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Specification & Description
| Specification | Description |
|---|---|
| Part Number | 3RU2126-4DB0 |
| Alternative Part Number | 3RU21264DB0 |
| Manufacturer | Siemens |
| Series | SIRIUS |
| Product Type | Overload Relay |
| Operating Voltage | 690 V ac |
| Contact Configuration | 1NC/1NO |
| Connection Type | Screw |
| Dimensions | 45 x 85 x 85 mm |
| Number of Poles | 3 |
| Adjustable Current Range | 20...25 A |
| Trip Class | CLASS 10 |
| Operating Frequency | 50...60 Hz |
| Insulation Voltage | 690 V ac with degree of pollution 3 |
| Surge Voltage Resistance | 6 kV |
| Ambient Operating Temperature | -40...+70 °C |
| Mounting Position | Any |
| Fastening Method | Contactor mounting |
| Protection Class | IP20 on the front according to IEC 60529 |
| Touch Protection | Finger-safe, for vertical contact from the front according to IEC 60529 |
| Display Version | Slide switch for switching status |
| Certificates/Approvals | General Product Approval for use in hazardous locations, ATEX directive 2014/34/EU compliant |
The Siemens 3RU2126-4DB0 is a high-quality overload relay from the renowned SIRIUS series, designed to provide reliable motor protection. This component is engineered to handle a voltage of up to 690 V ac and is suitable for a variety of industrial applications. It features a compact design with dimensions of 45 x 85 x 85 mm, making it an excellent choice for installations where space is at a premium.
The overload relay is equipped with both 1NC (normally closed) and 1NO (normally open) contacts, and it utilises a screw connection method for secure and straightforward installation. The device is rated for a thermal overload release current range of 20 to 25 A, ensuring that it can be adjusted to protect motors of different sizes within this range.
With a trip class of 10, the Siemens 3RU2126-4DB0 is designed to provide a quick response to overloads, thereby safeguarding the motor and associated equipment from potential damage. The manual-automatic reset feature offers flexibility in operation, allowing for both manual intervention and automatic reset in the event of an overload trip.
This overload relay is part of the SIRIUS product family, which is known for its durability and reliability in demanding industrial environments. The 3RU2126-4DB0 is a testament to Siemens' commitment to quality and innovation in motor control and protection.
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Frequently Asked Questions
What is the voltage rating for this overload relay?
The overload relay is rated for operating voltages up to 690 V ac.
Can this overload relay be mounted directly to a contactor?
Yes, the overload relay is designed for contactor mounting, allowing for direct integration with compatible contactors.
What are the dimensions of this overload relay?
The dimensions of the overload relay are 45 x 85 x 85 mm.
What is the trip class of this thermal overload relay?
This thermal overload relay has a trip class of 10.
What is the range of the adjustable current response value for this relay?
The adjustable current response value for this relay ranges from 20 to 25 A.
What type of terminals does this overload relay have for electrical connections?
The overload relay features screw-type terminals for both the main current circuit and the auxiliary and control circuit.
Is there a manual reset function on this overload relay?
Yes, the overload relay comes with a manual-automatic-reset feature.
What is the insulation voltage of this overload relay?
The insulation voltage, with a degree of pollution 3, is rated at 690 V ac.
What type of protection does this overload relay offer?
The overload relay offers protection class IP20 on the front according to IEC 60529, ensuring finger-safe touch protection for vertical contact from the front.
How many auxiliary contacts does this overload relay have?
The overload relay is equipped with 1 normally closed (NC) contact and 1 normally open (NO) contact for auxiliary purposes.
Part conditions explained
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Used: The product has been previously owned and has been used. It may show signs of wear and tear but is still functional and operational. The condition may vary depending on the specific item and its usage history.
