CH3-10Q/150 630-1250A Central Power Switch Contact Box

This epoxy resin contact box provides reliable insulation, mechanical strength, and stable current transmission for 10–12 kV switchgear applications.

 
 
 

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I. Product Overview

The CH3-10Q/150 630-1250A medium-voltage switchgear contact box adopts an epoxy resin APG pressure gel molding structure. It is a dedicated insulation connection device for medium-voltage switchgear and is mainly used in 10KV-12KV level handcart-type switchgear. It plays a role in insulation isolation and connection transition, and can provide effective insulation protection for the contacts inside the switchgear, ensuring the safe and stable operation of the power system.

II. Technical Parameters

Parametersindex
Rated voltage10KV-12KV
Rated current630A-1250A
Power frequency withstand voltage42KV/1min
Partial discharge index≤ 3 pC
Lightning impulse voltage75KV
glass transition temperature≥95℃
Installation center distance150mm
Temperature rise limitUnder rated current, the temperature rise at the outgoing terminal shall not exceed 65℃.
MaterialEpoxy resin housing + copper alloy contacts

III. Scope of Application

This contact box is suitable for 10KV-12KV level handcart-type medium-voltage switchgear and is commonly used in power distribution systems, industrial substations, high-rise building power distribution rooms, industrial and mining enterprise power distribution systems and other power facilities. It serves as an insulation protection and connection transition component for the internal contacts of the switchgear, providing reliable insulation protection for the switching and isolation of high-voltage circuits.

IV. Usage Conditions

1. The altitude at which the installation is performed must not exceed 1000 meters;

2. The ambient air temperature is -10℃ to +40℃, and the relative humidity at 25℃ does not exceed 95%.

3. The installation site should be free from gases, vapors, dust, and other explosive and corrosive media that could seriously affect the insulation performance of the contact box;

4. It should be installed in a place free from severe vibration and impact to ensure the structural stability of the product.

V. Product Characteristics

1. Excellent insulation performance : It is molded with epoxy resin APG process, which has good insulation performance, can effectively isolate high voltage circuits, prevent leakage and short circuit risks, and withstand high voltage impact;

2. Stable and durable structure : The one-piece molded structure has high mechanical strength and can withstand the mechanical and electrical stress inside the switch cabinet, resulting in a long service life;

3. Good temperature rise control : Under the long-term operation of rated current, the temperature rise at the output end does not exceed 65℃, which can effectively ensure the safe operation of the equipment and avoid failures caused by excessive temperature rise;

4. Easy installation : Standardized installation dimensions adapt to the installation requirements of conventional central control cabinets, facilitating on-site installation and replacement;

5. Corrosion and oxidation resistance : Epoxy resin material has good corrosion and oxidation resistance, and can adapt to a variety of complex electrical environments;

6. Excellent surface finish : The surface is smooth and burr-free, easy to install, and has good flame retardant and wear-resistant properties.

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CH3-10Q/150 630-1250A Central Power Switch Contact Box
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