전기 기술자가 가르치는 소형 차단기 안전

A professional electrical engineer standing beside an open electrical distribution board, explaining MCB (Miniature Circuit Breaker) functions and safety features. The engineer is wearing a safety helmet, safety gloves, and a blue work uniform. Various MCBs are clearly visible inside the panel with labels. The engineer is pointing at the MCB and teaching about electrical protection, overload protection, and short-circuit safety. Realistic industrial environment, high detail, professional lighting, educational training scene, ultra-realistic, 4K quality