Product Overview
AMS Armored Withdrawable Metal-enclosed Switchgear is the latest generation of medium-placed metal-enclosed switchgear developed under the guidance of senior switchgear experts from China and Germany. This product achieves internationally advanced technical level, and its design and manufacturing fully comply with GB, DL, IEC, DIN/VDE standards as well as the standard requirements of major industrialized countries worldwide.

AMS Indoor AC Metal-enclosed Switchgear features a complete and comprehensive specification range.

Rated voltage: 12kVRated current: from 630A to 4000ARated short-circuit breaking current: up to 50kARated peak withstand current: up to 125kA

Normal Service Conditions
Operating temperature range: -25℃ ~ +40℃Maximum daily average ambient temperature: 35℃Maximum installation altitude: no more than 2000m above sea levelSeismic intensity: no more than Grade 8Ambient air environment: free from severe pollution and frequent violent vibration

Complete Technical Parameters
Rated voltage: 12kV
Rated frequency: 50Hz
Rated power frequency withstand voltage (1min): 42kV
Rated lightning impulse withstand voltage (peak value): 75kV
Rated current: 630/1250/1600/2000/2500/3150/4000A*
Rated short-circuit breaking current: 31.5kA
Rated short-time withstand current (4s): 31.5kA
Rated short-circuit making current (peak value): 80kA
Rated peak withstand current (peak value): 80kA
Rated short-circuit breaking operations: 50 times (for rated short-circuit current ≤40kA); 30 times (for rated short-circuit current 50kA)
Mechanical endurance life: 30,000 operations (for rated short-circuit current ≤31.5kA); 20,000 operations (for rated short-circuit current ≥40kA)
Rated voltage of motor for electric chassis truck: DC220/110V, AC220/110V, DC48V