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Ultra Fast Acting Electronic Circuit Breaker
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The project is designed to shut down the power supply when it is overloaded. Conventional circuit breaker like MCB based is on thermal bimetal lever trip mechanism. It is very slow and the trip time is dependent upon the percentage of overload.

This project senses the current passing through a series element and the corresponding voltage drop is compared against the preset voltage proportional to the current by a level comparator to generate an output for the load to trip.

The concept of electronic circuit breaker came into focus realizing that conventional circuit breakers such as MCBs take longer time to trip. Therefore, for sensitive loads it is very important to activate the tripping mechanism at the shortest possible time, preferably instantaneously.

This project is demonstrates fast tripping mechanism as against the slow one like MCB. Electronic circuit breaker is based on the voltage drop across a series element proportional to the load current, typically a low value resistor.

This voltage is sensed and rectified to DC which is and then compared with a preset voltage by a level comparator to generate an output that drives a relay through a MOSFET to trip the load. The unit is extremely fast and overcomes the drawback of the thermal type. It uses a microcontroller from 8051 family.

Further the project can be enhanced by using a CT for galvanic isolation between mains and control circuit. Power electronic devices such as thyristors / IGBTs can be used for ultra fast operation compared to all the methods.

Current Sensing.
Extensive audio-visuals available.
Branding-free material.
Call/mail for Tech Support from 10 am - 7 pm.
Pre-programmed Microcontroller.
All-inclusive solution kit.
Easy to use, Self-explanatory kit.
Hardware Requirements
  • 8051 series Microcontroller
  • Op-amp
  • Transformer
  • Diodes
  • Capacitors
  • Resistors
  • LED
  • Crystal
  • LCD
  • Voltage Regulator
  • Relay
  • Lamps
Software Requirements
  • Keil compiler
  • Languages: Embedded C or Assembly
Q & A
Q:  What is the difference between Electronic circuit breaker and normal circuit breaker?
A:  Normal circuit breaker is dependent on thermal bimetal lever trip mechanism, whereas Electronic circuit breaker is formed using current sensing element and comparators
Q:  What is the role of microcontroller in this project?
A:  The microcontroller is programmed to display the circuit breaker conditions.
Q:  Will it auto return after fault (overload) clearance?
A:  No, one has to restart the device, as it would toggle between on and off till overload condition is cleared.
Q:  Which microcontroller is used in this project?
A:  A 40 pin microcontroller from 8051 family is used in this project.
Average Rating
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Showing 4 of 15 reviews Show All
Archana, kasaragod on 16th December, 2014, 02:13 PM

iam not satisfied beacause here i cant see the details of the project....plss include the circuit diagram and program details....

Sagar Bhatt, Rajkot on 18th November, 2014, 02:20 PM

I found your website on internet; I searched with the project title so that I came to know about your website.I like the complete project kit and also assembling procedure.I got the kit on time with right components. Edgefx team was great.

Shailesh sharma, Nagpur on 20th October, 2014, 12:14 PM

To know the awareness of real-time appliances I decided to buy a kit. Material is very nice because it is very supportive.

Praveen Kumar, Lucknow on 20th October, 2014, 12:09 PM

I decided to buy a kit from Edgefx because my team decided to take the kit from this organization.I like the Report in my kit.

Rating Breakdown (15 Reviews)

Edgefx Technologies Pvt. Ltd.
105, Liberty Plaza, Himayatnagar
Hyderabad, Telangana, India - 500029
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