Which of the following are types of overcurrent protection?

Overcurrent protection is essential in electrical systems to prevent damage caused by excessive current, which can lead to overheating and equipment failure. The correct answer includes circuit breakers, recloser-OCR (Overcurrent Relay), and cutouts, as these devices are specifically designed to detect overcurrent conditions and interrupt the electrical flow to safeguard the system.

Circuit breakers are automatic protective devices that can be reset after tripping due to overcurrent, effectively protecting circuits from overload. Reclosers are more sophisticated devices that can interrupt and automatically restore power after a temporary fault, while OCRs operate as protective relays to monitor current levels continuously and trip the circuit when predetermined thresholds are exceeded. Cutouts serve as a disconnect device used for overhead lines and help isolate parts of the electrical circuit during faults or maintenance.

In contrast, the other options are not suitable for overcurrent protection. Fuses and voltage regulators, found in the first option, fuse devices do provide overcurrent protection, but voltage regulators do not; they are designed to maintain the output voltage regardless of load conditions. The second option's transformers and switches are primarily for voltage transformation and controlling current flow, respectively, rather than protecting against overcurrent. Lastly, conductors and connectors are components used to carry and connect electrical