ZN63-12 Indoor Compact Vacuum Circuit Breaker, manufactured by China's Jinhand Electrical, integrates a solid-insulated, epoxy-encapsulated pole unit with a permanent magnet mechanism for maintenance-free operation. As a reliable factory and supplier, we offer a cost-effective solution with enhanced environmental tolerance and heat dissipation for broad applications.
1.Environmental Tolerance: The solid-insulated structure addresses environmental tolerance issues, significantly expanding its application range.
2.Maintenance-Free Operation: As the first domestically developed circuit breaker to achieve a maintenance-free concept, it reduces long-term maintenance costs and efforts.
3.High Reliability: The use of a highly reliable permanent magnet operating mechanism ensures the actuating system operates without maintenance.
4.Intelligent Control System: The electronic control section utilizes photoelectric proximity switches instead of traditional auxiliary switches, ensuring a fully electronic power supply and intelligent control units for maintenance-free performance.
| Project | Unit | Parameter | ||||
| Rated Voltage | kV | 12 | ||||
| Rated Frequency | Hz | 50 | ||||
| Rated Current | A | 630-1250 | 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 | ||
| 4s Rated Short-Time Withstand Current | kA | 20 | 25 | 31.5 | ||
| Rated Insulation Level | 1min Power Frequency Withstand Voltage | kV | 42(phase-to-phase,to ground)/48(interrupter)RMS;75(phase-to-phase,to ground)/85(interrupter)Peak; | |||
| Lightning Impulse Withstand Voltage | ||||||
| Rated Operating Sequence |
|
Open-0.3s-Close/Open-180s-Close/Open | ||||
| Mechanical Life | Times | 20000 | ||||
| Rated Number of Short-Circuit Breaking Operations | Times | 100 | 50 | |||
| Operating Mechanism Rated Closing Voltage | V | AC/DC 110、220 | ||||
| Operating Mechanism Rated Opening Voltage | V | AC/DC 110、220 | ||||
| Contact Gap | mm | (9±1) | ||||
| Overtravel (Contact Spring Compression Length) | mm | 3.5±0.5 | ||||
| Three-Phase Closing Non-Simultaneity | ms | ≤2 | ||||
| Contact Closing Bounce Time | ms | ≤2 | ||||
| Average Opening Speed | m/s | 0.9~1.2 | ||||
| Average Closing Speed | m/s | 0.4~0.8 | ||||
| Opening Time | Under maximum operating voltage | ms | ≤50 | |||
| Under minimum operating voltage | ≤80 | |||||
| Closing Time | ms | ≤100 | ||||
| Main Circuit Resistance per Phase | μΩ | ≤50 | ||||
| Permissible Cumulative Wear Thickness of Moving and Fixed Contacts | mm | 3 | ||||
1.Integrated Design: It integrates the vacuum interrupter, main electrical circuit, and insulation support into a single encapsulated pole unit, simplifying the overall design.
2.Self-Circulating Ventilation Technology: The integrated encapsulated pole unit incorporates self-circulating ventilation technology to effectively manage heat dissipation issues associated with solid-insulated structures.
3.Long-Life Components: The long-life vacuum interrupter combined with epoxy resin encapsulation technology ensures the durability and reliability of the integrated encapsulated pole unit.
4.Compact Structure: The compact design optimizes space usage, making it suitable for various installation environments.
1.Fully Maintenance-Free Design: China's first circuit breaker to realize the maintenance-free concept; the permanent magnet mechanism and electronic control require no maintenance.
2.Ultra-High Mechanical Life: Mechanical life of 20,000 operations, more than double that of traditional spring mechanisms.
3.Intelligent Electronic Control: Uses photoelectric proximity switches instead of traditional auxiliary switches, achieving fully electronic power supply and intelligent control.
4.Compact and Energy-Saving Structure: Integrated pole unit design reduces volume by 40% compared to traditional products, saving installation space.
5.Excellent Heat Dissipation Performance: Incorporates self-circulating ventilation technology to effectively solve heat dissipation challenges in solid-insulated structures.
1.Uses fully automated vacuum casting production lines to ensure bubble-free and defect-free epoxy casting.
2.Permanent magnet mechanisms employ high-precision magnetization and magnetic circuit optimization technology to ensure consistent operation.
3.Photoelectric sensors use industrial-grade packaging technology, operating in temperatures from -40°C to +85°C.
4.Each product undergoes 200 mechanical characteristic tests and temperature rise tests before leaving the factory to ensure zero defects.
1.Permanent Magnet Bistable Mechanism: Uses neodymium iron boron permanent magnet materials to achieve bistable holding for closing and opening without mechanical latches.
2.Fully Electronic Control: Built-in 32-bit microprocessor supports CAN bus communication for intelligent protection and control.
3.Adaptive Heat Dissipation System: Automatically adjusts ventilation flow based on temperature rise to ensure optimal heat dissipation.
4.Wireless Condition Monitoring: Optional wireless temperature measurement and online mechanical characteristic monitoring modules.
5.Rapid Connection System: Uses plug-and-play electrical connections, reducing installation time by 70%.
We have established an intelligent logistics management system supporting real-time cargo tracking and temperature/humidity monitoring. Uses green packaging solutions with 100% recyclable packaging materials. Supports various international trade terms and provides one-stop customs declaration, clearance, and delivery services to ensure safe and timely cargo arrival.
Through ten-plus years of focused development, Jinhand ranks among China’s leading manufacturers and suppliers of electrical equipment. Our factory has adopted various advanced technologies and facilities, and we invite you to purchase our high-quality, cost-effective products manufactured in China.
Address
No. 188, Wei 15th Road, Yueqing City, Wenzhou City, Zhejiang Province, China
