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Air-12/T630-25 Environmentally-friendly Gas-insulated Metal-enclosed Switchgear
Model and Definitions

Normal Use Environmental Conditions
◇ Maximum Temperature: +40℃
◇ Minimum Temperature: -25℃
◇ 24-Hour Average Temperature:≤35℃
◇ Maximum Average Relative Humidity: 24-Hour Average≤95%, Monthly Average: ≤90%
◇ Altitude: ≤1500 meters (for standard type, under standard gas pressure); special instructions required for >1500 meters
◇ For special operating conditions beyond normal use environment, prior consultation with our company is recommended.
Major Technical Parameters
Units | Items | C Module | F Module | V Module | |
Load Switch | Composite Apparatu | Vacuum Breaker | lsolation/ Earthing Switch | ||
1 | Nominal VoltagekV | 12 | |||
2 | 1min Power Frequency Withstand Voltage kV | 42/48 | |||
3 | Lighting lmpulse Withstand Voltagekv | 75/85 | |||
4 | Rated Currency A | 630 | 630 | 630 | |
5 | Breaking Capacity | ||||
Closed Loop Breaking Current (A) | 630 | ||||
Cable Charging Breaking Current(A) | 135 | ||||
5% Active Load Breaking Current(A) | 31.5 | ||||
Ground Fault Breaking Current(A) | 200 | ||||
Short-Circuit Breaking Current (kA) | 31.5∗ | 25 | |||
6 | Rated Transfer Current A | 1500 | |||
7 | Maximum Current Near Circuit Breaker(A) | 125 | |||
8 | Short-Circuit Closing Current (kA) | 63 | 80∗ | 25 | |
9 | Short-Time Withstand Current(KA) | 25 | 25 | 25 | |
10 | Short-Circuit Duration (s) | 4 | 4 | 4 | |
11 | Machinery Service Life Time | 5000 | 5000 | 10000 | 3000 |
12 | Gas Pressure(MPa) | 0.025(20°C) | |||
13 | Annual Leakage Rate | ≤0.05% | |||
14 | Arc Extinguishing Method | Vacuum Extinction | |||
15 | Level of Protection | IP67/3X(Gas Tank/Sell) |
External Dimensions

1-way | 2-way | 3-way | 4-way | 5-way | |
W(mm) | 371 | 696 | 1021 | 1346 | 1671 |
H(mm) | 1336 | ||||
D(mm) | 850(total 935) |
Outdoor Open and Close Solution
