CJ19-95 Contactor Series
Chint CJ19-95 Capacitor Contactor, 95A, 3P, PFC Application
3-pole, 95A capacitor-duty contactor for low-voltage power factor correction systems, designed for safe switching of shunt capacitors up to 50 kVAr at 400V with built-in surge suppression and long electrical life.Chint CJ19-95 is a capacitor-duty AC contactor designed for switching low-voltage shunt capacitors in power factor correction (PFC) systems. With a conventional thermal current of 95 A, controllable capacity up to 50 kVAr at 400 V, and integrated surge suppression, it ensures reliable and safe operation of capacitor banks in industrial and commercial installations.
Key Features
3-pole capacitor-duty contactor for low-voltage PFC applications
Conventional thermal current (Ith) of 95A
Rated operational current (AC-6b) approx. 72.2A at 400V
Controllable capacitor capacity: 22.5 kVAr at 230V and 50 kVAr at 400V
Built-in surge suppression to limit inrush current and over-voltage during switching
Rated insulation voltage Ui up to 690V
Rated operational voltage Up to 400V AC on main circuit
Wide range of AC coil voltages: 110V, 220V, 230V, 380V, 415V, 440V (variant dependent)
Auxiliary contacts in multiple combinations (e.g., 2NO+1NC or 1NO+2NC) for control and indication
Screw mounting or DIN rail (35 mm / 75 mm) installation for easy panel integration
Long mechanical life (approx. 10 million operations) and electrical life (approx. 1 million operations)
Conforms to IEC/EN 60947-4-1 for low-voltage switchgear and controlgear
Technical Specifications
| Parameter | Value |
|---|---|
| Model | CJ19-95 |
| Brand | Chint |
| Product Type | Capacitor Duty Contactor |
| Current Rating (Ith) | 95 A |
| Rated Operational Current (AC-6b, 400V) | ~72.2 A |
| Controllable Capacitor @ 230V | 22.5 kVAr |
| Controllable Capacitor @ 400V | 50 kVAr |
| Number of Poles | 3 Poles (3P) |
| Main Contact Configuration | 3 NO (capacitor switching) |
| Auxiliary Contacts (series options) | 2NO + 1NC or 1NO + 2NC (by sub-model) |
| Rated Insulation Voltage (Ui) | 690 V |
| Rated Operational Voltage (Ue) | Up to 400 V AC (main circuit) |
| Coil Voltage Options | 110V / 220V / 230V / 380V / 415V / 440V AC |
| Electricity Type | AC |
| Standards Compliance | IEC/EN 60947-4-1 |
| Surge Suppression | Built-in inrush limiting and over-voltage suppression |
| Mechanical Life | Approx. 10,000,000 operations |
| Electrical Life | Approx. 1,000,000 operations |
| Mounting | Screws or 35 mm / 75 mm DIN rail |
| Application | Power factor correction, shunt capacitor switching |
| Approx. Dimensions (L × W × H) | ~13 × 12 × 18 cm (approx.) |
| Approx. Weight | ~1.5 kg (approx.) |
Applications
Automatic power factor correction (APFC) panels
Fixed and stepped capacitor banks in LV distribution systems
Reactive power compensation in industrial plants and commercial buildings
PFC units in MCC rooms, LT panels and utility boards
Capacitor banks for HVAC, chillers, compressors and large motors
Any low-voltage system requiring controlled switching of shunt capacitors
What’s in the Box?
1 × Chint CJ19-95 Capacitor Duty Contactor (coil voltage and aux configuration as ordered)
Product label and terminal markings
Manufacturer’s basic documentation (if supplied with the product)
FAQ
Q1. What is the main application of the Chint CJ19-95 contactor?
A1. The CJ19-95 is designed for switching low-voltage shunt capacitors in power factor correction systems and is not meant for standard motor starter duty.
Q2. What capacitor ratings can the CJ19-95 handle?
A2. Typical ratings are 22.5 kVAr at 230V and 50 kVAr at 400V, making it suitable for higher kVAr steps in APFC panels, subject to system conditions and capacitor specifications.
Q3. Why is a capacitor-duty contactor required instead of a normal contactor?
A3. Capacitor switching causes very high inrush currents and transients. The CJ19-95 has built-in surge suppression (current-limiting components) to protect both capacitors and contactor contacts, extending service life.
Q4. Which coil voltages are available?
A4. The CJ19-95 is available with several AC coil voltages, including 110V, 220V, 230V, 380V, 415V, and 440V. You must specify the required coil voltage while ordering.
Q5. What auxiliary contact options are available?
A5. Typical variants include CJ19-95/21 (2NO+1NC) and CJ19-95/12 (1NO+2NC), allowing flexible indication, interlocking, and APFC controller feedback.
Q6. How is the CJ19-95 mounted in a panel?
A6. It can be mounted using screws on a backplate or on a 35 mm / 75 mm DIN rail, providing flexibility for panel layout and retrofits.