Siemens 3KF4340-0LF11

The Siemens 3KF4340-0LF11 is a highly advanced load disconnect switch designed for demanding electrical installations. With a rated current of 400A and a size of 4, this 3-pole switch is specifically suitable for use with NH fuses sizes 1 and 2. It can be used as a main switch, emergency stop switch, or maintenance switch, providing a reliable safety disconnect function in low-voltage circuits. The robust construction ensures high short-circuit resistance, which increases the availability of the systems. The switch is optimized for easy mounting on a DIN rail and allows for quick retrofitting of functions through extensive accessories. Additionally, it offers effective protection against electrical accidents, including a locking functionality and touch protection.

• Versatile use with door coupling or direct drive in five sizes
• Easy retrofitting of functions through extensive accessories
• Reliable protection against electrical accidents with locking functionality and touch protection
• Robust technology with high short-circuit resistance for high system availability
• Safe protection even for wind power plants up to 690 V + 10%.