivered in time with right components. Customer support helped me in purchasing the project. Provide more and more advanced projects. I want to give reference to my friends.

  2. Rated 5 out of 5

    Mahesh Vangaveeti

    Many of my friends,staff suggests me to buy project at edgefx.And i am looking for password breaking projects. I like the sample documentations,abstract,youtube video etc. purchase it through online. satisfied with edgefx for your great service

  3. Rated 5 out of 5

    Saurabh singh

    I came to know about Edgefx through my senior. I directly typed Edgefx kits in Google.I decided to buy a kit from Edgefx by the words of my senior. And I like the complete kit.Yes the kit delivered on time with the right components.No Improvements required.

  4. Rated 4 out of 5

    Parmar Hitendrasinh Gulabsinh

    I came to know about Edgefx when I am searching for the components of my project.I decided to buy a kit because I was short on time and Edgefx providing the fully assembled kit.The kit got delivered on time with all the right components.No Suggestions.

  5. Rated 4 out of 5

    Saurabh singh

    I come to know about Edgefx through Internet and I used project title as a keyword to find Edgefx. I decided to buy because COD facility.I like the whole package. The kit delayed for a day.I directly purchased through online. No Improvements.