The CKJ5-125 Low Pressure AC Vacuum Contactor is a high-performance vacuum contactor engineered for long-distance switching and control of AC motors and circuits in power systems. With a rated Voltage guide of up to 1140V and a current capacity of 125A, this AC vacuum contactor excels in environments requiring frequent operations, such as industrial plants, mining, metallurgy, petrochemical facilities, power generation, and transportation networks.
Designed for durability and efficiency, the CKJ5-125 vacuum contactor is perfect for high-voltage solutions motor control, circuit protection, and managing power equipment in demanding applications, including explosion-proof settings when paired with electromagnetic starters.
Key Features of the CKJ5-125 AC Vacuum Contactor
- Vacuum Arc Extinction: Reduces arc energy, minimizing wear and extending the lifespan of this AC vacuum contactor.
- Compact & Robust Design: Built to withstand tough conditions while saving space.
- High Electrical Endurance: Rated for over 60,000 electrical operations.
- Versatile Applications: Ideal for mining, metallurgy, petrochemicals, and power systems.
- Advanced Protection: Pair with thermal relays for thermal and electromagnetic safety.
Parameters & Technical Specifications
| Product Model | Rated Voltage (V) | Rated Current (A) | Main Contact Parameter | Power Frequency Voltage Resistance (Effective Value) | Opening Distance (mm) | Over Travel (mm) | Final Pressure (N) | Main Circuit | Control Circuit | Auxiliary Circuit |
|---|---|---|---|---|---|---|---|---|---|---|
| CKJ5-80 | 1140 | 36/110/220/380 | 80 | 1.8 ± 0.2 | 30 ± 3 | 1 ± 0.2 | 4200 | 2500 | 2000 | 2000 |
| CKJ5-125 | 1140 | 36/110/220/380 | 125 | 1.8 ± 0.2 | 30 ± 3 | 1 ± 0.2 | 4200 | 2500 | 2000 | 2000 |
| CKJ5-250 | 1140 | 36/110/220/380 | 250 | 2 ± 0.2 | 78 ± 7.8 | 1 ± 0.2 | 4200 | 2500 | 2000 | 2000 |
| CKJ5-400 | 1140 | 36/110/220/380 | 400 | 2 ± 0.2 | 117.6 ± 11.8 | 1 ± 0.2 | 4200 | 2500 | 2000 | 2000 |
| CKJ5-600 | 1140 | 36/110/220/380 | 600 | 2 ± 0.2 | 196 ± 19.6 | 1 ± 0.2 | 4200 | 2500 | 2000 | 2000 |
Additional Technical Parameters
| Product Model | Making Capacity (AC-3) | Breaking Capacity (AC-4) | Limit Breaking Current (A) | Electric Lifetime | Mechanical Lifetime | Weight |
|---|---|---|---|---|---|---|
| CKJ5-80 | 10Ie, 100 Times | 8Ie, 25 Times | 2000, 3 Times | 60 × 10⁴ | 6 × 10⁴ | 4 KG |
| CKJ5-125 | 10Ie, 100 Times | 8Ie, 25 Times | 2000, 3 Times | 60 × 10⁴ | 6 × 10⁴ | 4 KG |
| CKJ5-250 | 10Ie, 100 Times | 8Ie, 25 Times | 4500, 3 Times | 60 × 10⁴ | 6 × 10⁴ | 8 KG |
| CKJ5-400 | 10Ie, 100 Times | 8Ie, 25 Times | 4500, 3 Times | 60 × 10⁴ | 2 × 10⁴ | 12 KG |
| CKJ5-600 | 10Ie, 100 Times | 8Ie, 25 Times | 6000, 3 Times | 60 × 10⁴ | 0.5 × 10⁴ | 20 KG |
Installation & Dimensions
The CKJ5-125 AC Vacuum Contactor is designed for seamless integration into power systems. Its compact size ensures flexibility in installation:
- Dimensions: 157mm x 134mm x 135mm
- Installation Size: 142mm x 118mm (4–7mm bolts)
This vacuum contactor is easy to install, maintain, and replace, making it a practical choice for various setups.
Typical Applications of the CKJ5-125 Vacuum Contactor
- AC Motor Control: Perfect for frequent motor startups and stops.
- Industrial Power Equipment: Controls transformers, generators, and more.
- Power Systems: Suited for medium- and low-voltage applications in energy, manufacturing, and processing industries.
- Explosion-Proof Settings: Reliable in hazardous environments with proper safety integration.
Why Choose the CKJ5-125 AC Vacuum Contactor?
- Superior Reliability: Vacuum arc extinction ensures long life and low maintenance for this AC vacuum contactor.
- Broad Industry Use: Trusted in mining, petrochemicals, metallurgy, and power systems.
- Heavy-Duty Durability: Over 60,000 electrical operations for demanding tasks.
- Space-Saving Design: Compact yet powerful, ideal for constrained installations.
- Safety in Harsh Environments: Explosion-proof compatibility when paired with relays.
Frequently Asked Questions (FAQ)
1. What sets AC Vacuum Contactors apart from air contactors?
AC vacuum contactors like the CKJ5-125 use vacuum arc extinction for superior durability and reduced maintenance compared to air contactors, which suffer from faster wear and shorter lifespans.
2. How do I install the CKJ5-125 Vacuum Contactor?
This vacuum contactor is simple to install using the provided dimensions (142mm x 118mm). Ensure a dust-free, moisture-free environment and secure main and auxiliary circuit connections.
3. Which industries benefit from the CKJ5-125 AC Vacuum Contactor?
Mining, petrochemical, metallurgy, energy, and transportation sectors rely on this AC vacuum contactor for its reliability and performance in high-voltage, frequent-switching tasks.