Chint NC8-400 Contactor Series
Chint NC8-400 3P Power Contactor, 400A, AC/DC Coil
Industrial 3-pole 400A power contactor for heavy-duty motor control and remote switching up to 690V AC. Supports AC/DC coils and modular accessories for demanding industrial panels.
The Chint NC8-400 is a 3-pole, 400A industrial power contactor designed for heavy-duty motor control and remote switching of power circuits. With AC/DC coil options, modular accessories, and compliance with IEC/EN 60947-4-1, it is suitable for high-current applications in MCCs, power distribution panels, and process plants.
Key Features
3-pole (3P) power contactor with 400A current rating
Rated operational voltage up to 690V AC (NC8 series up to 1000A)
AC/DC operational coils for flexible control supply design
3 NO main contacts for power circuit switching
Auxiliary contact blocks (e.g., 2NO+2NC depending on configuration) for control and indication
Designed to pair with thermal overload relays to form electromagnetic starters
Suitable for frequent switching of AC motors and heavy-duty electrical loads
Modular construction supports auxiliary contacts, delay modules and surge suppressors
Complies with IEC/EN 60947-4-1 for low-voltage switchgear and control gear
Robust mechanical design suited for harsh industrial environments
Technical Specifications
| Parameter | Value |
|---|---|
| Model | NC8-400 |
| Brand | Chint |
| Product Type | Power Contactor |
| Current Rating | 400 A |
| Number of Poles | 3 Poles (3P) |
| Main Contact Configuration | 3 NO |
| Rated Operational Voltage (Ue) | Up to 690 V AC (NC8 series up to A) |
| Coil Type | AC/DC operational |
| Typical Coil Voltage Options | 110–127V AC, 380–415V AC (other options on request) |
| Auxiliary Contacts | Additional auxiliary contacts, e.g. up to 2NO+2NC |
| Application | Motor control, industrial panels, power systems, remote switching |
| Standards Compliance | IEC/EN 60947-4-1 |
| Construction | Modular, supports add-on modules (aux contacts, delay, surge) |
| Intended Combination | With thermal overload relays for motor starters |
| Approx. Dimensions (L × W × H) | ~40 × 30 × 35 cm (approx.) |
| Approx. Weight | ~20 kg (approx.) |
Applications
Motor control centres (MCCs) for large motors
Power distribution and feeder panels
Heavy-duty industrial machinery control
Pumps, compressors and fan control in utilities and process plants
Remote switching of high-current AC circuits
Integration into electromagnetic motor starters with overload relays
What’s in the Box?
1 × Chint NC8-400 3P Power Contactor, 400A (coil voltage as ordered)
Auxiliary contact block (as per supplied configuration, if included)
Manufacturer labels and basic documentation (if provided by OEM)
Product packed in protective industrial packaging
FAQ
Q1. What is the current rating of the Chint NC8-400 contactor?
A1. The NC8-400 is rated for 400A in a three-pole configuration and is suitable for heavy-duty motor and power circuit switching.
Q2. Which coil voltages are available?
A2. The NC8-400 supports AC and DC operational coils, with common options like 110–127V AC and 380–415V AC. Other coil voltages may be available on request and are supplied as specific variants.
Q3. Can this contactor be used for motor starters?
A3. Yes. It is designed to be used with appropriate thermal overload relays to form electromagnetic motor starters for high-current motors.
Q4. How many poles and main contacts does it have?
A4. The NC8-400 is a 3-pole contactor with 3 NO main contacts, suited for three-phase power circuits.
Q5. Does it support auxiliary contacts and accessories?
A5. Yes. The NC8 series supports modular auxiliary contact blocks (e.g., NO/NC combinations), delay modules, and surge suppressors, enabling expanded control and signaling.
Q6. Which standards does it comply with?
A6. The NC8-400 conforms to IEC/EN 60947-4-1, covering low-voltage contactors and motor starters.