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Siemens
3RU2126-4AB0
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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RU2126-4AB0 |
| Alternative Part Number | 3RU21264AB0 |
| Manufacturer | Siemens |
| Type | Overload Relay |
| Contact Configuration | 1NO; 1NC |
| Rated Voltage | 690 V ac |
| Rated Current | 16 A |
| Mounting Style | Vertical |
| Connection Type | Screw |
| Dimensions | 45 x 107 x 84.8 mm |
| Number of Poles | 3 |
| Operating Temperature Range | -40 to +70 °C |
| Insulation Voltage | Rated at 690 V with degree of pollution 3 |
| Altitude of Installation Site | Up to 2,000 metres above sea level |
| Relative Humidity | Up to 90% during operation |
| Shock Resistance | 8g / 10 ms |
| Impulse Voltage Resistance | Rated at 6 kV |
| Real Loss Power | Typical total 3.9 W |
| Trip Class | CLASS 10 |
| Size of Overload Relay | S0 |
| Size of Contactor | Can be combined with company-specific S0 |
| Service Power at AC-3 | At 400 V rated value 7.5 kW |
| Protection Class | IP20 |
| Mean Time to Failure (MTTF) | With high demand rate 2,280 years |
| Proportion of Dangerous Failures | With low demand rate 50% |
| Failure Rate (FIT Value) | With low demand rate 50 FIT |
| T1 Value | For proof test interval or service life 20 years |
| Protection against Electrical Shock | Finger-safe |
| Commodity Code | 853649 |
The Siemens 3RU2126-4AB0 is a high-quality overload relay designed to provide efficient motor protection. This component is part of the SIRIUS product family, renowned for its reliability and performance in industrial applications. With a thermal overload release mechanism, it ensures protection for motors by monitoring and reacting to excessive current draw.
This overload relay is adjustable for current response values ranging from 11 to 16 A, making it versatile for various motor sizes and applications. It is engineered to be compatible with size S0 contactors, allowing for seamless integration into existing systems. The device is rated for use with an operating voltage of up to 690 V AC, and it can handle operating currents up to 16 A at AC-3, with a corresponding service power of 7.5 kW at 400 V.
The 3RU2126-4AB0 is designed with a trip class of CLASS 10, providing a quick response to prevent motor damage due to overload conditions. The unit's compact dimensions, with a height of 85 mm, a width of 45 mm, and a depth of 85 mm, make it suitable for installations where space is at a premium.
For ease of installation and maintenance, the overload relay features screw-type terminals for both the main and auxiliary circuits. It is built to withstand challenging industrial environments, with an operational temperature range of -40 to +70 °C and a shock resistance that complies with IEC 60068-2-27 standards.
In summary, the Siemens 3RU2126-4AB0 overload relay is a dependable and adaptable solution for motor protection, offering precise overload prevention to enhance the longevity and safety of your motor-driven equipment.
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Frequently Asked Questions
What is the voltage rating for this overload relay?
The overload relay is rated for a maximum operating voltage of 690 V ac.
Can this overload relay be mounted on a contactor?
Yes, this overload relay is designed for direct mounting onto a contactor.
What is the current adjustment range of this overload relay?
The current adjustment range of the overload relay is from 11 A to 16 A.
What are the dimensions of this overload relay?
The dimensions of the overload relay are 45 x 107 x 84.8 mm.
What type of terminals does this overload relay have?
This overload relay is equipped with screw-type terminals for both the main and auxiliary circuits.
What is the trip class of this overload relay?
The trip class of this overload relay is CLASS 10.
What is the ambient temperature range for operating this overload relay?
The ambient temperature range for operating the overload relay is from -40 °C to +70 °C.
What is the insulation voltage of this overload relay?
The insulation voltage of the overload relay, with a degree of pollution 3, is rated at 690 V.
What is the protection class of this overload relay?
The protection class for the frontal/front side of this overload relay is IP20.
How many auxiliary contacts does this overload relay have?
This overload relay has 1 Normally Closed (NC) and 1 Normally Open (NO) auxiliary contact.
What is the maximum altitude for installing this overload relay?
The maximum altitude for installing the overload relay is 2,000 meters above sea level.
Is this overload relay suitable for use in any mounting position?
Yes, the overload relay can be mounted in any position for flexible installation.
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