The Siemens 3KF4340-2LF11 is a highly advanced load disconnect switch with fuse, designed for demanding applications in low-voltage circuits. With a rated current of 400 Amperes and a rated voltage of up to 690 Volts, this device provides a reliable solution for the safe disconnection and protection of electrical installations. The switch is designed in size 4 and features three poles suitable for NH fuses sizes 1 and 2. Its robust construction ensures high short-circuit resistance and contributes to the availability of the installations. The load disconnect switch can be used as a main switch, emergency stop, or repair switch, offering additional protection against electrical accidents through its locking functionality and touch protection. Installation is quick and straightforward on a DIN rail, facilitating its use in various applications.

• Versatile use with door coupling or direct drive in five sizes
• Easy retrofitting of functions through extensive accessories
• Reliable protection through locking functionality and automatically locked fuse cover
• Robust technology with high short-circuit resistance for high system availability
• Efficient engineering with extensive CAx data.