
Siemens
- Available:
- 0 pcs.On RequestUpdated at: 05-09-2026
- Offer from:
Trusted supplier — Italy, member since 2021, 10–19 employees
- Warranty:
- 12 months
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This key-operated switch, designated as 3SU1, is designed for robust applications with a 22 mm diameter and constructed from metal with a polished finish. It operates through three switch positions: I, O, and II, with a latching mechanism to the left and a momentary contact type to the right. The actuating angle is defined at 2x45 degrees, specifically 10:30 h / 12 h / 13:30 h, allowing for precise operation.
The switch features a key removal position at O and I, enhancing security and control. With an operating temperature range from -25 to +70 °C and a storage temperature from -40 to +80 °C, it is suitable for diverse environmental conditions. The degree of protection is rated at IP66/IP67/IP69K, ensuring its reliability in harsh environments.
Additionally, the switch has a mechanical service life of approximately 300,000 cycles, making it ideal for frequent use. The installation dimensions include a mounting diameter of 22.3 mm and a mounting height of 61 mm. This device meets various safety and environmental standards, making it a dependable choice for industrial applications.

Siemens
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Datasheet for Siemens 3SU1050-5BN51-0AA0, including specifications and features.
3D CAD model and technical drawings, ready for your design software.

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