Name: China Alternative Design Of ABB Fixed Type Vacuum Circuit Breaker Manufacturers Suppliers Factory
Brand: XDTZ
SKU: 259390962

VTZ-12 indoor high-voltage vacuum circuit breaker (special model for Tongzhong Electrical Appliances) is used for indoor switchgear with rated voltage 12kV, AC 50/60Hz, adopting modular operating mechanism, suitable for various industrial and mining enterprises, power grid equipment, trolley unit and KYN28A-12 type switchgear for matching, or as a stationary unit with corresponding mechanical interlocking for XGN2 and other Fixed cabinet. This programme is used to alternative design Of ABB Fixed Type Vacuum Circuit Breaker.

About us

Founded in 2014, Shaanxi West Power Tongzhong Electrical Co., Ltd. is a leading innovator in the electrical industry with over 20 years of industry experience. Strategically located at No. 1 East Gaoxin Avenue in the High-Tech Development Zone of Baoji City, Shaanxi Province, our prime location offers excellent connectivity through expressways and high-speed railways. This advantageous location allows us to efficiently serve both domestic and international markets, ensuring fast response times and seamless logistics.

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.

xdtz

Product Specifications

Specification Sheet

No.	Name	Unit	Data
1	Rated Voltage	kV	12
2	Rated Frequency	Hz	50/60
3	Rated Current	A	630/1250
4	Rated Power Frequency Withstand Voltage	kV	48(Common value)/42(Across the isolating distance)
5	Rated Lightning Impulse Withstand Voltage	kV	95
6	Rated Short-Circuit Breaking Current	kA	25/31.5
7	Rated Short-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	Cycles	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)
6	Closing Time	ms	30～70
7	Opening Time	ms	20～50
8	Contact Bouncing Duration at Closing Operation	ms	≤2
9	No-Simultaneity of Closing/Opening Operations of 3-Phase	ms	≤2

Product Advantages

3AE Siemens Circuit Breaker Retrofit has many advantages:

Circuit Breaker Performance

E2-C2-M2
Easy Maintenance

The modular mechanism design allows for the replacement of closing and opening coils without the need to dismantle other components. Users can easily replace the coils, and no testing or adjustment is required after replacement, making future operation and maintenance more convenient.
High Conductivity

The rationally designed conductive circuit meets the temperature rise level of 1.1 times the rated current.
Large scope of use

series products cover a wide range, from rated current 630A to rated current 5000A, from rated breaking current 20KA to 50kA comprehensive coverage; cover all environments within 4500 metres above sea level; cover the -40 ℃ ~ 40 ℃ use of the environment.