100A 4-pole on/off switch for DIN rail mounting for controlling electrical systems. The 5TL1 on/off switches are used to switch lighting, motors and other electrical devices. The rated currents range from 32 A to 125 A. The 5TL1 device variants can also be used as load disconnectors in accordance with EN 60947-1. The devices may be used as main switches for isolating or disconnecting systems in accordance with EN 60204-1. Whether infrastructure or industrial requirements - Siemens offers switching devices for all applications and every area of use. The new design means that the 5TL1 on/off switch can be perfectly integrated into the range of residual current circuit breakers and miniature circuit breakers. Siemens switching devices are characterized above all by: 1.Increased operational reliability and system availability thanks to separate switching on and off of the affected circuit. 2. Reliable safety during installation thanks to the standard anti-reach and touch protection. 3. Tool-free removal from the top hat rail or from the busbar assembly thanks to convenient manual slider operation. 4. Clearly visible switch position indicator. 5. Can be used as a load disconnector and main switch. 6. The on and off switches comply with the provisions of EN 60947-1 and EN 60204-1. 7. Optimum technology for your safety - only from Siemens.