JCZ1-12 High Voltage Vacuum Contactor | Reliable Power Switching | Chennuo Electric-Chennuo Electric Technology Group Co., Ltd

JCZ1 12kV Single-Pole High-Voltage Vacuum Contactor (Solid-Sealed Type)

This series of medium-voltage vacuum contactors uses high-quality vacuum interrupters, combined with a metal frame and insulating supports, providing excellent breaking performance. They are suitable for single-phase or two-phase power network systems below 6KV(7.2KV) and 10KV(12KV), allowing for long-distance switching and interruption, frequent starts, and control of resistive, inductive, and capacitive loads. The JCZ1 series single-pole medium-voltage vacuum contactor is commonly used in power protection applications such as signal source arc suppression, harmonic neutral grounding, and load boxes. As a main switch, it features a compact size, fast making and breaking speeds, and strong interruption capacity.

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Parameter

Tech. Parameters	Model	160/12	250/12	400/12	630/12	800/12
Rated voltage of Main Loop	(KV)	12	12	12	12	12
Rated current of Main Loop	(A)	160	250	400	630	800
Main loop making capacity	(A/100times)	1600	2500	4000	6300	8000
Main loop switching capability	(A/25times)	1280	2000	3200	5000	6000
Ultimate breaking capacity	(A/3times)	3200	4000	4500	6300	8000
Mechanical life	(10,000 times)	100	100	100	100	100
Electrical endurance AC3	(10,000 times)	25	25	25	25	25
Electrical endurance AC4	(10,000 times)	10	10	10	10	10
Power frequency withstand voltage of main loop (fracture)	(KV)	42	42	42	42	42
Power frequency withstand voltage of controlling current	(KV)	2	2	2	2	2
Rated operating frequency	(Times/h)	300	300	300	300	300
Clearance between open contacts	(mm)	6±0.5	6±0.5	6±0.5	6±0.5	6±0.5
Overtravel	(mm)	1.5±0.5	1.5±0.5	1.5±0.5	1.5±0.5	1.5±0.5
Secondary control voltage	(V)	AC or DC:110/220/380 or customized

Typical Application Scenarios：

Arc Suppression & Neutral Grounding: Deployed in harmonic neutral grounding systems and signal source arc suppression setups.
High-Voltage Motor & Transformer Control: Frequent switching and starting of single-phase or multi-phase high-voltage loads in industrial plants.
Capacitor Banks & Reactive Power Compensation: Reliable switching of capacitive loads without severe re-ignition surges.
Specialized Industrial Testing & Load Boxes: Serving as a primary high-voltage switching element in custom test benches and load banks.

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 JCZ1 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 is the main difference between a single-pole (JCZ1) and a three-phase vacuum contactor (such as JCZ5)?
A: While three-phase contactors are designed for standard three-phase balanced loads, the JCZ1 features a single-pole (single-phase) configuration. This makes it uniquely suited for single-phase high-voltage systems, neutral grounding protection, harmonic suppression, or modular multi-unit custom switchgear arrangements.

Q2: What are the standard control voltage options available for the JCZ1 series?
A: The standard control power supply voltages include AC or DC 110V, 220V, and 380V. We also accommodate customized control voltage requirements based on your specific secondary control circuit design.

Q3: Can the JCZ1 contactor handle frequent switching operations?
A: Yes. The JCZ1 series is explicitly designed for frequent operations, featuring a rated operating frequency of up to 300 times/hour with high mechanical and electrical lifespans.

Q4: How should I maintain or inspect the JCZ1 vacuum contactor during routine operations?
A: We recommend establishing a periodic inspection system to check fastener tightness, verify auxiliary switch performance, and test the insulation and contact resistance of the vacuum interrupter tube to ensure long-term reliable operation.