Pole Mounted Circuit Breaker

ZW20 口-12/24
The ZW20-12 outdoor pole-mounted demarcation circuit breaker switch adopts a mature box-type sealing structure, which is filled with SF6 gas inside and has good sealing performance, making it unaffected by the external environment. It is a maintenance-free product. Its spring operating mechanism adopts a direct-acting chain main drive and a multi-stage tripping system, with high action reliability. It is an excellent pole-mounted circuit breaker switch.
In addition to good sealing performance, it has added overcurrent protection, action counting, mechanism spring energy storage indication, and is equipped with an aviation socket for secondary electrical connection, which is convenient for combination with intelligent controllers.

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Features
Technical Indicators
Overall Dimension

1. Ideal equipment for urban and rural power grid transformation: It can be matched with the controller to realize remote control, telemetry, communication and remote adjustment, and realize the "four remote" functions. 2. Flexible and convenient operation: This product has electric energy storage, electric separation and combination, and also has manual energy storage, manual separation and combination, and can be remotely operated at close or long distances. 3. Low operating power and high reliability: The newly designed small electric elastic operating mechanism has the lowest number of mechanism parts and operating functions (about 30W). 4. Flexible installation method: It can be installed on a pole or seated, and can also be installed in a single pole or double pole at the same time. 5. Maintenance-free feature: The main circuit of the pole-mounted boundary circuit breaker switch, the secondary components and the operating mechanism are all sealed in SF6 gas (zero gauge pressure) and are not affected by the external environment. 6. Reliable sealing performance: The mature sealing structure technology is adopted, and the sealing performance is reliable. 7. Unique inlet and outlet wiring method: The silicone rubber sleeve is used to ensure sufficient insulation distance between the wiring terminals and excellent external insulation properties. 8. Safe use: An explosion-proof device is installed on the top of the box. Even if an unexpected internal failure occurs, no high-temperature gas or splashing will leak out.
Serial number Project Unit Value 1 Rated voltage kV 12 2 Rated current A 630、1250 3 Rated frequency Hz 50 4 Rated active load breaking current A 630、1250 5 Rated peak withstand current (peak) kA 50 6 Rated short-time withstand current (4s) kA 20、25 7 Rated short-circuit making current (peak value) kA 50 8 Mechanical life Second-rate 10000 9 Rated current switching performance Second-rate 1000 10 Power frequency withstand voltage (1min): phase to phase, to ground/break kV 42/48 11 Lightning impulse withstand voltage (peak) between phases, to ground/break kV 75/85 12 Secondary circuit 1min power frequency withstand voltage kV 2 13 Net weight kg 150

Serial number	Project	Unit	Value
1	Rated voltage	kV	12
2	Rated current	A	630、1250
3	Rated frequency	Hz	50
4	Rated active load breaking current	A	630、1250
5	Rated peak withstand current (peak)	kA	50
6	Rated short-time withstand current (4s)	kA	20、25
7	Rated short-circuit making current (peak value)	kA	50
8	Mechanical life	Second-rate	10000
9	Rated current switching performance	Second-rate	1000
10	Power frequency withstand voltage (1min): phase to phase, to ground/break	kV	42/48
11	Lightning impulse withstand voltage (peak) between phases, to ground/break	kV	75/85
12	Secondary circuit 1min power frequency withstand voltage	kV	2
13	Net weight	kg	150