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FZN21 12KV Indoor Gas Insulated Air Load Break Switch

Basic Information
Place of Origin: XIAN
Brand Name: XG
Certification: ISO,CCC
Model Number: FZN21
Minimum Order Quantity: 1 set
Packaging Details: WOODEN CARTON
Delivery Time: 3-7 DAYS
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 2000 SETS
Detail Information
Rated Voltage: 7.2kV, 12kV, 17.5kV, 24kV, 36kV, 40.5kV Rated Current: 400A 630A, 1250A, 1600A, 2000A, 2500A, 3150A,
Frequency: 50/60Hz Poles Number: 3
Phase: 3 Phase Medium: Vacuum
Material: Galvanized Sheet And Accessories Standard: GB, IEC Standard
High Light:

FZN21 Air Load Break Switch


12KV Insulated Air Load Break Switch


400A Vacuum Load Break Switch

Product Description

1.FZN21-12KV 11KV 10KV indoor Gas Insulated Air Load Break Switch


FZN21-12(R)D/T125-31.5 Series Indoor AC high voltage load switch- fuse combination units appliances for three-phase AC 10kV, 50Hz power system, or with the complete power distribution equipment and loop-network switch cabinet , combined substation and other ancillary uses, is widely used in urban network construction and transformation engineering, industrial and mining enterprises, high-rise buildings and public facilities ,can be used as ring power supply unit or terminal equipment, play power distribution, control and protection.

Technical performance of the products meet the IEC publication 60265-1/FDIS “high voltage switches, Part 1: Rated voltages below 1kV over 52kV high voltage load switch”, IEC60420 “High Voltage AC load switch – fuse combination units”; and CB16926 “AC High-voltage load switch - fuse combination units”, GB3804 “3-63kV AC high voltage switches” requirement.


2.Product parameter data


No Item Unit Value
1 Rated voltage kV 12
2 Rated frequency Hz 50
3 Rated current A 630 125
4 Rated insulation level 1min power frequency withstand voltage kV Arc-quenching chamber fracture 48
(effective value) Earth , phase 42, insulating fracture 48
Lightning impulse withstand voltage (peak) Earth , phase 75, insulating fracture 85
5 Rated dynamic current (peak) kA 50  
6 4S thermal current kA 20  
7 Rated power load breaking current A 630  
8 Rated closed-loop breaking current A 630  
9 Rated cable charge breaking current A 10  
10 Rated breaking no-load transformer capacity KVA 1250
11 Rated breaking AC current A 3150
12 Rated short-circuit closed current kA 50
13 Rated current breaking times times 2000
14 Mechanical life times 10000
15 Permitted wear-thickness of vacuum arc-quenching chamber contact mm 2
16 Manual operating torque Nm >200






















3.Environmental application


A. The ambient air temperature: Max.: +40 °C. Min: -10 °C.

B. The altitude ≤ 1000m.

C. The relative humidity of air. daily average ≤ 90%. monthly average ≤ 95%.

D. The ambient air should not be obviously polluted by corrosively or the flammability gas and gleam. etc.

E. Without frequent shake.

F. Environment degree: grade Ⅱ.

4.Technical diagram




5. Warehouse view




Contact Details

Phone Number : +8613319220197

WhatsApp : +8613319220197