# Siemens 3SU1050-4BP61-0AA0 RONIS Key-Operated Switch, 3-Position I\>O-II, 22mm

**URL:** https://aio.lv/en/product--siemens-3su1050-4bp61-0aa0--12445556
**Data updated:** 2026-05-22 12:32 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3SU1050-4BP61-0AA0
**EAN:** 4011209970922
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 21.07 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3su1050-4bp61-0aa0--12445556

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

The Siemens 3SU1050-4BP61-0AA0 is a robust 3-position key-operated switch featuring a RONIS lock mechanism. Designed for 22mm mounting holes, this switch provides reliable control for industrial automation and electrical systems with I\>O-II switching logic. It ensures secure operation and is built for durability in demanding environments, making it an essential component for control panels and machinery safety applications.

## Long description

The Siemens 3SU1050-4BP61-0AA0 is a high-quality, round key-operated switch designed for secure control in industrial environments. Featuring a robust metal construction with a shiny finish, this device is engineered for standard 22mm mounting holes. It utilizes a reliable RONIS lock mechanism, identified by lock number SB30, and comes equipped with two keys to ensure authorized access and operational safety. The switch supports a 3-position I\>O-II configuration, providing versatile control options for complex electrical systems and machinery.
Advantages
This key-operated switch offers exceptional durability and resistance to harsh industrial conditions due to its high-grade metal housing. The integration of the RONIS locking system provides a high level of security, preventing unauthorized personnel from operating critical machinery. Its standardized 22mm design ensures compatibility with most industrial control panels, facilitating quick and efficient installation. The clear I\>O-II switching logic allows for intuitive operation, while the included set of keys ensures that the system is ready for immediate deployment.
Suitable for
Industrial automation control panels
Machinery safety and access control
Electrical distribution systems
Equipment requiring restricted operational access
This switch may not be suitable for applications requiring non-locking operation or environments where the key must be removable in all three positions, as the locking logic is specific to the I\>O-II configuration. It is also not intended for outdoor use without appropriate protective enclosures to prevent environmental degradation.
Key specifications
Mounting diameter: 22 mm
Switch positions: 3 (I\>O-II)
Lock type: RONIS SB30
Material: Shiny metal
Included accessories: 2 keys
To install the switch, insert the unit into a standard 22mm hole on the control panel and secure it using the provided mounting hardware. Ensure the electrical contacts are wired according to the specific requirements of your control circuit. Once installed, the switch is operated by inserting the RONIS key and rotating it to the desired position to toggle the electrical state between the three available settings.
What to consider before purchase
Verify that the 22mm mounting hole size is compatible with your existing panel layout.
Confirm that the I\>O-II switching logic aligns with your specific control requirements.
Ensure that the SB30 lock type meets your facility's security and key management standards.
For optimal longevity and performance, ensure the key is fully inserted before turning and avoid using excessive force when switching between positions. Regularly inspect the lock mechanism for debris to maintain smooth operation.

## FAQ

### How much does the Siemens 3SU1050-4BP61-0AA0 RONIS Key-Operated Switch cost, and is it available for purchase?

The price is 25.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 17.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Siemens products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Siemens service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12445556/68804448_large.webp