... for breaking load current and controlling short-circuit current.FN7(C)-12 type H.V. load switch and fuse box is ... demands,service condition1. The ambient air temperature: MAX.: +40°C, Min.: -10°C.2. The altitude does not exceed 1000m.3. The ... switch at thewire-out endInterlockdeviceFuseboxStrikingfuse boxOff device bymotor Without tripperFN7-12------FN7-12DSLYES-YES---FN7-12DXL-YESYES---FN7-12R---YES-- ...