This product isapplicable to the terminal circuitofsingle-phase three-wire or three-phase five-wire with anAC fiequency of 50Hz,a rated working voltageof220Vor380V,and a rated current notexceeding225A.It is used to control and distributepowerto electrical equipment andmeasureelectricity.It provides protection foroverload,shortcircuit,leakage,andundervoltage ofthe line It can beequipped withvariousmolded casecircuit breakers,miniature circuit breakers,miniaturedisconnectors,miniature leakage protectors,modular contactors,buttons,indicatorlights,and special modulartimer switches,surge protectors,etc Itcanbe widelyusedinmodem hotels,commercial and industialenterprises,andresidentialbuildings. The product complies withIEC6039.3-2001M"Low-voltage switchgear andcontrolgear assemblies"and GB7251.3-2006 "Low-voltage switchgear andcontrolgear assemblies"