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"Absolutely fantastic service. Rob was very helpful. Great communication. The requested part was shipped in no time."
The Siemens 3RU2126-4DC0 is a thermal overload relay designed to provide reliable motor protection. This component is part of the SIRIUS series, known for its robust performance and durability. It is engineered to safeguard motors by preventing overheating, with an adjustable current range of 20 to 25 A. The relay is suitable for use in a variety of industrial applications, offering a high degree of protection with an IP20 rating. It operates efficiently within a wide temperature range, from -40 to +70 °C, making it versatile for different environmental conditions. The 3RU2126-4DC0 features integrated auxiliary contacts, including one normally closed (NC) and one normally open (NO) contact, which facilitate seamless integration into control circuits. With a rated operating voltage of up to 690 V and compatibility with AC-3 applications, this relay is a dependable choice for ensuring the longevity and performance of your motor systems.
| Specification | Description |
|---|---|
| Part Number | 3RU2126-4DC0 |
| Manufacturer | Siemens |
| Product Brand Name | SIRIUS |
| Type | Thermal Overload Relay |
| Current Range | 20 - 25 A |
| Operating Voltage | Up to 690 V |
| Trip Class | CLASS 10 |
| Protection Class | IP20 |
| Number of Poles | 3 |
| Operating Temperature | -40 to +70 °C |
| Storage Temperature | -55 to +80 °C |
| Altitude of Installation | Up to 2,000 m |
| Humidity | 90% during operation |
| Shock Resistance | 8g / 10 ms |
| Impulse Voltage Resistance | 6 kV |
| Real Loss Power | 3.9 W |
| Size of Overload Relay | S0 |
| Auxiliary Contacts | 1 NO + 1 NC |
| Main Circuit Connection | Spring-loaded terminals |
| Auxiliary Circuit Connection | Spring-loaded terminals |
| Conductor Cross-section for Main Contacts | 2x (1 ... 10 mm²) |
| Conductor Cross-section for Auxiliary Contacts | 2x (0.5 ... 2.5 mm²) |
| Approvals | CE, UL, CSA |
| Application | Designed for motor protection, the Siemens 3RU2126-4DC0 thermal overload relay offers reliable performance in industrial environments. It is suitable for use in a variety of applications where motor protection is critical, ensuring operational efficiency and safety. |
Big thanks to Rob for helping with an urgent request we had on a Friday afternoon. The part we needed was in Europe, and Rob went out of his way to get it ordered and delivered to us by the following Tuesday.City Bearings
Found the component I was looking for at a great price. Excellent support from the staff as I was paying by wire transfer. Fast delivery and very good packaging.Adriano Tiberi
Extremely helpful. They shipped me a replacement unit the next day, and I was up and running within 24 hours. A brand-new replacement from the machinery manufacturer would have had a 7-day lead time.Sean Conlin
Found the part we needed at the best price. I spoke with Rob to make sure it was actually in stock, as many companies don’t really have it available to ship. It was ready, checked, and shipped, and we received it within a few days from their German stock. Would definitely use again and recommend.Chris Sentance
After ordering an urgent part from Marvo, I received excellent customer service and Rob was very helpful.Claire Hinchliff
Excellent service, especially from Mark, who stayed late to make sure the part arrived the same day since it was a critical component for me, even though it was my first time using Marvo. I will definitely use them again.Josh Holt
Big thanks to Rob for helping with an urgent request we had on a Friday afternoon. The part we needed was in Europe, and Rob went out of his way to get it ordered and delivered to us by the following Tuesday.City Bearings
Absolutely fantastic service. Rob was very helpful. Great communication. The requested part was shipped in no time.Konrad Eliaszuk
Found the part we needed at the best price. I spoke with Rob to make sure it was actually in stock, as many companies don’t really have it available to ship. It was ready, checked, and shipped, and we received it within a few days from their German stock. Would definitely use again and recommend.Chris Sentance
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