# Siemens SIRIUS ACT 3SU1050-1HA20-0AA0 Emergency Stop Mushroom Pushbutton, Metal Front Ring, Pull-to-Release, Red

**URL:** https://aio.lv/en/product--siemens-3su1050-1ha20-0aa0--3535335
**Data updated:** 2026-05-18 02:45 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3SU1050-1HA20-0AA0
**EAN:** 4011209946705
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 16.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-3su1050-1ha20-0aa0--3535335

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

The Siemens SIRIUS ACT 3SU1050-1HA20-0AA0 is a high-quality emergency stop mushroom pushbutton designed for industrial safety applications. It features a durable metal front ring and a bright red actuator for high visibility. The device utilizes a pull-to-release mechanism to ensure secure operation. It is part of the SIRIUS ACT series, providing reliable performance and easy integration into control panels and automation systems.

## Long description

The Siemens SIRIUS ACT emergency stop mushroom pushbutton is a robust safety component engineered for critical industrial environments. Featuring a high-visibility red actuator and a durable metal front ring, this device is designed to provide immediate and reliable emergency shutdown capabilities in various automation systems. Its pull-to-release mechanism ensures that the system remains in a safe state until manually reset by an operator, preventing accidental restarts.
Advantages
This emergency stop button stands out due to its high-quality construction and industrial-grade durability. The metal front ring provides superior resistance to mechanical stress and environmental factors, ensuring long-term reliability in demanding settings. Its ergonomic design allows for intuitive operation, while the bright red color ensures it is easily identifiable during an emergency. The SIRIUS ACT series is known for its modularity and ease of installation, allowing for seamless integration into existing control panels and machine safety architectures.
Suitable for
Industrial machinery and production lines
Control panels and automation cabinets
Emergency shutdown systems in manufacturing facilities
Safety-critical human-machine interfaces
This device may not be suitable for applications requiring a key-operated reset or those where a twist-to-release mechanism is preferred by safety protocols. It is also not intended for use in environments where the specific mounting diameter or environmental protection rating does not align with the technical specifications of the SIRIUS ACT series.
Key specifications
Actuator type: Mushroom pushbutton
Color: Red
Front ring material: Metal
Reset method: Pull-to-release
Series: SIRIUS ACT
To use the device, mount it securely into a standard control panel cutout. Ensure that the contact blocks are properly attached to the back of the actuator. In an emergency, press the mushroom head firmly to trigger the stop function. To reset the system, pull the mushroom head outward until it clicks back into the operational position, allowing the machine to be restarted according to your safety procedures.
What to consider before purchase
Verify the mounting hole diameter matches your panel requirements
Ensure the pull-to-release mechanism complies with your facility's safety standards
Check compatibility with existing contact blocks and holders
Confirm the environmental protection rating is sufficient for your installation area
Usage recommendations
Regularly inspect the pushbutton for mechanical integrity and ensure the pull-to-release mechanism functions smoothly. Perform periodic testing of the emergency stop circuit to confirm that the machine halts correctly when the button is activated.

## FAQ

### How much does the Siemens SIRIUS ACT 3SU1050-1HA20-0AA0 Emergency Stop Button cost, and is it available for purchase?

The price is 20.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 6 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 20.07.2026 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/3535335/47508802_large.webp