CHINT CJ19-63-21-240V capacitor switching contactor with 240 V AC coil for reactive power compensation and power factor correction systems.
£140.62
The Chint CJ19-63-21-240V is a specialised power factor correction contactor designed for reliable switching and control of capacitor banks in industrial and commercial electrical systems. As part of the Chint CJ19 capacitor switching contactor series, it is engineered for AC-6b capacitor switching applications, providing dependable reactive power compensation control and improved electrical system performance.
Unlike standard contactors, the CJ19 series is designed specifically for capacitor switching duties and incorporates inrush current suppression technology to reduce electrical stress during capacitor energisation. This helps protect capacitor banks, minimise contact wear and improve the service life of reactive power compensation equipment. The series complies with IEC/EN 60947-4-1 standards.
With a rated operational current of 43 A, a 240 V AC coil supply and a three-pole configuration with 2 normally open and 1 normally closed auxiliary contacts, the Chint CJ19-63-21-240V is suitable for automatic capacitor banks, power factor correction panels and industrial low-voltage electrical distribution systems.
Power factor correction contactors such as the Chint CJ19-63-21-240V are designed to safely connect and disconnect capacitor banks used in reactive power compensation systems. Their dedicated capacitor switching construction helps control charging currents and reduces electrical stress during switching operations.
By improving reactive power management, capacitor switching systems can help optimise electrical network efficiency, improve power quality and support stable operation in industrial and commercial installations.
| Current | 43 A |
|---|---|
| Voltage | 240 V |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | CJ19 Capacitor Switching Contactors |
| Product type | Capacitor switching contactor |
| Frame size | 63 AF |
| Rated operational current | 43 A AC-6b |
| Rated thermal current | 63 A |
| Utilisation category | AC-6b |
| Rated operational voltage | Up to 690 V AC |
| Control coil voltage | 240 V AC 50/60 Hz |
| Pole configuration | 3-pole |
| Main contacts | 3NO |
| Auxiliary contacts | 2NO + 1NC |
| Controlled capacitor capacity | approx. 30 kvar at 400 V |
| Rated insulation voltage | 690 V |
| Impulse withstand voltage | 6 kV |
| Mounting type | 35 mm or 75 mm DIN rail / screw mounting |
| Protection rating | IP20 front protection |
| Operating temperature | -5 °C to +40 °C |
| Compliance standard | IEC/EN 60947-4-1 |
| Approximate dimensions | 150 × 79 × 155 mm |
The Chint CJ19-63-21-240V is a capacitor switching contactor used for controlling capacitor banks in power factor correction and reactive power compensation systems.
The CJ19-63-21-240V supports a 43 A rated operational current with a 63 A thermal current rating.
The contactor uses a 240 V AC 50/60 Hz coil.
The CJ19-63-21-240V includes 2 normally open and 1 normally closed auxiliary contacts for flexible control integration.
The CJ19-63-21-240V is typically installed inside power factor correction cabinets, electrical control panels and industrial distribution systems.
Chint CJ19 capacitor switching contactors are widely used in industrial and commercial power factor correction systems to provide reliable capacitor control, reduced switching stress and efficient reactive power management.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...