The Chint NCK3 Definite Purpose Contactor is an industrial-grade AC contactor designed for motor control centers, industrial machinery, pumps, compressors, conveyors, and automation systems. With current ratings from 0.1A - 630A and 3P / 4P pole configuration.
| Model Series | NCK3 |
| Rated Current (AC3) | 0.1A - 630A |
| Pole Configuration | 3P / 4P |
| Coil Voltage | 220V/380V AC/DC |
| Utilization Category | AC-3 (Motor Control) / AC-1 (Resistive) |
| Standard | IEC 60947-4-1 |
Q: How do I select the right contactor size for my motor?
A: The contactor should be rated for at least the motor's full load current (FLC). For AC-3 duty, use the motor's rated current. For heavy start applications, consider the next size up.
Q: Do I need an overload relay with this contactor?
A: Yes, a contactor provides switching control but does NOT protect against motor overload. You need a thermal overload relay (such as Chint NR2/NXR series) mounted directly below the contactor.
Chint original NCK3 Contactor NCK3-20/2 NCK3-25/2 NCK3-30/2 NCK3-32/2 NCK3-40/2 NCK3-20 NCK3-40 Definite Purpose Contactor
1.1 Application: HVACR;
1.2 Utilization category: AC-1, AC-8a;
1.3 Rated insulation voltage: 630V;
1.4 Standard: UL508
| Weight | 2 kg |
|---|---|
| Dimensions | 25 × 25 × 25 cm |
| Poles |
1P, 2P, 3P |
| Rated Current (AC-3) |
20A, 25A, 30A, 32A, 40A, 50A, 60A, 75A, 90A |
| Coil Voltage |
AC 380V, AC 240v, AC 230v, AC 220v, AC 120v, AC 110v, AC 24v, AC 440v |
