CJ19-63 Contactor Series
Chint CJ19-63 Capacitor Contactor, 63A, 3P, PFC Application
3-pole, 63A capacitor-duty contactor for low-voltage power factor correction systems. Designed for safe switching of shunt capacitors up to ~30 kVAr at 400 V with built-in surge suppression.Chint CJ19-63 is a capacitor-duty AC contactor designed for switching low-voltage shunt capacitors in power factor correction (PFC) systems. With a 63A rating, integrated surge suppression, and compliance with IEC/EN 60947-4-1, it ensures safe and reliable connection of capacitor banks for reactive power compensation.
Key Features
3-pole capacitor-duty contactor for low-voltage PFC applications
Conventional thermal current (Ith) of 63A for capacitor circuits
Controllable capacitor capacity typically ~15 kVAr at 230V and ~30 kVAr at 400V
Integrated surge suppressor to limit inrush current and over-voltage during capacitor switching
Rated operational voltage up to 690V AC, 50/60 Hz
Rated insulation voltage up to 690V (variant dependent)
Standard auxiliary contacts typically 2NO + 1NC for control and indication
Wide range of AC coil voltages: 110V, 220V, 230V, 240V, 380V, 415V (model dependent)
35 mm DIN rail or screw (panel) mounting for easy integration in APFC panels
Operating temperature range from -5°C to +40°C, suitable for industrial environments
Mechanical life up to 10 million operations (as per series information)
Conforms to IEC/EN 60947-4-1 and CE requirements
Technical Specifications
| Parameter | Value |
|---|---|
| Model | CJ19-63 |
| Brand | Chint |
| Product Type | Capacitor Duty Contactor |
| Electricity Type | AC (Alternating Current) |
| Number of Poles | 3 Poles (3P) |
| Main Contacts | 3 NO (capacitor switching) |
| Conventional Thermal Current (Ith) | 63 A |
| Rated Operating Voltage (Ue) | Up to 690 V AC |
| Rated Insulation Voltage (Ui) | Up to 690 V (some variants 500 V or 690 V) |
| Operating Frequency | 50 / 60 Hz |
| Controllable Capacitor @ 230V | ~15 kVAr (typical) |
| Controllable Capacitor @ 400V | ~30 kVAr (typical) |
| Auxiliary Contacts (typical) | 2 NO + 1 NC |
| Coil Voltage Options | 110V, 220V, 230V, 240V, 380V, 415V AC (variant-wise) |
| Surge Suppression | Built-in device to limit inrush and over-voltage |
| Standards Conformance | IEC/EN 60947-4-1, CE |
| Mounting | 35 mm DIN rail or screw mounting |
| Operating Temperature | -5℃ to +40 ℃ |
| Mechanical Durability | Up to 10,000,000 operations (series typical) |
| Electrical Durability | High endurance for capacitor duty switching |
| Applications | Low-voltage reactive power compensation, APFC panels |
| Approx. Dimensions (L × W × H) | ~11 × 10 × 15 cm (approx.) |
| Approx. Weight | ~1.0 kg (approx.) |
Applications
Automatic power factor correction (APFC) panels
Manual and step-based capacitor banks
LV reactive power compensation in industrial and commercial plants
PFC units in LT distribution boards and MCC rooms
Capacitor banks for HVAC, chillers and large motor installations
Any low-voltage system requiring controlled capacitor switching
What’s in the Box?
1 × Chint CJ19-63 Capacitor Duty Contactor (coil voltage and aux configuration as ordered)
Basic product labeling and terminal markings
Manufacturer’s packing and documentation (if supplied by OEM)
FAQ
Q1. What is the main use of the Chint CJ19-63 contactor?
A1. The CJ19-63 is designed specifically for switching shunt capacitors in low-voltage power factor correction (PFC) systems, not for conventional motor control.
Q2. What capacitor rating can CJ19-63 typically control?
A2. The CJ19-63 is typically used for ~15 kVAr at 230V and ~30 kVAr at 400V capacitor steps, subject to system conditions and capacitor manufacturer guidelines.
Q3. Why do I need a capacitor-duty contactor instead of a normal contactor?
A3. Capacitor switching generates very high inrush currents. Capacitor-duty contactors like CJ19-63 have built-in surge suppression to limit inrush and over-voltage, protecting both capacitors and the contactor.
Q4. Which coil voltages are available?
A4. CJ19-63 is available with various AC coil voltages such as 110V, 220V, 230V, 240V, 380V, and 415V AC. You must specify the required coil voltage while ordering.
Q5. How is CJ19-63 installed in a panel?
A5. It can be mounted on a 35 mm DIN rail or fixed using screws to the panel backplate, making it suitable for APFC panels and distribution boards.
Q6. What auxiliary contacts does it have?
A6. A typical CJ19-63 variant provides 2NO + 1NC auxiliary contacts, which can be used for status indication, interlocks, and APFC controller feedback.