The Siemens 3SU1000-4JC01-0AA0 is a SIRIUS ACT 22 mm key-operated switch head designed for panel mounting with two positions (O | I) and key-removal in position O. It features a plastic, round, 22 mm cut-out format, and is suitable for industrial control and operator interface applications requiring secure access and two-position switching.
Ideal for secure operator interface functions in control panels, machinery, safety cabinets and automation installations where key-controlled switching is required. Commonly used for start/stop functions, access control, machine enable/disable circuits and wherever key removal in the off position is necessary to prevent unauthorized activation.
| Colour control element | Yellow |
| Colour front ring | Black |
| Construction type lens | Rectangular |
| Degree of protection (IP), front side | IP67/IP69K |
| Height opening | 51.7 mm |
| Hole diameter | 22.3 mm |
| Material front ring | Plastic |
| Number of switch positions | 2 |
| Spring-return | Yes |
| Width opening | 29.5 mm |
| With front ring | Yes |
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