Load break switch with fuse I=630A, U=690V, 3-pole basic version, without drive with shaft stub with Lyra contacts Protection against short circuits and overloads with the load break switch with fuses 3KL. Load break switches with fuses 3KL protect against overloads and short circuits as main and EMERGENCY STOP switches for switchgear, distributors, power supply and motor outputs. In conjunction with Siemens semiconductor fuses SITOR, they are also used in UPS systems, frequency converters and capacitor control systems. The Siemens load break switches with fuses 3KL are characterized above all by: 1. Possibility of locking and thus protection against unauthorized switching. 2. Simplified storage of accessories, as these can be used for other Siemens load break switches such as 3KA or 3KE. 3. Compliance with the provisions of IEC 60947-1, IEC 60947-3 and VDE 0660 Part 107. 4. Modular design. 5. Fast and easy installation. www.siemens.com/switchgear. Siemens offers a comprehensive portfolio of protection, switching, measuring and monitoring devices, distribution systems as well as switches and sockets for safe, efficient electrical infrastructure in buildings and industry.