63A 3-pole switch On and off switch for DIN rail mounting for controlling electrical systems. The 5TL1 on and 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 to disconnect or isolate 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 and off switch can be perfectly integrated into the range of residual current devices and circuit breakers. Siemens switching devices are characterized above all by: 1. Increased operational safety and system availability thanks to separate switching on and off of the affected circuit. 2. Reliable safety during installation thanks to the reach-around and touch protection included as standard. 3. Can be removed from the top hat rail or from the busbar assembly without tools thanks to the 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.