:: Wenzhou XinMao Power Electric Co. Ltd. ::

Summary
    FN7-12DR is used in three-phase AC power network of AC 50Hz, rated voltage 12KV for breaking load current and controlling short-circuit current.
    FN7(C)-12 type H.V load switch and fuse box is basied on the FN7-12 series H.V load switch. with operating mechanism. make the installation more simpler. can meet orders needs.

Normal service condition
1. The ambient air temperature: MAX.: +40℃. Min.: -10℃.
2. The altitude does not exceed 1000m.
3. The relatire humidity of air. daily average ≤90%. monthly average ≤ 95%.
4. The ambient air should not be obviously polluted by corrosivity or the flammability gas    and steam. etc.
5. The working situation without frequent violent.

Specified parameter

Rated voltage	绝缘水平		Rated current	4S heatstabling current	Machine stabling current [peak]	Short-circuit controlling current
	1min power frequency withstand voltage	Lighting impuslse resisting voltage [peak]
12	42	48	400	12.5	31.5	31.5
	48	85	630	20	50	50

Specification

Classification Types DS DX L R RA F

Earth switch at the wire - in end Earth switch at the wire - out end Interlock device Fuse box Striking fuse box Off device by motor

Without tripper FN7-12 - - - - - -

FN7-12DSL △ - △ - - -

FN7-12DXL - △ △ - - -

FN7-12R - - - △ - -

FN7-12DSLR △ - △ △ - -

FN7-12DXLR - △ △ △ - -

With striking tripper FN7-12RAF - - - - △ △

FN7-12DSLRAF △ - △ - △ △

FN7-12DXLRAF - △ △ - △ △