International Journal of Applied Power Engineering (IJAPE) Vol. 14, No. 2, June 2025, pp. 441~448 ISSN: 2252-8792, DOI: 10.11591/ijape.v14.i2.pp441-448  441 Journal homepage: http://ijape.iaescore.com Hardware implementation of safety smart password based GSM module controlling circuit breaker Rakesh G. Shriwastava 1 , Pawan C. Tapre 2 , Rajendra M. Rewatkar 3 , Swapna M. Choudhary 4 , Ramesh K. Rathod 5 , Sham H. Mankar 6 , Hemant R. Bhagat Patil 6 , Salim A. Chavan 7 1 Department of Electrical Engineering, Govindrao Wanjari College of Engineering and Technology, Nagpur, India 2 Department of Electrical Engineering, S.N.D. College of Engineering and Research Center, Yeola, India 3 Biomedical Engineering Department, Faculty of Engineering and Technology, Datta Meghe Institute of Higher Education and Research, Wardha, India 4 Department of Electronics and Telecommunications Engineering, G. H. Raisoni College of Engineering, Nagpur, India 5 Department of Mechanical Engineering, PCET’s Pimpri Chinchwad College of Engineering and Research, Pune, India 6 Department of Mechanical Engineering, Govindrao Wanjari College of Engineering and Technology, Nagpur, India 7 Department of Electronics and Telecommunication Engineering, Govindrao Wanjari College of Engineering and Technology, Nagpur, India Article Info ABSTRACT Article history: Received Jul 24, 2024 Revised Dec 13, 2024 Accepted Jan 19, 2025 This research work highlights the hardware implementation of safety smart password-based GSM module controlling circuit breaker. Safety is the major concern in daily life for domestic activities. In current scenario, accidental death of a lineman are the major issues and to protect operators for the same. To control circuit breakers, passwords security is essential for lineman. Due to that electrical accident’s ratio is increased day to day life at the time of repairing the lines. It is also done due to lack of communication and coordination between maintenance and substation. For safety of lineman, on and off line turning operation is proposed. Secure password is for breaker operation and maintenance. In the proposed system, password is sent to the line operator's mobile phone and GSM module by automatic voltage regulator (AVR) microcontroller. Entered password and password received by the GSM receiver is match so circuit breaker will be smoothly operated. If password is incorrect, message will appear on the LCD display for security purposed and message sent to control room regarding unauthorized access to the system. Keywords: ATmega328p microcontroller Circuit breaker controlling GSM Lineman safety Password security This is an open access article under the CC BY-SA license. Corresponding Author: Rakesh G. Shriwastava Department of Electrical Engineering, Govindrao Wanjari College of Engineering and Technology Nagpur, India Email: rakesh_shriwastava@rediffmail.com 1. INTRODUCTION In proposed system, electrical circuit’s circuit breakers is projected from damage due to overloads or short circuits. To detect faults and block current flow is the major objective of circuit breaker [1]-[4]. The circuit breakers can be reset manually or automatically by replacing fuses. The ratio of electrical accidents of linemen are more in manual operation due to lack of communication and coordination between maintenance and substation [5]-[8]. The circuit breakers are designed using a secure password to avoid such incidents [9]-[15]. The design of 8-bit microcontroller from the ATmega328P family can be and fully controlled the operation of password circuit breakers. The password can change any time during operation and stored in microcontroller which is stored inside the microcontroller under electrically erasable programmable read- only memory (EEPROM) [16]-[20]. The password entering for circuit breaker operation, keypad is used.