ZW32-40 kV Series Intelligent Type Outdoor High Voltage AC Vacuum Circuit Breaker adopts an integrated solid sealing pole with unique design and a highly reliable operating mechanism. The device is mainly used in medium voltage overhead line power grid as load current, overload current and short-circuit current.High reliability.It is completely maintenance-free throughout its life.It has high mechanical life and electrical life. Small volume and lightweight, easy to install. Product Advantage 1. When considering the advantages of vacuum circuit breakers, it is important to note their superior features that set them apart from other types of circuit breakers. These advantages make vacuum circuit breakers a popular choice for various applications in the electrical industry. 2. One key advantage of vacuum circuit breakers is their high reliability. Due to the absence of any medium for arc extinction, vacuum circuit breakers are able to interrupt fault currents quickly and efficiently. This results in minimal downtime and increased operational efficiency. 3. Another advantage of vacuum circuit breakers is their compact design. With no need for bulky insulating materials, vacuum circuit breakers are more space-efficient and can be easily integrated into existing electrical systems. 4. Furthermore, vacuum circuit breakers are known for their long service life and low maintenance requirements. This makes them a cost-effective solution for both new installations and retrofit projects. 5. In addition, vacuum circuit breakers are environmentally friendly, as they do not use any harmful gases in their operation. This makes them a sustainable choice for environmentally conscious organizations. 6. Overall, the advantages of vacuum circuit breakers make them a reliable and efficient choice for a wide range of electrical applications. Technical Parameters 5.1 Circuit Breaker’s Main Technical Parameters Table

S/N	Name	Unit	Data Value
1	Rated Voltage	kV	40.5
2	Rated Current	A	1250/1600
3	Rated Frequency	Hz	50/60
4	1 min. Power Frequency Withstand Voltage (wet/dry)	kV	80 95/118
5	Lightning impulse Withstand Voltage (To earth/Fracture)	kV	185/215
6	Rated Short-circuit  Breaking Current	kA	25/31.5
7	Rated Short-circuit  Closing Current (Peak Value)	kA	63/80
8	Rated Short-time Withstand Current	kA	25/31.5
9	Rated Peak value Withstand Current	kA	63/80
10	Rated Short-time Continuous Time	s	5
11	Rated Operating Cycle	Times	0 – 0.3s – C0 – 180s – CO
12	Rated Short-circuit Current – Breaking Times	Times	30
13	Mechanical Life	Times	10000
14	Mechanism Control Voltage	V	AC/DC 220  AC/DC 110
15	Secondary Circuit 1 min Power Frequency Withstand Volt	kV	2

5.2 Circuit Breaker’s Mechanical Properties Adjustment Parameters

S/N	Name	Unit	Data Value
1	Contact Spacing	mm	16 ± 1
2	Contact Overtravel	mm	3 ± 0.5
3	Opening Speed	m/s	1.4 – 1.8
4	Closing Speed	m/s	0.4 – 1.8
5	Contact Closing Bounce Time	ms	≤ 5
6	Phase Center Distance	mm	460 ± 2
7	Three-phase Opening and Closing Asynchrony	m/s	≤ 2
8	Conductive Circuit Resistance of Each Phase	μΩ	< 80
9	Closing Time	ms	≤ 100
10	Opening Time	ms	≤ 50
11	Weight	kg	270

USAGE USAGE: ENVIRONMENTAL CONDITION 1. Altitude: ≤ 3000m, If the altitude is higher than 3000m, the rated insulation level shall be corrected accordingly. 2. Ambient temperature: -30oC ~ +65oC 3. Wind Speed: 34m/s 4. Wind pressure: 700Pa 5. Pollution level: IV level 6. Icing thickness: Not more than 10mm 7. Storage Temperature: -40oC ~ +85oC Outline and Dimension