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AUXILIARY CONTACT BLOCK
Available
Free Shipping
2 Year MRO warranty
| Part Number | 3RH1921-1CA10 |
| Manufacturer | Siemens |
| Type | Contactors |
| Model # | 3RH19211CA10 |
| MRO Warranty | 2 Year |
| Range | 3RT |
| Category | Contact Block |
| Description | Auxiliary |
| Poles | 1 pole |
| Current rating | 10A |
| Contact | 1NO |
| Mounting | Lateral |
| Connection | Screw terminal |
| Voltage rating | 240 VAC |
MRO Electric repairs CNCs, PLCs, Servo/Spindle Drives, Motors, Amplifiers, VFDs, HMIs, and more, most of which can be repaired in only 3-5 days.
MRO can restore your failed 3RH1921-1CA10 to remanufactured condition and save you up to 75% compared to buying new. We offer standard repair pricing to ensure you the best value for your repair.
Our certified technicians use rigorous testing procedures to ensure your parts are restored to fully functioning condition. Our team proudly stands behind all repairs by providing a minimum 2-year MRO warranty.
Our technicians have vast experience with most manufacturers and models. In addition to this 3RH1921-1CA10 we also repair a wide range of other Siemens products, so if you don’t see the model you need, please contact us.
If you are interested in getting credit for your faulty 3RH1921-1CA10, just let us know, and we can issue you an RMA to send it in as an exchange. Our exchange program provides you with savings and keeps us stocked for the next time you need anything.
Want it shipped today?
Ask about exchanging your faulty 3RH1921-1CA10 for credit when ordering from MRO Electric
The Siemens 3RH19211CA10 Auxiliary Contact Block is a high-quality control accessory that extends the functionality of Siemens 3RT Series contactors. Built for reliability and precision, this 1-pole auxiliary contact block with one normally open (1NO) contact is perfect for industrial applications that require dependable signaling, control feedback, and contactor status indication.
Rated for 10 amps at 240 VAC, the Siemens 3RH19211CA10 provides consistent electrical performance and durability in demanding environments. Whether used in control circuits, automation panels, or motor starters, it ensures clean switching and long electrical life. Its robust design guarantees dependable operation even under frequent switching cycles, making it ideal for industrial automation, HVAC systems, and manufacturing lines.
Designed with lateral mounting capability, the 3RH19211CA10 installs effortlessly onto compatible contactors. The screw terminal connection ensures a secure fit and stable electrical contact, reducing vibration-related wear and improving system reliability. Its compact design saves valuable panel space while maintaining full compatibility with Siemens' renowned SIRIUS series components.
Siemens is a global leader in automation and control technology, known for precision engineering and reliable components. The 3RH19211CA10 is manufactured under strict quality standards, ensuring a long service life and optimal performance. From small control cabinets to large automation systems, this auxiliary contact block helps you maintain efficient, safe, and high-performing operations.
When you purchase from MRO Electric, you get more than just a part—you get peace of mind. Each Siemens 3RH19211CA10 comes with a 2-year warranty, free shipping, and immediate availability. Our team ensures fast delivery and expert support, helping you minimize downtime and maintain your automation systems with confidence.
10 Frequently Asked Questions
What is the function of the Siemens 3RH19211CA10?
It provides auxiliary contact feedback and signaling for Siemens 3RT contactors.
How many contacts does it have?
It has 1 Normally Open (1NO) contact.
What is its voltage and current rating?
It's rated for 240 VAC and 10 amps.
Is it compatible with other Siemens contactors?
Yes, it fits the Siemens 3RT Series contactors.
How is it mounted?
The 3RH19211CA10 uses lateral mounting for easy installation.
Does it use screw or spring terminals?
It features screw terminals for secure electrical connections.
Can this be used in motor control panels?
Absolutely — it's ideal for motor starters and control circuits.
Is it durable for heavy-duty use?
Yes, it's built for industrial reliability and long service life.
What warranty is included?
MRO Electric provides a 2-year warranty.
Is it available for immediate shipment?
Yes, it's in stock and ships free immediately from MRO Electric.
Check out the rest of our Siemens product line. Whether it's using our online instant quote feature, giving us a call at (800) 691-8511, or emailing us at sales@mroelectric.com, we strive for customer satisfaction first. This means lower prices and better service for you. For more products like 3RH1921-1CA10, take a look at more from our Contactors line. If your current unit has gone bad, take advantage of our Core Exchange program for the most inexpensive route. You can learn more about this program on our FAQ page here. We offer a repair service on all of our 3RH1921-1CA10 products that keep your downtime to a minimum. To stay up to date on manufacturer news, as well as access any of our datasheets, manuals, or other documentation, we suggest you take a look at our blog.
Very happy with the overall service, delivery, communication and delivery,
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Abbey-Purchasing Specialist
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