GCK Low-voltage withdrawable switchgear (hereinafter referred to as switchgear) for AC 50 (60) HZ, rated working voltage 660V and below the control and distribution systems. Two parts by a power distribution center (PC) cabinets and motor control center (MCC). As the power distribution and motor control lighting and other electrical distribution equipment. Switchgear comply with IEC60439-1 "Low-voltage switchgear and control equipment" GB7251.1-1997 "Low-voltage switchgear and control equipment", GB / T14048.1-93 "low-voltage switchgear and control equipment General" and other standards. And has a high breaking capacity, dynamic thermal stability, advanced and reasonable structure, flexible electric scheme, the number of circuit series resistance, versatility, any combination of the various program modules, a single cabinet to accommodate more, save area high degree of protection, safe, reliable, and easy maintenance. The products are widely used in power plants, substations, metallurgy, textile, petrochemical, industrial enterprises, high-rise buildings. Product Features: Compact, in a smaller space can accommodate more functional units, saving the user's investment. 1. Structure versatility. Cabinet with C profiles (E = 25mm) modular structure assembled from flexible assembly. 2. Various size withdrawable units can be any combination to meet system design requirements. 3. Vertical busbar and outgoing with good insulation protection, thus ensuring the maintenance of safe and reliable after cabinet. The unique design of the mechanical locking mechanism, with a clear run, test, out of position flag, safe and reliable operation. 5. drawer propulsion mechanism adopts rolling bearing drawer operational flexibility, the same size drawers interchangeable. 6. The combination of strong design can be freely combined drawer fixed segregated programs and programs to meet the needs of a variety of occasions. Technical Parameters: Item Parameters Unit No. 1 Rated operating voltage (Ue) V 400,690 2 Rated insulation voltage (Ui) V 690 3 Rated frequency Hz 50 (60) 4 horizontal bus maximum operating current A 4000 5 maximum vertical bus to work Current A 1500 6 horizontal busbar rated short-time withstand current rms (1S) / peak (KA) Icw KA 80/176 7 vertical busbar rated short-time withstand current rms (1S) / peak (KA) KA 60/130 8 horizontal busbar rated peak withstand current Icf KA to 220