The Siemens 3SU1801-0AA00-0AC2 is a SIRIUS ACT padlock device designed for securing pushbuttons and selector switches to prevent unauthorized operation. It enables mechanical locking of actuators in either the OFF or selected switch position, offering an added layer of safety and control for maintenance, lockout/tagout procedures and machine isolation. As part of the SIRIUS ACT modular system, it installs easily onto compatible 22 mm actuators without rewiring.
Used in machine lockout/tagout procedures, maintenance lock, emergency stop protection, and prevention of unauthorized machine start. Suitable for industrial panels, automation equipment, switching stations and safety-controlled machinery environments.
| Colour housing cover | Yellow |
| Construction type housing | Surface mounted housing |
| Degree of protection (IP) | IP67/IP69K |
| Degree of protection (NEMA) | Other |
| Depth | 112.5 mm |
| Diameter openings | 22.3 mm |
| Height | 85 mm |
| Housing material | Plastic |
| Number of command positions | 1 |
| Width | 85 mm |
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