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Siemens SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC 3.5-5 A Adjustable Current Range 4 kW Power Rating 3RU2126-1FB0

Name: Siemens SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC 3.5-5 A Adjustable Current Range 4 kW Power Rating 3RU2126-1FB0
Brand: Siemens
SKU: 216676
Price: 78.69 USD
Availability: InStock

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Category Thermal Overload Relay Brand Siemens Condition New

Specifications

Country of Origin	Germany
Brand	Siemens
Length	87mm
Model	3RU2126-1FB0
Depth	73mm
IP Rating	IP20
Width	45mm
Mount Type	Direct
Series	SIRIUS 3RU2
Power Rating	4kW
Maximum Operating Temperature	70°C
Minimum Operating Temperature	-40°C
Terminal type	Screw
Contact Voltage	690V ac
Reset Method	Automatic & Manual
Normal State Configuration	1 NO/1 NC
Relay Contact Current	5A
Number of Auxiliary Contacts	2
Pole and Throw Configuration	3
FLC Motor Rating	3.5, 5A
Adjustable Current Range	3.5 → 5 A
Siemens SIRIUS ACT 3-position Selector Switch, Latching, 22mm CutoutBrand	Siemens

Key Features

Adjustable current range from 3.5 to 5 amperes for versatile motor protection.
Equipped with 1 normally open (NO) and 1 normally closed (NC) contact configuration.
Power rating of 4 kilowatts suitable for a variety of motor sizes.
Screw terminal type ensures secure and reliable electrical connections.
Compact dimensions with 45mm width, 87mm length, and 73mm depth.
Operating temperature range from -40°C to +70°C accommodates harsh industrial environments.
Compliant with multiple international standards including IEC, UL, CSA, CE, and CCC approvals.
Designed for direct mounting and suitable for use with Sirius Size S0 & S00 Contactors.

Product Description

The Siemens SIRIUS 3RU2 Thermal Overload Relay model 3RU2126-1FB0 is engineered to provide precise and reliable protection for electrical motors through its current-sensitive design. Featuring an adjustable current range of 3.5 to 5 amperes, this relay accommodates various motor load requirements with a power rating of 4 kW. The device is equipped with one normally open (NO) and one normally closed (NC) contact, facilitating versatile control configurations.

Its sturdy construction enables it to operate within a wide temperature range from -40°C to 70°C, suitable for demanding industrial, manufacturing, HVAC, and automation environments. The relay supports both automatic and manual reset methods, enhancing operational flexibility. Mounting is direct with screw terminals to ensure robust electrical connections.

Additional user-friendly features include a switch position indicator, test function capabilities, a STOP button for safety, and a selector switch to choose between manual and automatic reset modes. The device is compatible with Siemens Sirius Size S0 and S00 Contactors and supports surface or DIN-rail mounting options.

This Thermal Overload Relay complies with international standards such as IEC 81346-2, IEC 61508, UL, CSA, CE, CCC, and others, ensuring safety, quality, and performance in professional applications. It is manufactured in Germany, reflecting Siemens' commitment to engineering excellence.

Adjustable current range from 3.5 to 5 A for adaptable motor protection. 1 NO and 1 NC contacts facilitate versatile control. Power rating of 4 kW fits a broad range of motor applications. Supports manual and automatic reset methods for convenience.

Screw terminal type offers secure electrical connections. Wide operating temperature from -40°C to +70°C for industrial use. Certified with IEC, UL, CSA, CE, and CCC approvals for safety and reliability. Equipped with practical features including a test function, STOP button, and reset mode selector.

Designed for direct mounting with compatibility for Sirius Contactors S0 and S00 sizes. Manufactured in Germany ensuring high quality standards. Explore the broad range of Siemens industrial automation components at EnvMart for trusted performance in control and protective relay applications.

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Frequently Asked Questions

The Siemens SIRIUS 3RU2 thermal overload relay has an adjustable current range from 3.5 to 5 amperes, allowing it to accommodate various motor load requirements.

This model has a power rating of 4 kilowatts, making it suitable for a variety of motor sizes.

It is equipped with one normally open (NO) and one normally closed (NC) contact configuration, facilitating versatile control options.

The operating temperature range for this thermal overload relay is from -40°C to +70°C, suitable for harsh industrial environments.

This model is designed for direct mounting and features screw terminals for secure and reliable electrical connections.

The dimensions of this relay are 87mm in length, 45mm in width, and 73mm in depth.

It is compatible with Siemens Sirius Size S0 and S00 contactors, allowing for seamless integration in control systems.

The relay supports both automatic and manual reset methods, providing operational flexibility.

The IP rating of this model is IP20, indicating its suitability for indoor use.

The maximum contact voltage for the 3RU2126-1FB0 model is 690V AC.

This thermal overload relay complies with multiple international standards, including IEC, UL, CSA, CE, and CCC approvals, ensuring safety and performance.