HXGN-12 type fixed metal-enclosed HV ring main unit is applicable foe power system that is available in AC 50 Hz, rated working voltage 12 KV, rated working current 630 A and below, it is used as an indoor distribution device of ring network and terminal power supply in the factory, workshop, residential area, tall building, school, park and so on. This product operates the load switch with the help of electromagnetic and electric spring mechanism, and the earth switch and isolating switch by means of manual operation mechanism.

Rated working voltage/ Max working voltage	10KV/12 KV	Ratedpeak withstand current of earth circuit	31.5 KA   50 KA
Rated frequency	50Hz	Rated active load breaking current	400A     630A
Rated working current of main bus-bar	400A 630A 1250A	Rated closed loop breaking current	400A     630A
Rated current (Functional unit)	400A 630A 1250A	Rated Short-circuit (peak value) of main circuit and earth circuit	31.5KA   50KA
Rated Short-circuit withstand current(Functional unit)	12.5 KA/ 4 s  20 KA/ 2 s	Outline size (W×D×H)	850×900×2000 mm
Rated Short-circuit withstand currentof earth circuit	12.5 KA/ 4 s  20 KA/ 2 s	Weight	200-300 KG
Rated peak withstand current	31.5 KA     50 KA