ZN63A(VS1)-12 series indoor high-voltage vacuum circuit breakerDetailed product description：

I. Overview
The ZN63A (VS1) indoor high-voltage vacuum circuit breaker is a three-phase AC 50HZ indoor high-voltage switchgear with a rated voltage of 7.2~kV. The circuit breaker complies with China's national standards GB1984-89 "AC High Voltage Circuit Breaker", GB3855-1996 "3.6-40.5kV Indoor AC High Voltage Vacuum Circuit Breaker", DL403-01 "10-35kV Indoor High Voltage Vacuum Circuit Breaker Ordering Technical Conditions" and relevant IEC standards, and has reliable interlocking function.
The ZN63A (VS1) indoor high-voltage vacuum circuit breaker can perform frequent operations and has the ability to open and close multiple times and quickly reclose.
The ZN63A (VS1) indoor high-voltage vacuum circuit breaker is designed with a front and rear split structure, which can be used as a fixed installation unit or as a separate handcart with the chassis.

2、 Environmental conditions for use
1. Surrounding air temperature:+40 ℃ to -15 ℃ (daily average not exceeding -35 ℃);
2. Altitude not exceeding 1000 meters;
3. The monthly average relative humidity of the air shall not exceed 90%, and the daily average shall not exceed 95%;
4. The seismic intensity shall not exceed 8 degrees;
5. The place of use is free from flammable, explosive hazards, chemical corrosion, and severe vibration.

3、 ZN63A (VS1) -12 series indoor high-voltage vacuum circuit breaker model and significance


4、 Ordering Notice
Users should indicate when placing an order:
1. Circuit breaker model, name, and order quantity;
2. Rated voltage, rated current, and rated short-circuit breaking current of the circuit breaker.
3. Rated operating voltage;
4. Names and quantities of spare parts and components;
5. If the user has any other special requirements, they can specify them when placing an order.

5、 Main technical parameters of ZN63A (VS1) -12 series indoor high-voltage vacuum circuit breaker

Rated voltage kV			twelve
Rated frequency Hz			fifty
Rated insulation level	1-minute power frequency withstand voltage Phase to phase, relative to ground/isolated fracture kV		42/48 (valid value)
	Lightning impulse tolerance Phase to phase, relative to ground/isolated fracture kV		75/85 (peak)
Rated operating sequence			Fen-F combined Fen-F1 combined Fen*
Main circuit resistance μ Ω			≤40
Mechanical lifespan times			one thousand
model	Rated current A	Rated short-circuit breaking current kA	Rated short-circuit closing current (peak) kA	rated short-circuit Duration S	Rated short-circuit breaking Current interruption times (times)
ZN□-12/630-20	six hundred and thirty	20/25	50/63	four	one hundred
ZN□-12/1250-20	one thousand two hundred and fifty
ZN□-12/1250-31.5	one thousand two hundred and fifty	thirty-one point five	eighty		fifty
ZN□-12/1600-31.5	one thousand and six hundred
ZN□-12/2000-31.5	two thousand
ZN□-12/2500-31.5	two thousand and five hundred
ZN□-12/1250-31.5	one thousand two hundred and fifty	<>	one hundred		thirty
ZN□-12/1250-40	one thousand and six hundred
ZN□-12/1600-40	two thousand
ZN□-12/2000-40	two thousand and five hundred
ZN□-12/2500-40	three thousand one hundred and fifty
Note: When the short-circuit breaking current is 20, 25, and 31.5kA, f=0.3s, f1=180s Short circuit breaking current 40kA, f=0.180s, f1=180s

ZN63-12/1250-31.5 (800mm) Appearance and installation dimensions (210mm apart)

Internal electrical schematic diagram of circuit breaker

ZN63A (VS1) -12 series indoor high-voltage vacuum circuit breaker