Description
CKJ5 Horizontal AC Vacuum Contactor Overview
The CKJ5 horizontal AC vacuum contactor is specified for AC 50 Hz main circuits at 380 V, 660 V, or 1,140 V. Published rated-current options are 250 A, 400 A, and 600 A, with separate AC 50 Hz control-circuit voltage options of 36 V, 127 V, 220 V, and 380 V.
Choose the main-circuit rating and control voltage together. The 600 A entry includes a voltage condition in the source data, so that configuration should be confirmed against the required system voltage before ordering.
Main-Circuit and Control Data
| Parameter | Published value |
|---|---|
| Rated operating frequency | 50 Hz |
| Rated operating voltage | 380 V / 660 V / 1,140 V AC |
| Rated operating current | 250 A / 400 A / 600 A (600 A voltage condition to be confirmed) |
| Conventional thermal current of the main circuit | 250 A / 400 A / 600 A |
| Control-circuit rated voltage | 36 V / 127 V / 220 V / 380 V AC, 50 Hz |
| Auxiliary contacts | 3 NO + 3 NC |
Switching Duty and Service Data
| Parameter | Published value |
|---|---|
| Rated operating frequency, AC-3 | 300 operations/hour |
| Rated operating frequency, AC-4 | 120 operations/hour |
| Main-circuit making and breaking capacity | Making: 10 Ie; breaking: 8 Ie |
| Limited breaking capacity | 4,500 A for 250 A and 400 A variants; 6,000 A for the 600 A variant |
| Electrical life, AC-3 | 60 × 104 operations |
| Mechanical life | 300 × 104 operations |
Selection Guidance
Match the contactor to the system voltage, continuous current, utilization category, switching frequency, control voltage, and required auxiliary-contact arrangement. Confirm the 600 A voltage condition and any short-time operating requirement before final selection.
Information for an Inquiry
Provide the required main-circuit voltage and current, AC-3 or AC-4 duty, expected operations per hour, control-circuit voltage, auxiliary-contact requirement, and installation arrangement so the CKJ5 configuration can be checked against the published data.
FAQ
Which main-circuit voltages are listed for the CKJ5 horizontal contactor?
Which rated-current options are available?
Which control-circuit voltages are listed?
What switching frequencies are specified?
What should be provided for CKJ5 selection?
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