The Kaichi Electric JCZ5(C)-12kV series AC high‑voltage vacuum contactor product leaflet provides features, technical parameters and installation details.
The JCZ5(C)-12kV series vacuum contactors are designed for 12 kV (or lower) AC systems with a frequency of 50‑60 Hz and a rated current up to 630 A. They are optimized for frequent make‑break operations, especially with capacitive loads such as transformers and capacitor banks, and offer a compact structure, good insulation and easy maintenance of the secondary circuit.
The leaflet lists the main construction elements, available operation mechanisms (electromagnetic, permanent‑magnet or electronic fast‑close), control voltage options, and detailed technical specifications including voltage, current, power, mechanical life and wiring diagrams. This manual is written in Chinese.
| Rated working voltage (Ur) | 12 kV |
|---|---|
| Rated working current (Ie) | 160 A, 250 A, 400 A, 630 A |
| Rated frequency (fr) | 50 Hz |
| Insulation level (Ud) | 42 kV (1 min power‑frequency withstand) |
| Electrical hold power | Start < 1000 W, Hold < 30 W |
| Mechanical hold power | Make < 1000 W, Break < 700 W |
| Mechanical life (make/break cycles) | 1 000 000 cycles |
| Electrical life | AC3 10 000 cycles |
The series is rated for a working voltage of 12 kV.
Control voltage options include 36 V (C), AC (A), 110 V/127 V (F), 135 V (H), DC (D), 220 V/240 V (M) and 380 V/400 V (P).
The mechanical hold is rated for up to 1 000 000 make/break cycles.
Both electromagnetic and permanent‑magnet mechanisms are standard, and a fast‑close electronic power module can be customized.