FN7-12负荷开关

High-voltage switch: fitting consist of load switch ａnd combination electric mainly by the box implement, isolating switch （the current limit of combination fuses in isolating switch）, vacuum switch tube, grounding switch, spring operation mechanism etc.
High-voltage switch is a kind of function between high voltage circuit breaker ａnd high pressure isolating switch between the electrical appliances, high-voltage switch fuse series ａnd the high pressure often used together; Used to control power transformer. High-voltage switch is of simple arcing device, it can be to break a certain load current ａnd load current. But it can＇t disconnect short-circuit current, so it is general ａnd high pressure fuse series use, with the fuse to short circuit protection.
Load switch type: name specifications

FN3系列
 FN3-12/400 FN3-12R/400 FN3-12RD/400
FN5系列
FN5-12/400 FN5-12R/400 FN5-12D/400 FN5-12RD/400 FN5-12RL/400 FN5-12DRL/400
FN7系列
 FN7-12/400 FN7-12R/400 FN7-12D/400 FN7-12RD/400 FN7-12RA/400 FN7-12DXLRA/400 FN7-12DXLRAF/400
FKN12系列
FKN12-12/630-20 FKN12-12R/630-20 FKN12-12D/630-20 FKN12-12RD/125-31.5
FZN25系列
FZN25-12/630-20 FZN25-12R/630-20 FZN25-12D/630-20 FZN25-12RD/125-31.5
FZN16系列
FZN16-12/630-20 FZN16-12R/630-20 FZN16-12D/630-20 FZN16-12RD/125-31.5
FZN21系列
FZN21-12/630-20 FZN21-12R/630-20 FZN21-12D/630-20 FZN21-12RD/125-31.5