ZW32-12 Outdoor Vacuum Circuit Breaker (hereinafter referred to as "circuit breaker") is a three-phase AC 50Hz outdoor high voltage switchgear mainly used in 10kV outdoor distribution systems of rural and urban networks, as a means of breaking and closing load currents, overload currents, and short-circuit currents; It can also be used in other similar places;Structural features: The circuit breaker consists of three-phase pillars and an operating mechanism, with a simple structure. The pillar adopts epoxy resin solid insulation, which has the advantages of high and low temperature resistance, UV resistance, and aging resistance;Circuit breaker performance: E2-C2-M2.

Product Specifications

Specification Sheet

No.	Name	Unit	Data
1	Rated Voltage	kV	12
2	Rated Frequency	Hz	50
3	Rated Current	A	630/1250
4	Rated Power Frequency Withstand Voltage	kV	34(wet test)/42 (dry test)
5	Rated Lightning Impulse Withstand Voltage	kV	75(Common value) /75(Across the isolating Distance)
6	Rated Short-Circuit Breaking Current	kA	25/31.5
7	RatedShort-Circuit Making Current (Peak)	kA	63/80
8	Rated Withstand Current (Peak)	kA	63/80
9	Rated Duration of Short-Circuit	s	4
10	Operating Cycles at Rated Short-Circuit Breaking Current	Times	E2
11	Mechanical Endurance	Times	10000
12	Standard Operating Sequence	-	O-0.3s-CO-180s-CO
13	Allowable Wear Thickness of Contact	mm	≤3

Mechanical Characteristics

No.	Name	Unit	Data
1	Clearance between Moved and Fixed Contact	mm	9±1
2	Contact Overtravel	mm	3.5±0.5
3	Average Closing Speed	m/s	0.7±0.2
4	Average Opening Speed (Average Speed of First Opening at 6mm)	m/s	1.1±0.2
5	Rated Contact Pressure	N	2500±200N(25kA) 3100±200N(31.5kA) 4800±300N(40kA)
6	Closing Time	ms	30～70
7	Opening Time	ms	20～50
8	Contact Bouncing Duration at Closing Operation	ms	≤2
9	No-Simultaneityof Closing/OpeningOperations of 3-Phase	ms	≤2

Product Advantages

ZW32-12 Outdoor Vacuum Circuit Breaker has many advanages:

1.Main performance after attaching other devices:

1) Outdoor isolation switch and circuit breaker can be installed to form a body, circuit breaker and isolation switch have a reliable mechanism interlock, with anti-misoperation function.

2) Can be installed with external electronic PT, so that the circuit breaker has an operating power supply and has anti-surge current, overcurrent protection, on Near remote control function.

3) The arrester can be installed, and the arrester can be installed on the power side or the load side according to the needs of the user.

4) Can be combined with the distribution network automation device to form outdoor vacuum recloser, sectioner, intelligent control equipment.

5) Can be used with the column switch remote monitoring system, using GPRS wireless communication, to achieve outdoor real Air circuit breaker remote real-time monitoring, to meet the requirements of distribution automation.

2.Wide range of use: adapt to the harsh environment, the product can withstand minus 25℃ low temperature. Meet the 2000m altitude requirements. Under special requirements, the minimum can reach -40℃, and the special requirements can meet the altitude of 4000 meters.

Product Applications

ZW32-12 Outdoor Vacuum Circuit Breaker has many applications:

Outdoor 35KV or 110kV substation

10KV transmission

Agricultural grid power system

10KV transformation lines

why choose us

Excellence in research and development
Innovation is at the core of our business. We have independently developed the VTZ Series Vacuum Circuit Breakers and continue to invest in research and development to meet the evolving needs of the electrical industry. Our R&D team consists of senior technical experts with decades of experience in the design and manufacture of high and low voltage electrical equipment. Their expertise, combined with our advanced facilities, allows us to stay ahead of industry trends and continually optimize our product offerings.

Advanced manufacturing and production
We operate one of the most advanced and standardized assembly line manufacturing facilities in the industry, equipped with the latest technology, enabling us to produce a wide range of high quality electrical products with precision and efficiency. Wecomply with GB 1984-2024 and GB/T11022-2020 standards to ensure the highest quality. Our commitment to excellence is reflected in the durability, reliability, and compatibility of our products.

Adapting to industry trends
Guided by our strategic development plan, we continuously adapt our products to align with the latest trends in smart grids, power system automation, and high altitude environments. Our leading high-current, high-voltage, and long-life products are designed to meet the rigorous demands of today's power systems, providing our customers with reliable, maintenance-free solutions that stand the test of time.

Wide range of products
We offer a wide range of products, including indoor and outdoor vacuum circuit breakers, switchgear, low voltage switch equipment, and various electrical accessories. Each product is designed to meet the specific needs of our customers, and can operate stably in urban distribution networks, industrial melting, new energy power generation, rural power supply and other places, and can still maintain excellent reliability even in harsh environments.

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