Vacuum Circuit Breaker Silver Contact is a core conductive and arc-extinguishing component used in medium- and high-voltage electrical switching equipment. It is mainly installed inside the VCB to undertake current conduction, circuit breaking, arc extinguishing and electrical insulation under rated and short-circuit conditions. With high-quality silver plating and excellent alloy base material, it ensures stable electrical performance, low contact resistance and long service life in power distribution systems.
vacuum circuit breaker silver contact in electrical widely used in 12kV, 24kV and 40.5kV power distribution systems.
Adopts high-quality CuCr50 copper-chromium alloy as base material, with strict control over material composition, density, hardness and electrical conductivity.
Professional silver plating process ensures uniform coating thickness, strong adhesion, low contact resistance and excellent oxidation resistance.
| Rated Voltage | 12kV/24kV/40.5KV |
| Rated Current | 630A,1250A,1600A, 2000A,2500A,3150A, 4000A |
| Base Material | CuCr50 Copper-Chromium Alloy |
| Surface Treatment | Silver Plated |
| Silver Layer Thickness | 5-20μm |
| Contact Resistance | ≤50 μΩ(DC 100A test) |
| Chopping Current | ≤5A |
| Mechanical Life | ≥10,000-30,000 operations |
| Short-Time Withstand Current(4s) | 20kA,25KA,31.5KA,40kA, 50kA |
| Peak Withstand Current | 2.5×short-time withstand current |
| Power Frequency Withstand Voltage(1min) | 12KV:42KV;24kV:65kV; 40.5kV:95kV |
| Lightning Impulse Withstand Voltage | 12KV:75kV;24kV:125kV; 40.5KV:185kV |
| Application Standard | IEC 62271-100,GB/T 1984 |
1.Vacuum circuit breakers (VS1, ZN63 series, etc.)
2.High-voltage switch cabinets
3.Load break switches
4.Power distribution and transmission equipment
Q:What services does your company offer?
A:Wenzhou Xifa Electric Power Equipment Co., Ltd. provides customized design, precision processing and fast after-sales support to meet customers’requirements for different rated currents, breaking capacities and installation dimensions.
Q:What tests will the product undergo before vacuum circuit breaker silver contact in electrical is manufactured?
A: It fully comply with IEC 62271-100, GB/T 1984 and other international and national standards, with stable performance and long service life,which undergoes strict testing including:
1.Contact resistance testing to ensure excellent electrical conductivity and low heat generation;
2.Silver coating thickness inspection to maintain anti-oxidation, anti-ablation and long service life;
3.Hardness and density testing to verify mechanical strength and material stability against short-circuit forces;
4.Dimensional accuracy detection to ensure good interchangeability and assembly compatibility;
5.Temperature rise and load current simulation tests to simulate actual operating conditions and verify long-term safe and reliable operation.
All test records are kept complete and traceable, ensuring that every product meets technical specifications and customer application requirements.
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No. 391, Jingqi Road, Yanpan Industrial Zone, Yueqing City, Zhejiang Province, China
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