3SU1050-4BF11-0AA0
RONIS key-operated switch, 22 mm, round, metal, shiny, lock number SB30, with 2 keys, 2 switch positions O-I, latching, actuating angle 90°, 10:30h/13:30h, key removal O+I, possible special locks: SB31, 421, 455
- Stock status:
- Call for availability
- Manufacturer:
- Siemens
- Product code:
- 3SU1050-4BF11-0AA0
Main documents
- Product datasheet
- Instruction sheet
- Catalogue
Related products
| Product | |
| Article Number | 3SU1050-4BF11-0AA0 |
| Product Description | RONIS key-operated switch, 22 mm, round, metal, shiny, lock number SB30, with 2 keys, 2 switch positions O-I, latching, actuating angle 90°, 10:30h/13:30h, key removal O+I, possible special locks: SB31, 421, 455 |
| Product family | Actuators and indicators, 22 mm, metal, shiny |
| Product Lifecycle (PLM) | PM300:Active Product |
| Price data | |
| Price Group | 41J |
| List Price | Show prices |
| Customer Price | Show prices |
| Surcharge for Raw Material | see also metal factor (further details are available on the help page) |
| Metal Factor | see also metal factor (further details are available on the help page) |
| Additional Product Information | ||
| EAN | 4011209970809 | |
| UPC | Not available | |
| Commodity Code | 85389099 | |
| LKZ_FDB/ CatalogID | CC-IC10 | |
| Product Group | 5452 | |
| Group Code | R711 | |
| Country of origin | Czech Republic | |
| Compliance with the substance restrictions according to RoHS directive | Since: 01.10.2014 | |
| Product class | A: Standard product which is a stock item could be returned within the returns guidelines/period. | |
| WEEE (2012/19/EU) Take-Back Obligation | Yes | |
| REACH Art. 33 Duty to inform according to the current list of candidates | ||
| SCIP number | Not available | |
Product Description
Siemens
Siemens, a global leader in the electrical and industrial automation sectors, is renowned for its high-quality products and solutions, ranging from electrical equipment and automation systems to energy management and telecommunications technologies.
With a strong focus on innovation, Siemens provides cutting-edge solutions that enhance operational efficiency, sustainability, and productivity across various industries. From advanced circuit breakers and switchgear to smart grid solutions, Siemens continues to shape the future of technology, delivering reliable and energy-efficient products that meet the evolving needs of businesses and industries worldwide.
Siemens push buttons
Siemens push buttons are engineered for maximum reliability and ease of use, making them a trusted choice for industrial and commercial applications. These buttons are crafted with high-quality materials to ensure durability in harsh environments, delivering consistent performance over time.
Available in various designs, Siemens push buttons cater to different operational needs, including start/stop functions, control commands, and emergency stops. Whether you’re upgrading control panels or building new machinery, Siemens push buttons offer seamless integration and enhanced user safety.

SIRIUS ACT
SIRIUS ACT offers a premium range of push buttons, indicator lights, and switches, designed for powerful machines and industrial applications. With an elegant and robust design, these components combine style, intelligence, and durability to provide top-tier performance. Built from high-grade metals and plastics, they ensure long-lasting reliability and are engineered with modern communication capabilities for seamless integration.
3SU1050-4BF11-0AA0
The Siemens 3SU1050-4BF11-0AA0 is a robust and secure RONIS key-operated switch, designed for industrial applications requiring precise control and enhanced security. Its compact and durable design ensures reliable operation in various environments.

Key Features and Specification
- Type: Key-operated switch.
- Panel Cutout Size: 22 mm.
- Shape: Round.
- Material: Metal with a shiny finish.
Lock Details:
- Lock Number: SB30.
- Key Removal Positions: “O” and “I”.
- Included Keys: 2 keys.
- Optional Locks: SB31, 421, 455.
- Switching Positions: 2 positions (“O-I”).
- Operation Type: Latching mechanism.
- Actuating Angle: 90°.
- Position Orientation: 10:30h/13:30h.
- Lifecycle Status: PM300 (Active Product)
Applications:
Industrial Control Systems:
- Ideal for secure control of critical machine functions.
Automation Systems:
- Used for precise and controlled input in automated processes.
Safety Systems:
- Ensures safe operation by restricting access to authorized personnel only.
Product Details:
- Product Family: Actuators and indicators, 22 mm, metal, shiny.
- Lifecycle Status: PM300 – Active Product.
- EAN: 4011209970809.
- UPC: Not available.
- Commodity Code: 85389099.
- Catalog ID: CC-IC10.
- Product Group: 5452.
- Group Code: R711.
Summary:
The Siemens 3SU1050-4BF11-0AA0 RONIS Key-Operated Switch combines security, durability, and precision. With its latching mechanism, 2-position functionality (O-I), and customizable lock options, it provides a dependable solution for industrial and automation applications requiring controlled and secure access.
Frequently Asked Questions
What is a Push Button Switch?
✅ A push button switch is an electromechanical device used to activate or deactivate an electrical circuit by manually pressing a button. These switches are available in various designs, sizes, and configurations, making them suitable for industrial automation, machinery, and control panels. Common applications include emergency stop buttons, control systems, and user interfaces.
How Does a Push Button Switch Work?
✅ push button switch A operates by applying pressure to the button or actuator, which compresses an internal spring and moves the electrical contacts. This action either closes or opens the circuit, depending on whether the switch is normally open (NO) or normally closed (NC). Push button switches are commonly used in industrial control systems, machinery, and automation applications for precise circuit activation.
What is the difference between a tactile pushbutton and a detection pushbutton?
✅ Tactile pushbuttons provide physical feedback and are designed for user interaction, often with a click sound. Detection pushbuttons sense positions (e.g., open/closed) without requiring user actuation.
What are the benefits of Siemens pushbuttons?
✅ Siemens pushbuttons offer IP69K durability, global certifications, modern design, intuitive operation, quick installation, and compatibility with AS-i, IO-Link, and PROFINET for advanced communication.
- Durability: IP69K rating ensures high resistance to extreme conditions, including exposure to oils, vapors, and corrosive solutions.
- Certifications: Fully certified for both national and international standards, ensuring reliable compliance with industry regulations.
- Design Flexibility: Available in metal and plastic variants, offering modern aesthetics to suit various applications and environments.
- Ease of Use: Features intuitive haptic feedback and illuminated controls for a seamless and user-friendly operation.
- Quick Installation: Effortless one-handed setup with innovative patented holder designs for faster deployment.
- Advanced Communication: Fully compatible with AS-i, IO-Link, PROFINET, and PROFIsafe technologies for enhanced communication and integration.
- Safety Assurance: ATEX-certified options are available for hazardous environments, ensuring maximum safety in challenging conditions.
Why choose Siemens SIRIUS ACT?
✅ Siemens SIRIUS ACT offers reliable, durable, and intelligent components, combining advanced technology with sleek design for powerful machines and advanced plants.



















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