JCZ5-7.2kV Series Indoor Medium Voltage AC Vacuum Contactor – 200A/400A/630A Three-Pole Magnetic Switch for Motor & Transformer Control
The JCZ5-7.2kV Series Vacuum Contactor is a high-reliability indoor switching component designed for three-phase AC 50Hz power systems with rated voltages up to 12kV (optimized for 7.2kV networks). Featuring an integrated high-quality insulation frame and advanced vacuum interrupters, this contactor is engineered for the frequent operation and remote control of high-voltage electrical equipment, including AC motors, power transformers, and capacitor banks. With an exceptional mechanical life of 1,000,000 operations and a simple, stable secondary control system, it offers a durable and low-maintenance solution for modern industrial power distribution.
JCZ5-7.2kV Indoor Medium Voltage AC Vacuum Contactor (200A / 400A / 630A)
Product Overview
The JCZ5-7.2kV Series is a robust indoor AC medium-voltage vacuum contactor designed for three-phase AC 50Hz power systems. Optimized for systems with rated voltages of 12kV and below (standardly used in 7.2kV networks), it is engineered for the frequent operation and remote control of high-voltage electrical equipment. This series features an integrated insulation frame structure and high-quality vacuum switch tubes, providing a stable and aesthetically refined solution for modern switchgear integration.
Core Features & Technical Advantages
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Exceptional Operational Life: Built for high-frequency industrial use with a mechanical life of up to 300,000 operations and an AC-3 electrical life of 250,000 operations.
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Integrated Insulation Design: Features an overall insulation frame and a transparent protective cover, ensuring high safety standards and minimal environmental impact on internal components.
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Precision Synchronism: Achieves superior three-phase break-brake synchronism of ≤ 2ms, ensuring balanced and safe switching for critical loads.
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Low Maintenance Requirements: The vacuum-sealed contacts prevent oxidation and corrosion, significantly extending maintenance cycles and reducing overall operating costs.
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Flexible Control Modes: Supports both mechanical keeping and electromagnetic keeping forms to meet diverse circuit protection and locking requirements.
Technical Specifications
| Item | Unit | JCZ5-7.2/200 | JCZ5-7.2/400 | JCZ5-7.2/630 |
| Rated Voltage | kV | 7.2 | 7.2 | 7.2 |
| Rated Current | A | 200 | 400 | 630 |
| Rated Max Breaking Current | A | 1600 | 3200 | 5040 |
| Rated Closing Current (eff.) | A | 2000 | 4000 | 6300 |
| Rated Operating Frequency | times/s | 300 | 300 | 300 |
| Closing Time | ms | ≤ 150 | ≤ 150 | ≤ 150 |
Standard Working Conditions
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Ambient Temperature: Reliable operation between -5°C and +40°C, with a 24-hour average limited below 35°C.
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Altitude: Optimized for indoor installations up to 1,000 meters above sea level.
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Humidity: Relative humidity should not exceed 50% when the ambient temperature is at its highest (+40°C).
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Pollution Degree: Classified as Class 3 for standard industrial environmental suitability.
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