Advanced Vacuum Circuit Breaker Vs1 for Indoor Applications

• Customization: Available
• Type: Circuit-Breaker
• Structure: Fixed Board
• Model NO.: ZN63(VS1)-12
• Certification: ISO9001:2000, VDE, CCC
• Form: All- packaged Type
• Operation Voltage: High Voltage
• Size: 3 Uint
• Application Range: High-rise Buildings
• Shell Material: Stainless Steel
• Shell Protection Grade: IP56
• Brand: Comewill
• Place of Origin: Zhejiang, China
• Winding Material: Pure Copper
• Rated Current: 630-1250A
• Breaking Capacity: 31.5ka
• Mechanical Lifespan: 20000 Times
• Phase: Three Phase, Single Phase
• Rated Frequency: 50Hz, 60Hz
• Product Name: Fixed Indoor High-Voltage Vacuum Circuit Breaker
• Transport Package: Carton
• Trademark: Comewill
• Origin: China
• HS Code: 8535900000
• Production Capacity: 50000PC/Month

Product Description

Specification

ZN63(VS1)-12 series Vacuum circuit breaker

Product overview 

Comprehensive product introduction of VS1 indoor vacuum circuit breaker:

Product nature: Three phase AC 50Hz indoor high-voltage switchgear, designed specifically for rated voltage 12kV (extended to 24kV and 35kV) power systems. Core function: Control and protection of transmission and distribution lines, especially suitable for frequent operations and short-circuit current breaking scenarios. Technical standards: comply with international and domestic standards such as GB1984, DL/T403, IEC60056, etc.

(1)Basic parameters Rated value Voltage level: 12kV (three-phase AC 50Hz) Rated current: 630A, 1250A, 1600A, 2000A, 2500A, 3150A Short circuit breaking current: 20kA, 25kA, 31.5kA, 40kA Peak short-circuit closing current: 50kA (20kA level) to 100kA (40kA level) Insulation performance Power frequency withstand voltage: 42kV/1min Lightning impulse withstand voltage: 75kV (peak)

(2)Mechanical characteristics Key dimensions Contact opening distance: 11 ± 1mm Contact stroke: 3.5 ± 0.5mm Average opening speed: 1.1 ± 0.2m/s Closing bounce time: ≤ 2ms (≤ 3ms@40kA ) Operational characteristics Opening time: ≤ 50ms Closing time: ≤ 100ms Mechanical lifespan: 20000-30000 cycles

(3)Structural characteristics Integrated design The operating mechanism is integrated with the circuit breaker body and supports fixed or handcart installation. The arc extinguishing chamber adopts vacuum arc extinguishing technology and is encapsulated in an epoxy resin insulation cylinder (APG process). Institutional configuration Energy storage motor: permanent magnet DC motor (AC/DC 110V/220V universal) Energy storage time: ≤ 15 seconds

(4)Usage conditions Environmental requirements Temperature range: -15 ℃~+40 ℃ (storage and transportation can reach -30 ℃) Altitude: ≤ 1000m (up to 4500m for plateau type) Relative humidity: daily average ≤ 95%, monthly average ≤ 90% Prohibited scenes Prohibited for use in flammable, explosive, strongly corrosive, or violently vibrating environments

(5)Installation adaptation Supporting switchgear Handcart style: Suitable for KYN28A-12 and other mid mounted cabinets (cabinet width 650/800/1000mm) Fixed type: compatible with cabinet types such as XGN2 and GG1A

The technical parameters of the form are for reference only.

Customized products can consult online customer service!

Serial number	Project		Units	Date
1	The rated voltage		kV	12
2	Rated frequency		Hz	50
3	Rated current		A	630~1250	1250	1250
4	Rated short circuit breaking current		kA	20	25	31.5
5	Rated short circuit closing current		kA	50	63	80
6	Rated peak tolerable current		kA	50	63	80
7	4S rated short circuit resistance current		kA	20	25	31.5
8	Rated insulation level	Power frequency withstand voltage (before and after rated break)	kA	42 (fracture48)
		Impact withstand voltage (before and after rated break)	kA	75 (fracture85)
9	Rated sequence of operation			points-0.3s-us points-180s-us points
10	Mechanical life		next	10000
11	Rated short circuit breaking current breaking times		next	50
12	Operating Mechanism Rated Closing Voltage (DC)		V	110,220
13	Rated tripping voltage of operating mechanism (DC)		V	110,220
14	From contact		mm	11±1
15	Overstock (compression length of contact spring)		mm	3.5±0.5
16	Three-phase points, closing bounce time		ms	≤2
17	Contact closing bounce time		ms	≤2
18	Average brake speed		m/s	1.1±0.2

19	Average closing speed		m/s	0.6±0.2
20	Break-brake time	At the highest operating voltage	S	≤0.05
		At the lowest operating voltage	S	≤0.08
21	Closing time		S	0.1		50
22	Main loop resistance of each phase		μΩ	60
23	Allowable wear cumulative thickness of dynamic and static contacts		mm	3

THE USE OF CONDITIONS

1. The environment temperature: upper limit +40ºC, lower limit-15ºC: (Allow storage at-30ºC)

2. Altitude: no more than 2000m

3. Relative humidity: daily average value is not greater than 95%, the monthly average is not greater than 90%

4. Saturated steam pressure: daily average value is not higher than 2.2x10-3 Mpa

5. monthly average is not higher than 1.8x10-3 Mpa

6. Earthquake intensity does not exceed 8 degrees

7. No fire, explosion, pollution, chemical corrosion and severe vibration place

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Packing & Delivery

Packing SpecificationsInner Packaging
Fuses are individually wrapped in anti-static foam or plastic sleeves to prevent abrasion.
Moisture-proof desiccant packets are inserted for sea transport.
Outer Packaging
Cartons: Made of 5-ply corrugated cardboard with load-bearing capacity ≥50kg.
Wooden cases (optional): For bulk orders, reinforced with steel straps and shockproof padding.

Delivery Terms
Lead Time
Standard orders (≤100 units): 7-10 working days after payment confirmation.
Bulk orders: 15-25 working days (subject to production schedule).

Company Profile

Welcome (Wenzhou) Electric Co., Ltd.: Innovation Leader in Smart Power Sector

Enterprise Positioning and Core Competitiveness
As a national high-tech enterprise, Welcome (Wenzhou) Electric Co., Ltd. positions itself as a "Smart Guardian of Power Systems," focusing on creating full-lifecycle value for high and low voltage power equipment. The company has established an integrated industrial chain covering cutting-edge technology R&D, precision intelligent manufacturing, and global services. With international certifications such as ISO 9001 and IEC standards, it provides safe and reliable power solutions for power grids, new energy, and industrial automation sectors in over 50 countries worldwide.

 

Three Core Product Lines: Technological Breakthroughs Enabling Scenario-Based Applications

1. Cable Accessories: Redefining Power Connection Standards
Specializing in 15-35kV cold-shrink power cable accessories, these products feature high insulation performance, corrosion resistance, and rapid installation capabilities.

2. Switchgear Auxiliary Equipment: Revolutionizing Smart Moisture-Proof Technology
The intelligent dehumidification device adopts a modular design for precise humidity control and low-power operation, ensuring stable equipment performance.

3. Measurement and Control Systems: Building a Digital Neural Network for Power Systems
High-precision current/voltage transformers and intelligent monitoring devices comply with IEC standards, widely applied in power grids, new energy, and industrial fields.

 

Vision and Mission
As a global leader in smart power equipment, Welcome Electric is committed to driving energy industry transformation through technological innovation and building a "safer, more efficient, and greener" power future. The company will continue to center on customer needs, leverage technological innovation as a driving force, and contribute Chinese wisdom and solutions to global energy transition.

FAQ

1. About the Product
Q: What is the rated voltage range of high-voltage high-breaking-capacity fuses?
A: Conventional models cover 7.2kV to 40.5kV, and some imported products reach 72.5kV. Please select the type according to the system voltage.
Q: How to distinguish the breaking capacity of fuses?
A: Check the nameplate parameters. The breaking capacity of domestic models is usually 50kA, and high-end imported products can reach 63kA (both refer to the effective value of rated short-circuit breaking current).
2. Selection and Application
Q: How to select the fuse specification for transformer protection?
A: The rated current of the fuse element is recommended to be 1.5-2 times the rated current of the transformer (e.g., select a 100-125A fuse for a 1000kVA/10kV transformer).
Q: Can it be used in DC systems?
A: Conventional products are suitable for AC systems. DC fuses with special arc-extinguishing structures should be selected for DC scenarios.
3. Installation and Maintenance
Q: What inspections are required before installation?
A: Confirm voltage class matching and no damage to the fuse element, and measure the insulation resistance of the base with an insulation tester (≥1000MΩ).
Q: Can the fuse be directly replaced after it blows?
A: First troubleshoot the cause (e.g., line short circuit), replace the fuse element with the same model, and check the contact resistance (≤50μΩ).
4. Certifications and Standards
Q: Which international standards do the products comply with?
A: Comply with IEC 60282-1 and IEEE C37.40. Some models are certified by KEMA/UL (certificate copies can be provided).
Q: What is the warranty period?
A: The warranty period is 18 months under normal use, and free replacement is provided for failures caused by manufacturing defects.

Note: Specific model parameters may be adjusted due to technical upgrades. Please confirm the latest specification before placing an order.