Wuxi Haibang Mechanical & Electrical Manufacturing Co.,Ltd
Wuxi Haibang Mechanical & Electrical Manufacturing Co.,Ltd
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1.14kV 250A Vacuum Contactor - low Voltage Vacuum Contactor, rated voltage 1140V, rated current 250A
General Description:
Hai Bang 1.14kV Vacuum Contactor – Type CKJ5-250A/1140V is applicable on AC 50-60Hz power systems, rated voltage 1140V, rated current 250A. This type of low voltage vacuum contactor is used to directly or remotely connect and disconnect the circuit and frequently control the AC motor, and is suitable for various protection devices (JDB electronic integrated protector, JR9 overcurrent protection device, resistance melting absorption device) to form an electromagnetic starter or explosion-proof magnetic starter. Haibang 1.14kV 250A Vacuum Contactor is widely used in metallurgy, underground coal mines, docks and other occasions. The altitude of the environment where the low voltage Vacuum Contactor is used does not exceed 2000 meters above sea level.
Please refer to the categories for other types of 1.14kV Vacuum Contactors with other values of rated current.
Technical Data:
| Name | Unit | Value | ||||
| Main circuit | Rated working voltage (Ue) | V | 1140 | |||
| Rated working current (Ie) | A | 250 | ||||
| Rated frequency (fr) | Hz | 50~60 | ||||
| Rated connecting capacity | A | 12Ie (AC-4) | ||||
| Rated breaking capacity | A | 10Ie (AC-4) | ||||
| Rated overload withstand current | A/s | 8Ie/10 | ||||
| Ultimate breaking capacity | kA | 3.2 | ||||
| Lightening impulse withstand voltage | kV | 8 | ||||
| Power frequency withstand voltage | Wiring terminal to earth | kV | 4 | |||
| Vacuum breaks | kV | 10 | ||||
| Control circuit | Rated voltage (Us) | V | 36/110/220/36 | |||
| Rated power (Ps) electric holding | VA | ≤400/40 (absorbing/holding) | ||||
| Auxiliary circuit | Form | (3a+3b) | ||||
| Rated value | AC 380V/5A | |||||
| Control circuit, auxiliary circuit to earth power frequency withstand voltage | kV | 2 | ||||
| Rated operating frequency | Long-term | time/h | 300(AC-3), 120(AC-4) | |||
| Short-term | time/h | 2000(within 20s) | ||||
| Mechanical endurance | 10000 times | 300 | ||||
| Electrical endurance | 10000 times | 20(AC-3) , 6(AC-4) | ||||
| Mechanical characteristics | Closing time | ms | ≤200 | |||
| 3-phase asynchronous time | ms | ≤3 | ||||
| Original opening time | ms | ≤150(electric holding) | ||||
| Closing tripping | ms | ≤10 | ||||
| Remark: 1. rated control voltage can be made according to customer’s requirements. | ||||||