CH3-10Q/150 630~1250A Contact box of middle- mounted switchgear cabinet

CNKEEYA, CH3-10Q/150 630~1250A Contact box of middle- mounted switchgear cabinet，a reputable factory and trusted supplier, takes pride in presenting the CH3-10Q/150— a premium-grade contact box engineered exclusively for middle-mounted switchgear cabinets. As a core component crafted by CNKEEYA’s advanced manufacturing facility, this contact box (rated current 630~1250A, rated voltage 12kV) is meticulously produced with high-performance epoxy resin composite and precision-molded through cutting-edge intelligent production processes, delivering unparalleled insulation protection and uncompromising reliability in power transmission systems. Designed to fulfill the critical functions of electrical insulation, static-dynamic contact connection, and stable current conduction, the CH3-10Q/150 showcases CNKEEYA’s commitment to technical excellence—boasting a partial discharge level ≤3pC at 13.2kV, withstanding 42kV power frequency withstand voltage (1min) and 75kV lightning impulse voltage, and achieving IP67 protection grade to resist humidity, dust, and corrosive agents.

Technical specifications

CH3-10Q/150  Middle Set Cabinet Contact Box Series

General description

1.The contact box is formed by epoxy with APG technies,it is used for insulation isolation and connection transition of various switch cabinet.

2. Altitude:≤1000m

3. Ambient temperature:+40ºC~10ºC

4. The relative humidity shall not be more than 95% at+20ºC ambient temperature.

5. NO gas ,wapor or dust that may severely affect the insulation of contact box,no explosive or corrosive substance.

6. The coper contact to earth shall withstand power frequency test voltage(effective value )of 42kv for 5 minutes and lightning impulse vpltage (peak value)of 75KV.

7. The temperature of lead-out terminal shall not bemore than 65ºC if the contact box is used for long time in rated current condition.

8. See the attached figure for the outline and installation dimension of contact box.

scenes to be used

Transmission and distribution system

CNKEEYA’s insulating arc chamber is rated for 630A to 1250A applications, expertly manufactured from high-grade epoxy resin via the advanced APG molding process for superior insulation performance and exceptional mechanical strength. Engineered for seamless integration with standard metal-clad switchgear including the KYN28 series, it delivers reliable arc suppression and robust insulation protection for vacuum circuit breakers, ensuring stable and safe operation of electrical switchgear systems.