Lighting Lighting Phổ quát 4 1 0 0 Light sources and lighting products that provide illumination, indication or signalling.
Oil circuit breakers High-voltage electric switch Oil circuit breakers 5 0 0 0 0 0 3 Oil Circuit Breaker a high-voltage AC electrical switch whose main contacts are located in a space filled with mineral (transformer) oil. Upon interruption of the electric circuit, an electric arc forms between the conta…Nhiều hơn
