NC9 series vacuum AC contactor is mainly used for AC 50Hz, rated working voltage up to 1140V, rated working current up to 1000A circuit, for remote connection and disconnection of circuits.
The NC9 series vacuum AC contactors are developed by Chint and are designed for 50 Hz AC circuits with rated voltages up to 1140 V and currents up to 1000 A. The document describes the product’s features, environmental limits, and compliance with standards GB 14048.4, IEC 60947‑4‑1 and JB/T 7122.
Key sections include model definitions, technical parameters, mechanical dimensions, installation guidelines, typical applications and ordering instructions. The manual provides detailed tables of current ratings, coil control voltages, and mechanical specifications to assist engineers and installers. This manual is written in Chinese.
| Rated Working Voltage (Ue) | 1140 V |
|---|---|
| Insulation Voltage (Ui) | 1140 V |
| Current Ratings | 160 A, 250 A, 400 A, 630 A, 800 A, 1000 A |
| Coil Control Voltage (Us) | 110 V / 220 V / 380 V AC 50 Hz |
| Operating Temperature Range | -5 °C to +40 °C (average ≤ +35 °C over 24 h) |
| Maximum Altitude | 2000 m |
| Installation Tilt Limit | ±15° |
The contactor is rated for a working voltage of 1140 V.
The series offers six current ratings: 160 A, 250 A, 400 A, 630 A, 800 A and 1000 A.
The coil can be powered at 110 V, 220 V or 380 V AC at 50 Hz.
Ambient temperature may range from –5 °C to +40 °C, with the average not exceeding +35 °C over a 24‑hour period.