12KV Vacuum Interrupter For Load Break Switch

Model: TF314B, TF314P, TF314QN, TF314V, TF314NV, TF314J, TF314L, TF314X, TF324P, TF314D, TF314G

The Sunway Hanguang 12kV Vacuum Interrupter for Load Break Switches is a core arc-extinguishing unit specifically developed for medium-voltage load break switches. As a professional manufacturer with over fifty years of experience in the electrical field, Sunway Hanguang leverages its high-end intelligent production lines and core patents to create high-quality products adapted to 50/60Hz AC systems. This 12kV Vacuum Interrupter for Load Break Switches addresses traditional pain points with its high vacuum degree and arc-free interruption advantages, and has received multiple authoritative certifications and is widely used globally. As a reliable supplier, we provide comprehensive support from our manufacturing base in China, with standardized factory processes ensuring quality throughout the entire process.

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Product Description

The 12kV Vacuum Interrupter for Load Break Switches is a core component specifically designed by Sunway Hanguang for medium-voltage load break switches, adapted to 50/60Hz AC systems. With a vacuum degree of ≤1.33×10⁻³Pa, it achieves arc-free interruption and zero re-ignition, overcoming the drawbacks of traditional products such as high maintenance, significant pollution, and weak small-current interruption capabilities.

The company has been deeply involved in the electrical field for over fifty years, utilizing imported high-end equipment to build intelligent production lines and holding over 20 core patents. Its products have passed international authoritative certifications. This model of 12kV Vacuum Interrupter for Load Break Switches has accumulated over 150,000 installations worldwide, serving more than 60 countries and regions, and has been recognized by well-known domestic and international companies.

Product Parameters

ELECTRICAL RATINGS(3PHASE) SYMMETRICAL BASIS
Model NO.	VITF 12/630-20B	VITF 12/630-20P	VITF12/630-20	VITF 12/630-20V	VITF12/630-20	VITF 12/630-20J	VITF 12/630-20L	VITF 12/1250-20P	VITF 12/630-20D	VITF 12/630-20G
Rated frequency	50/60Hz	50/60Hz	50/60Hz	50/60Hz	50/60Hz	50/60Hz	50/60Hz	50/60Hz	50/60Hz	50/60Hz
Rated Voltage	12kV,r.m.s	12kV,r.m.s	12kV,r.m.s	12kV,r.m.s	12kV,r.m.s	12kV,r.m.s	12kV,r.m.s	12kV,r.m.s	12kV,r.m.s	12kV,r.m.s
Rated short-time power-frequency withstand voltage (1 min)	42kV,r.m.s	42kV,r.m.s	42kV,r.m.s	42kV,r.m.s	42kV,r.m.s	42kV,r.m.s	42kV,r.m.s	42kV,r.m.s	42kV,r.m.s	42kV,r.m.s
Rated lightning impulse withstand voltage	95kV,Peak	75kV,Peak	95kV,Peak	95kV,Peak	95kV,Peak	95kV,Peak	75kV,Peak	95kV,Peak	95kV,Peak	95kV,Peak
Rated Current	630A	630A	630A	630A	630A	630A	630A	1250A	630A	630A
Maximum Contact Resistance at Minimum Closing Force	≤35Micro ohms	25Micro ohms	35Micro ohms	≤35Micro ohms	≤35Micro ohms	≤35Micro ohms	25Micro ohms	35Micro ohms	≤35Micro ohms	≤35Micro ohms
Rated short-time withstand current	20kA,r.m.s	20kA,r.m.s	20kA,r.m.s	20kA,r.m.s	20kA,r.m.s	20kA,r.m.s	20kA,r.m.s	20kA,r.m.s	20kA,r.m.s	20kA,r.m.s
Rated duration of short-circuit	4s	3s	4s	4s	4s	4s	3s	4s	4s	4s
Rated peak withstand current	50kA,r.m.s	50kA,Peak	50kA,r.m.s	50kA,r.m.s	50kA,r.m.s	50kA,r.m.s	50kA,Peak	50kA,r.m.s	50kA,r.m.s	50kA,r.m.s
Rated short-circuit making Current	50kA,r.m.s	50kA,r.m.s	50kA,Peak	50kA,r.m.s	50kA,r.m.s	50kA,r.m.s	50kA,r.m.s	50kA,Peak	50kA,r.m.s	50kA,r.m.s
Rated active load breaking current	630A	630A	630A	630A	630A	630A	630A	630A	630A	630A
Rated closed-loop breaking current	630A	630A	630A	630A	630A	630A	630A	630A	630A	630A
Rated capacity of no-load transformer	1250kVA	10A	100A	1250kVA	1250kVA	1250kVA	10A	100A	1250kVA	1250kVA
Rated cable-charging breaking current	10A	630A	10A	10A	10A	10A	630A	10A	10A	10A
Rated breaking current of single capacitor bank	400A	400A	400A	400A	400A	400A	400A	400A	400A	400A
Rated breaking current of back-to-back capacitor bank	400A	3150A	400A	400A	400A	400A	3150A	400A	400A	400A

MECHANICAL DATA
Model NO.	VITF 12/630-20B	VITF 12/630-20P	VITF12/630-20	VITF 12/630-20V	VITF12/630-20	VITF 12/630-20J	VITF 12/630-20L	VITF 12/1250-20P	VITF 12/630-20D	VITF 12/630-20G
Interrupter Weight(Approx.)	0.98kg	1.18kg	1.64kg	1.81kg	1.81kg	1.09kg	1.09kg	1.18kg	1.02kg	1.12kg
Weight of movable parts	0.41kg	0.8kg	0.58kg	0.54kg	0.54kg	0.36kg	0.8kg	0.58kg	0.43kg	0.49kg
Closing force due to bellow and atmosphere	70±30N	8.0kgF	60±30N	70±30N	70±30N	70±30N	8.0kgF	60±30N	70±30N	70±30N
Force required to hold contacts open at full stroke	130±50N	11.8kgF	130±40N	130±50N	130±50N	130±50N	11.8kgF	130±40N	130±50N	130±50N

MECHANICAL REQUIREMENTS(REF. VCB)
Model NO.	VITF 12/630-20B	VITF 12/630-20P	VITF12/630-20	VITF 12/630-20V	VITF12/630-20	VITF 12/630-20J	VITF 12/630-20L	VITF 12/1250-20P	VITF 12/630-20D	VITF 12/630-20G
Clearance between open contacts	8±1mm	8±1 mm	9±1 mm	9±1mm	9±1mm	8±1mm	8±1 mm	9±1 mm	8±1mm	8±1mm
Average opening speed(average of first 75% of contact gap)	1.2±0.2m/s	1.0-1.4m/Sec	1.0±0.2m/Sec	1.2±0.2m/s	1.2±0.2m/s	1.2±0.2m/s	1.0-1.4m/Sec	1.0±0.2m/Sec	1.2±0.2m/s	1.2±0.2m/s
Average closing speed(average of last 30% of contact gap)	0.6±0.2m/s	0.6-1.0m/Sec	0.6±0.2m/Sec	0.6±0.2m/s	0.6±0.2m/s	0.6±0.2m/s	0.6-1.0m/Sec	0.6±0.2m/Sec	0.6±0.2m/s	0.6±0.2m/s
Rated added external contact final force	1000±100N	1000±100N	1000±100N	1000±100N	1000±100N	1000±100N		1000±100N	1000±100N	1000±100N
Added external contact force at contact touch point	750±80N	750±80N	750±80N	750±80N	750±80N	750±80N		750±80N	750±80N	750±80N
Contact bouncing duration at closing operation	≤2ms	≤2ms	≤2ms	≤2ms	≤2ms	≤2ms		≤2ms	≤2ms	≤2ms
Closing and Opening non-simultaneity of three-phase Contacts	≤2ms	≤2ms	≤2ms	≤2ms	≤2ms	≤2ms			≤2ms	≤2ms
Maximum Rebound during opening	≤2ms	≤2ms	≤2ms	≤2ms	≤2ms	≤2ms		2mm	≤2ms	≤2ms

LIFE (ESTIMATED)
Model NO.	VITF 12/630-20B	VITF 12/630-20P	VITF12/630-20	VITF 12/630-20V	VITF12/630-20	VITF 12/630-20J	VITF 12/630-20L	VITF 12/1250-20P	VITF 12/630-20D	VITF 12/630-20G
Storage life	20years	20Years	20Years	20years	20years	20years	20Years	20Years	20years	20years
Mechanical endurance	10000 Operations	10000 Operations	10000 Operations	10000 Operations	10000 Operations	10000 Operations	10000 Operations	10000 Operations	10000 Operations	10000 Operations
Contacts limit erosion	3mm	3mm	3mm	3mm	3mm	3mm	3mm	3mm	3mm	3mm
Meets or exceeds the electrical endurance requirements of class E2 for autoreclosing duty per IEC 62271-200 and JB 8738-2008.
Rated Characteristics to be given on request

Product Features and Advantages

The Sunway Hanguang 12kV Vacuum Interrupter for Load Break Switches features upgraded and optimized materials, structure, and testing, with outstanding core advantages:

1. High-quality materials, excellent performance: Uses high-purity Cu-Cr alloy contacts with a current interruption value of <3A, suppressing operating overvoltage; paired with imported bellows, the annual leakage rate is <0.5%, and the fatigue life exceeds 10,000 cycles.

2. Optimized structure, wide applicability: Integrated design of ceramic shell and metal flange, resistant to voltage, temperature, and high altitude, suitable for pollution level IV, and capable of handling various extreme working conditions.

3. Rigorous testing, controllable quality: Each unit undergoes 10 comprehensive tests, with QR code traceability, resulting in a failure rate of <0.03%, far superior to the industry average. 4. Convenient Adaptation and Comprehensive Service: Compatible with mainstream load break switch platforms, allowing for quick, tool-free replacement. Optional intelligent monitoring modules are available, and 25 global technical centers provide 24/7 service.

Product Applications

This product is widely used in urban ring network cabinets, industrial power distribution rooms, data centers, photovoltaic/wind power substations, and other scenarios. It is adapted to extreme working conditions and meets the needs of power line switching and transformer operation, contributing to smart power distribution and carbon neutrality.

Frequently Asked Questions

1. Customization Services: Supports customization of rated current, intelligent modules, etc., and provides OEM/ODM services to meet various standard requirements.

2. Quality Assurance: Core components are carefully selected from well-known brands, with full-process quality control, QR code traceability, and compliance with multiple international and domestic standards.

3. Warranty and After-Sales Service: 10-year limited warranty, guaranteeing vacuum decay ≤20%, with comprehensive after-sales support provided by global service centers.

4. Installation Guidelines: Moisture-proof and shock-resistant transportation, standardized installation, and post-installation testing of withstand voltage and mechanical characteristics to ensure compatibility.

Company Commitment

As a professional manufacturer and supplier, Sunway Hanguang, relying on its China production base and global service network, continuously optimizes the performance of its 12kV Vacuum Interrupter For Load Break Switch, providing reliable, efficient, and environmentally friendly solutions for the global medium-voltage power distribution field.

12KV Vacuum Interrupter For Load Break Switch