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 |
| Number of Pole |
1, 3, 2 |
| Main Circuit Rating Voltage |
380V, 240v, 230v, 220v, 120v, 110v, 24v, 440v |
