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3RH2911-1FB11
Siemens 3RH2911-1FB11 available at EU Automation. Get in touch today for a quick price.
Based on over 4900 reviews
Full 12-month warranty
Available for dispatch immediately
We deliver worldwide
What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
All orders are subject to product availability. See our T&Cs.
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What happens next?
1. Email confirmation
You will get an email confirming that we have received your enquiry.
2. Dedicated Account Manager
One of our team will be in touch to confirm your part(s) specification and condition.
3. Your quote
You will receive a comprehensive quote tailored to your specific needs.
The Siemens 3RH2911-1FB11 is a high-quality auxiliary switch block designed to enhance the functionality of contactor relays and power contactors. This component is part of the esteemed SIRIUS product line, renowned for its reliability and versatility in various industrial applications. The switch block features a front-mounted design, providing easy access and straightforward installation. Equipped with one normally open (NO) and one normally closed (NC) contact, the 3RH2911-1FB11 offers flexibility for controlling electrical circuits. The robust construction ensures a mechanical service life of typically 10 million switching cycles, making it a durable choice for repetitive operations. With an electrical endurance of 200,000 switching cycles at AC-15 at 230 V, this auxiliary switch block is built to last even in demanding conditions. The unit is rated for an insulation voltage of 690 V with a degree of pollution 3, and it can withstand impulse voltages up to 6 kV, ensuring it can handle surges and maintain circuit integrity. The switch block operates reliably within an ambient temperature range of -25 to +60 °C, making it suitable for a wide range of environments. With a protection class of IP20 on the front, the 3RH2911-1FB11 is designed to prevent the ingress of solid objects, adding an extra layer of protection for the internal components. The compact dimensions, featuring a width of 36 mm, a height of 37.5 mm, and a depth of 43.7 mm, allow for efficient use of space inside control cabinets. The screw-type terminals provide a secure and reliable electrical connection for auxiliary and control current circuits, accommodating various conductor cross-sections for flexible wiring options. This auxiliary switch block does not have mirror contact or positively driven operation according to IEC standards, which should be considered when integrating into safety-related applications. Overall, the Siemens 3RH2911-1FB11 auxiliary switch block is a dependable and practical solution for enhancing control systems, offering consistent performance and ease of use for engineers and technicians in the UK and beyond.
Typical applications
- Control and extension of contactor functionalities in industrial motor starters
- Implementation in control relay setups for automation systems
- Use in safety and interlock circuits to enhance machine safety
- Integration into control panels for machinery and process control
- Auxiliary switching for signalling and interlocking in electrical circuits
- Upgrading existing control systems with additional contact configurations
- Utilisation in HVAC systems for controlling various stages of operation
- Application in conveyor systems for start/stop and directional control tasks
- Inclusion in pump control circuits for automated water and fluid management
- Employed in lighting control systems for commercial and industrial buildings
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Contact usCan't find what you're looking for?
Find answers, guidance and resources to help you get the most out of our services.
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What our customers say
"Alex Bailey is my main point of contact at EU Automation...he is extremely friendly, has exceptional customer service skills and always offers great pricing & lead times."
"Tom Higgins provided great prompt service. I contacted Tom by phone and within 10 minutes there was a quote in my in box. WOW Thank you Tom and Thank you EU Automation!"
"Excellent service and communication from Alex Bailey. He truly goes above and beyond to ensure his clients are 100% satisfied. The entire process was seamless, and his attention to detail made a huge difference. Highly recommended for anyone looking for amazing service!"
"Tom Higgins did a great job at getting us the part we needed. He saw a concern with the part a verified before shipping. "
"Thomas Higgins has gone above and beyond to make things happen for my facility. His customer service and knowledge were an asset in helping me with my order and the logistics challenges! "
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Full 12-month warranty
ISO 9001:2015 certified
Swift global delivery
"The prompt delivery knowing it was urgent was amazing! We are confident when EU Automation says they will try to ship as soon as possible they really mean it. Our company will definitely use them again. Service is astounding."
Courtney Zeinert
Facilities Manager
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