The CJ20 series AC contactor is mainly used for AC 50Hz (or 60Hz), rated voltage up to 660V (1140V), rated current up to 630A in power lines, for remote connection and disconnection of circuits and frequent starting and control of three-phase AC motors.
This manual describes the normal operating and installation conditions for the CJ20 series AC contactors, including limits on ambient temperature, humidity, altitude, and installation tilt. It also outlines the required installation categories and protection against shock and vibration.
Technical data such as rated voltage, current, frequency, and detailed dimensions for each model (e.g., CJ20‑10, CJ20‑16, CJ20‑250) are presented in tables, along with ordering information and maintenance procedures for reliable long‑term operation. This manual is written in Chinese.
| Rated Voltage | up to 660 V (1140 V for special versions) |
|---|---|
| Rated Current | up to 630 A |
| Frequency | 50 Hz or 60 Hz |
| Ambient Temperature Range | -5 °C to +40 °C |
| Maximum Altitude | 2 000 m |
| Maximum Relative Humidity at 40 °C | 50 % |
The ambient temperature must not exceed +40 °C.
Installation altitude must not exceed 2 000 m.
The coil’s rated working voltage and frequency must be verified to match the power source.
The coil should be energized several times without load to verify reliable operation before commissioning.