Overcurrent and undervoltage are distinct conditions that require separate detection methods. A sensing circuit can monitor voltage levels and trigger alarms or relays when undervoltage occurs, while another circuit does the same for overcurrent situations. Microprocessor-based relays are available that can combine multiple protection functions, including both overcurrent and undervoltage detection, into a single unit. For lower current ratings, using a Motor Protection Circuit Breaker (MPCB) is recommended for motor protection. Understanding these distinctions and available solutions is crucial for effective circuit protection.
