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This product is a 12kV series indoor disconnect switch, designed and manufactured to meet the trend of fixed-type high-voltage switchgear and ring-main units developing toward compact and small-sized forms. It has a three-position structure with a fully insulated base plate, fitted with coaxial locking and a comprehensive mechanical interlocking mechanism, giving it a compact, small appearance.
Features:
The three-position structure enables flexible switching among the open, closed, and earthed states; combined with coaxial locking and interlocking mechanisms, it effectively prevents mis-operation, offering relatively high safety and reliability; the fully insulated base-plate design improves the product's insulation level and operating safety.
Applications:
Is the ideal complementary switch for compact box-type switchgear, widely used in urban and rural distribution grids, industrial/mining enterprises, and various compact distribution facilities, undertaking isolation, switching, and earthing-protection functions, meeting the supporting requirements of modern switchgear's trend toward compact design.
| Item | Unit | Data | |
| Rated Voltage | kV | 12 | |
| Rated Frequency | Hz | 50 | |
| Rated Current | A | 630-1250 | |
| Rated Thermal Withstand Current (4s) | kA | 25-31.5 | |
| Rated Dynamic Withstand Current | kA | 63-80 | |
| Rated Insulation Level | Power Frequency Withstand Voltage | kV | Phase to phase, phase to earth: 42, break: 48 |
| Lightning Impulse Withstand Voltage | kV | Phase to phase, phase to earth: 75, break: 85 | |
Zhejiang Yingchuang Electric Co., Ltd. was established in March 2018 and is a qualified approved supplier for State Grid and China Southern Power Grid. We specialize in the R&D and manufacturing of high-voltage electrical equipment, including primary-and-secondary integrated pole-mounted circuit breakers, indoor/outdoor vacuum circuit breakers, disconnecting switches, ring main units, and complete switchgear assemblies. Guided by "craftsmanship quality and sincere service," we offer full OEM/ODM customization across our entire product range. In 2024, we were recognized as a Provincial Innovative SME and a National High-Tech Enterprise.
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