"Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime"
Full 12-month warranty
Available for dispatch immediately
We deliver worldwide
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.
Ask our team
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 3RH1911-1GA04 is a high-quality auxiliary switch block designed for seamless integration with contactor relays. This component is engineered to provide reliable switching operations within industrial control systems. It features four normally closed (NC) contacts, conforming to the DIN EN50011 standard, ensuring compatibility with a wide range of applications. Constructed with durability in mind, the switch block boasts a mechanical service life of approximately 10 million switching cycles, making it a robust choice for demanding environments. The electrical endurance is equally impressive, with a typical rating of 200,000 cycles at AC-15, 230V. Safety is a priority with this auxiliary switch block, which comes with an IP20 protection class on the front, safeguarding against solid objects larger than 12.5mm. It is designed to withstand insulation voltages up to 690V and has a surge voltage resistance rated at 6kV, providing peace of mind in various operating conditions. The compact design features snap-on mounting for quick and easy installation, with dimensions of 36.5mm in width, 37.5mm in height, and 41.5mm in depth. The screw-type terminals offer a secure and reliable electrical connection for auxiliary and control current circuits, accommodating a range of conductor cross-sections. This auxiliary switch block is a testament to Siemens' commitment to quality and reliability, making it an essential component for enhancing the functionality and efficiency of your industrial control systems.
Our global network and dedicated team act fast to keep your supply chain moving.
Contact usFind answers, guidance and resources to help you get the most out of our services.
Support centreOur global network and dedicated team act fast to keep your supply chain moving.
Contact usFind answers, guidance and resources to help you get the most out of our services.
Support centreWhether you're maintaining existing equipment or sourcing parts for current systems, we provide fast, dependable supply you can rely on.
50+ account managers available now
"Got hold of Sime for a Carrier card for a chiller. Machine down in a factory. Received the new card in express time machine and plant now up and running fantastic service form Sime"
"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! "
We take care of the logistics so you don't have to. From customs documentation to real-time tracking, our service ensures your parts arrive on time, every time. Reliable, straightforward delivery you can trust.
Full 12-month warranty
ISO 9001:2015 certified
Swift global delivery
Courtney Zeinert
Facilities Manager
Whether you need advice or help finding the right part, our team is available to assist and keep your operations running smoothly.