Medium Voltage Switchgear Component, Vsg-12 Fixed Type Vacuum Circuit Breaker

• Customization: Available
• Breaking Capacity: Energy, Industrial, Infrastructure
• Operation: Electric Type
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Modular
• Poles Number: 3
• Type: Circuit Breaker
• Function: Overcurrent Protection
• Certification: ISO9001-2000, CE
• Transport Package: Ply Packing
• Trademark: CHKB
• Origin: Wenzhou, China
• HS Code: 8504403090
• Production Capacity: 100000
• Package Size: 400.00cm * 400.00cm * 300.00cm
• Package Gross Weight: 100.000kg

Product Description

 VSG-12 Indoor High Voltage Vacuum Circuit Breaker (Modular)

The VSG-12 is a state-of-the-art, medium-voltage, indoor vacuum circuit breaker designed for reliability and longevity in air-insulated switchgear systems. It incorporates advanced solid-insulated pole technology and a modular mechanism, making it a robust and versatile solution for modern power distribution networks. Its primary function is to reliably make, carry, and break currents under normal circuit conditions, and to automatically and safely interrupt short-circuit currents under abnormal conditions.

Applications

This circuit breaker is engineered for a wide range of medium-voltage power distribution applications across multiple sectors:

Energy: Power plants (thermal, hydro, solar, wind), substations.
Industry: Manufacturing plants, chemical plants, steel mills, mining operations.
Construction & Infrastructure: Large commercial buildings, hospitals, airports, data centers.
Transportation: Railway electrification systems.

Key Configurations

Advanced Technology: Utilizes Vacuum Interruption Technology and Solid-Sealed Pole (Epoxy Resin Encapsulated) design. This construction makes the interrupter units highly resistant to environmental contaminants like dust, moisture, and corrosive gases, ensuring consistent performance and a long service life.
Modular & Flexible Design: The modular mechanism simplifies manufacturing, assembly, installation, and future maintenance. It can be configured as either a Fixed or Withdrawable unit within a switchgear panel, offering significant flexibility for various project requirements.
Exceptional Durability & Long Life:
High Mechanical Life: Rated for up to 30,000 operations, making it ideal for applications requiring frequent switching.
Strong Breaking Capacity: Capable of interrupting full-rated short-circuit current up to 50 times, demonstrating high endurance under fault conditions.
High Reliability & Safety: Equipped with comprehensive mechanical and electrical interlocking functions to prevent incorrect or unsafe operation, ensuring the safety of both personnel and equipment.
Versatile Application: Suitable for reclosing duties, a critical function in modern power systems to restore power quickly after a transient fault.

Specification

Technical Specifications

(Custom configurations available upon request.)

Project		Unit	Parameter
Rated voltage		kV	12
Maximum operating voltage		kV	12
Rated current		A	630	1250	1600
Rated short-circuit breaking current		kA	20	25	31.5
Rated short-circuit making current		kA	50	63	80
Rated peak withstand current		kA	50	63	80
Rated short-time withstand current (4s)		kA	20	25	31.5
Rated insulation level	Power frequency withstand voltage (before & after breaking)	kV	42 (Across open break 48)
	Impulse withstand voltage (before & after breaking)	kV	75 (Across open break 85)
Rated operating sequence			O-0.3s-CO-180s-CO

After Sales Service

Standard Warranty: 12 months
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: On-site or remote operation/maintenance training.

Company Profile

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FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 15–30 days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: What documents do you provide for export?
A: Full export package (Commercial Invoice, Packing List, Bill of Lading, COC, etc.).

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.