1：The cabinet structure adopts the assembled type, and the circuit breaker adopts the handcart floor type structure; 2： The new composite insulation vacuum circuit breaker is adopted, which has the characteristics of simple replacement and good compatibility; 3：the screw nut feeding mechanism installed in the handcart frame, The handcart can be easily moved to prevent misoperation and its structural damage; 4：All operations can be carried out with the cabinet door closed; 5: the main switch, handcart, and switch cabinet door interlock adopt forced mechanical locking, which conforms to the "five-proof" function ; 6：Sufficient space in the cable room to connect multiple cables; 7:Quick grounding switch for grounding and closing short-circuit circuits; 8:External enclosure protection grade IP3X, handcart door open state, protection grade IP2X; 9：The product conforms to GB3906-2006, DL/ T 404-2007 and refer to the international standard IEC298.
1. Ambient air temperature: -5~+40 and the average temperature should not exceed +35 in 24h. 2. Install and use indoors. Altitude above sea level for operation site should not exceed 2000M. 3. Relative humidity should not exceed 50% at max temperature +40. Higher relative humidity is allowed at lower temperature. Ex. 90% at +20. But in view of the temperature change, it is possible that moderate dews will produce casually. 4. Installation gradient not exceed 5. 5. Install in the places without fierce vibration and shock and the sites insufficient to erode the electrical components. 6. Any specific requirement, consult with manufactory.
Vacuum circuit breaker technical parameters 
Spring-operated mechanical technical parameters 
Vacuum switch cabinet technical parameters 