Siemens 3KF4340-0MF11

The load break switch with fuse 400A, size 4, from Siemens is a highly advanced device designed for demanding applications in low-voltage circuits. With a rated current capacity of up to 400A and the ability to use NH fuses of sizes 1 and 2, this switch provides a reliable solution for the safe disconnection and protection of electrical systems. The switch can turn on and off a rated current between 32 and 800 A while ensuring a safety disconnection function. Its robust design ensures high short-circuit resistance, resulting in high availability of the systems. Additionally, the load break switch allows for easy mounting on a DIN rail and can be easily retrofitted with extensive accessories to integrate additional functions.

• Versatile use with door coupling or direct drive in five sizes
• Reliable protection against electrical accidents through locking functionality and touch protection
• Robust technology with high short-circuit resistance for high system availability
• Quick mounting on the DIN rail for sizes up to 80 A
• Efficient engineering with extensive CAx data.