JCZ1-24kV Vacuum Contactor | Reliable High Voltage Control | Chennuo Electric-Chennuo Electric Technology Group Co., Ltd

JCZ1-24KV series vacuum contactor Exterior drawing

JCZ1-20kV(24kV) single-pole high voltage Vacuum Contactor

The JCZ1 24kV high-voltage vacuum contactor in this series uses high-quality vacuum interrupters, combined with a metal frame and insulating brackets, providing excellent breaking performance. It is suitable for single-phase or two-phase power network systems below 20kV(24kV), allowing for long-distance connection and disconnection, frequent starting, and control of resistive, inductive, and capacitive loads. The JCZ1 series single-pole high-voltage vacuum contactor is commonly used in power protection applications such as arc suppression, neutral grounding, and load boxes. It serves as a main switch, featuring a compact design, fast make-and-break speed, and strong breaking capability, making it suitable for 20kV(24kV) power systems or 10kV(12kV) power systems at altitudes above 4000 meters.

Request For Quote Related Products

Parameter

Tech. parameters	Model	160、250/24	400/24	530/24	800/24	1000、1250/24
Rated voltage of main loop	(KV)	24	24	24	24	24
Rated current of main loop	(A)	160、250	400	630	800	1000、1250
Main loop making capacity	(A/100times)	2500	4000	6300	6000	8000
The main circuit is on/off	(A/25times)	2000	3200	5000	6000	8000
Suction limit breaking capacity	(A/3times)	4000	4500	6300	3000	10000
Mechanical life	(10,000times)	100	100	100	100	100
Ultimate breaking capacity	(10,000times)	10	10	10	10	10
Electrical endurance AC3	(10,000times)	25	25	25	25	25
Permanent magnet mechanism life	(10,000times)	10	10	10	10	10
Power frequency withstand voltage of main circuit (fracture)	(KV)	65	65	65	65	65
Phase-phase/phase-to-ground power frequency withstand voltage	(KV)	65	65	65	65	65
Lightning impulse withstand voltage level	(KV)	125	125	125	125	125
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
Clearance between open contacts	(mm)	10±1	10±1	10±1	10±1	10±1
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	≤200	≤200

Typical Application Scenarios:

Arc Suppression & Neutral Grounding: Critical deployment in 24kV harmonic neutral grounding systems, neutral resistor switching, and signal source arc suppression.
High-Voltage Motor & Transformer Control: Frequent switching and starting of specialized single-phase high-voltage loads in industrial plants.
Capacitor Banks & Reactive Power Compensation: Reliable, surge-free switching of capacitive loads in 24kV power factor correction setups.
Harsh Climatic Environments: Ideal for outdoor or semi-enclosed industrial sub-stations requiring higher insulation margins against altitude and pollution.

Why Choose Chennuo Electric?

Specialized Engineering Expertise: Backed by years of industry leadership in high and low-voltage power distribution equipment, components, and custom solutions.
Rigorous Quality Assurance: Every 24kV contactor undergoes stringent factory testing—including high-voltage power-frequency withstand tests, lightning impulse voltage tests, and mechanical endurance checks—meeting international IEC standards.
Customization Flexibility: We offer tailored control voltage solutions (AC/DC secondary options) and specific terminal dimensions to precisely match your 24kV switchgear cabinet designs.
Reliable Global Export Standards: Secure, shock-absorbing export packaging coupled with responsive technical support to safeguard your international project schedules.

Frequently Asked Questions (FAQ)

Q1: What makes the 24kV version different from standard 12kV single-phase vacuum contactors?
A: The 24kV version features upgraded insulation materials, larger creepage distances, and specialized dielectric geometry specifically engineered to withstand the higher voltage stresses and insulation requirements of 24kV power distribution networks.

Q2: What are the primary application areas for a single-pole 24kV contactor?
A: Unlike three-phase contactors, single-pole 24kV units are primarily used in specialized applications such as 24kV neutral grounding systems, arc suppression coil switching, single-phase heavy motor control, or custom modular switchgear configurations.

Q3: Can the JCZ1 24kV contactor handle frequent switching operations?
A: Yes. Like the rest of the JCZ1 series, it is explicitly designed for high-frequency switching duties, offering an extended mechanical and electrical lifespan suited for industrial automation.

Q4: What control coil voltage options are available for this series?
A: We provide flexible control power supply configurations including standard AC/DC variants (e.g., 110V, 220V, 380V). Custom secondary control voltages can also be accommodated based on your specific project schematics.