CJ19-150 Contactor Series

Chint CJ19-150 is a 3-pole capacitor-duty AC contactor designed for switching low-voltage shunt capacitors in power factor correction (PFC) systems. With rated operational current up to 115A (AC-6b at 400V), controllable capacity up to 120 kVAr at 660/690V and built-in inrush suppression, it is suitable for medium-to-large kVAr steps in automatic capacitor banks.

Key Features 

• 3-pole capacitor-duty contactor for low-voltage power factor correction

• Rated operational current (AC-6b) 115A at 400V

• Controllable capacitor capacity:

  • 46 kVAr at 220/230V

  • 80 kVAr at 380/400V

  • 120 kVAr at 660/690V

• Rated insulation voltage Ui up to 690V and operational voltage Ue up to 690V

• Integrated current-limiting resistance device for inrush current suppression

• Multiple AC coil voltage options: 110V, 220V, 240V, 380V (variant dependent)

• Auxiliary contacts available in combinations like 1NO+1NC or 3NO for control and indication

• Suitable for 50/60 Hz power systems

• Mechanical durability up to 1,000,000 operations, electrical durability up to 10,000 operations

• Screw or 35 mm DIN rail mounting for easy APFC panel integration

• Insulated terminal covers for operator safety

• Conforms to IEC 60947-4-1 and certified to CE, CCC standards

Technical Specifications 

Applications 

• Automatic power factor correction (APFC) panels with medium/large kVAr steps

• Fixed and switched capacitor banks in LV distribution systems

• Reactive power compensation in industrial plants and commercial buildings

• PFC units in MCCs, LT panels and utility boards

• Capacitor banks for large HVAC, chiller, compressor and motor loads

• Any low-voltage network requiring controlled switching of high kVAr shunt capacitors

What’s in the Box?

• 1 × Chint CJ19-150 Capacitor Duty Contactor (coil voltage and aux configuration as ordered)

• Product label with ratings and wiring identification

• Manufacturer’s basic instruction sheet / leaflet (if supplied by OEM)

FAQ 

Q1. What is the main application of the Chint CJ19-150 contactor?
A1. The CJ19-150 is used for switching shunt capacitors in low-voltage power factor correction systems and automatic capacitor banks. It is not a standard motor starter contactor.

Q2. What capacitor ratings can CJ19-150 typically handle?
A2. Typical controllable ratings are 46 kVAr at 220/230V, 80 kVAr at 380/400V and 120 kVAr at 660/690V, subject to system conditions, harmonics and capacitor manufacturer recommendations.

Q3. How does the inrush current suppression work?
A3. CJ19-150 has an internal current-limiting resistance device that makes contact milliseconds before the main contacts. This reduces inrush current when the capacitor is energised and limits over-voltage during disconnection.

Q4. Which coil voltages are available?
A4. The series is supplied with various AC coil voltages, commonly 110V, 220V, 240V and 380V AC. The required coil voltage must be specified when ordering.

Q5. What auxiliary contact options are available?
A5. Typical variants provide 1NO+1NC or 3NO auxiliary contacts. These are used for status indication, interlocking and feedback to APFC controllers or PLCs.

Q6. How is the CJ19-150 mounted?
A6. It can be screw-mounted on the panel backplate or installed on a 35 mm DIN rail, allowing flexible layout in APFC and PFC panels.