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NH40S Changeover Switch

1.1 Application Mainly used in the distributing and motor circuit which has high short-circuit current,and acted as main switch or master switch infrequently operated by hand, it is particularly suitable in the relative high class with drawable low voltage complete equipment. They provide safety isolation and protection against overcurrent for any low voltage electrical circuit. 1.2 Standard: IEC/EN 60947-3. 1.3 General characteristic Full-enclosed structure Unique rolling insert type contact system.

NH40SZ Automatic Changeover Switch

NH40SZ automatic changeover switch disconnectorintegrates electrical and mechanical interlocking systemsto guarantee safe transfer operation. It is applicable for the three-phase four-wire power supply system of AC 50Hz, rated voltage AC 380V ,rated current up to 3150A. It can realize automatic and manual changeover between normal and back up power supply power,and stop power supplying to load when changeover process of power supply is carried out. The switch is applicable for two circuits power supply and in the condition which requires high quality power supply. Standard: IEC 60947-6-1