JCZ8C-7.2/12 series high voltage vacuum contactor-Chennuo Electric Technology Group Co., Ltd

Parameter

Tech. parameters	Unit	160、250/12(7.2)	400/12(7.2)	630/12(7.2)	800/12(7.2)	1250/12(7.2)
Rated voltage of the main circuit	(KV)	12(7.2)	12(7.2)	12(7.2)	12(7.2)	12(7.2)
Rated current of the main circuit	(A)	160	400	630	800	1000、1250
Main circuit making capacity	(A/100times)	2500	4000	6300	8000	10000
Main circuit switching capability	(A/25times)	2000	3200	5000	6000	8000
Ultimate breaking capacity	(A/3times)	4000	4500	6300	8000	10000
Mechanical life	(10,000 times)	100	100	100	100	100
Mechanical lock life	(10,000 times)	10	10	10	10	10
Electrical endurance AC3	(10,000 times)	25	25	25	25	25
Permanent magnet mechanism lifespan	(10,000 times)	20	20	20	20	20
Power frequency withstand voltage of main circuit (fracture)	(KV)	42(32)	42(32)	42(32)	42(32)	42(32)
Phase-phase/phase-to-ground power frequency withstand voltage	(KV)	42(32)	42(32)	42(32)	42(32)	42(32)
Lightning impulse withstand voltage level	(KV)	75(60)	75(60)	75(60)	75(60)	75(60)
Rated operating frequency	(times/h)	150	150	150	150	150
Operating Frequency of Permanent magnet mechanism	(times/h)	30	30	30	30	30
Terminal pressure	(N)	>100	>100	>100	>100	>100
Contact opening distance	(mm)	6(5)±0.5	6(5)±0.5	6(5)±0.5	6(5)±0.5	6(5)±0.5
Overtravel	(mm)	1.5±0.5	1.5±0.5	1.5±0.5	1.5±0.5	1.5±0.5
Main loop resistance	(μΩ)	≤200	≤200	≤200	≤150	≤150

Advantages and disadvantages of JCZ5 and JCZ8C vacuum contactors:

1. The JCZ8C operating mechanism is fully enclosed, while the JCZ5 operating mechanism is open.
The JCZ8C is less affected by the external environment and has a lower failure rate.

2. Mechanical characteristics: The JCZ8C has less bounce.
Structure: The JCZ5 has a compact structure, but its insulation performance is inferior to that of the JCZ8C.

3. The JCZ5 is smaller in size.

4. The JCZ8C is used more extensively than the JCZ5.

5. Application scope: The JCZ5 and JCZ8C are basically the same, but the JCZ8C performs better in switching capacitors.

Typical Application Scenarios:

High-Voltage Motor Control: Frequent starting, stopping, and reversing of large industrial AC motors, pumps, fans, and compressors.
Power Distribution & Transformation: Primary and secondary switching in industrial substations and transformer load control.
Capacitor Banks & Reactive Power Compensation: Reliable, surge-free switching of high-voltage capacitor banks to manage power factor correction.
Metallurgy, Mining & Cement Plants: Heavy-duty industrial applications operating in demanding environments characterized by frequent cycles and heavy electrical loads.

Why Choose Chennuo Electric?

Specialized Engineering Expertise: Backed by years of dedicated manufacturing experience in high and low-voltage power distribution equipment.
Strict International Compliance: Every JCZ8C contactor undergoes stringent factory testing—including power-frequency withstand voltage, lightning impulse tests, and contact resistance checks—meeting global IEC standards.
Flexible Customization: We support tailored control power supplies (AC/DC 110V, 220V, 380V, etc.) and customized terminal configurations to precisely match your switchgear design.
Reliable Export Standards: Secure, shock-absorbing export packaging paired with responsive technical support to ensure smooth international project execution.

Frequently Asked Questions (FAQ)

Q1: What voltage and current ratings are available in your high-voltage vacuum contactor series?
A: Our series covers comprehensive ratings up to 40.5kV (including popular 3.6kV, 7.2kV, 12kV, and 24kV variants) with various current capacities. Please refer to our individual product datasheets or contact us for precise specifications matching your system requirements.

Q2: Do these contactors support permanent magnetic operating mechanisms?
A: Yes, we offer options with both traditional high-reliability electromagnetic mechanisms and advanced permanent magnetic mechanisms, which feature fewer moving parts and enhanced trip-free stability.

Q3: How do you ensure safe international shipping for heavy electrical components?
A: All products are securely packed in moisture-proof, shock-absorbing export-grade wooden crates designed to withstand long-distance maritime and air transport, ensuring they arrive at your site in pristine condition.