Electrical Components in Circuits: Functions, Differences, and Occupational Safety and Health Importance Electrical circuits utilize various components like contactors, protection relays, fuses, switches, and sensors to ensure operational safety, prevent electrical hazards, and comply with occupational health and safety standards. Each of these components plays a unique role in maintaining the integrity and functionality of electrical systems. 1. What is a Contactor? A contactor is an electrical switching device designed to control high electrical currents. It primarily operates based on an electromagnet, enabling safe opening and closing of circuits with high power demands. Features and Types: AC or DC Coil Contactors: Chosen based on the circuit type. AC coil contactors are generally quieter. Main Contacts: Typically three in three-phase contactors, made of copper or silver-coated materials for conductivity and durability. Auxiliary Contacts: Provide additional signals for c...