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Siemens SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC 12.5A 9 A F.L.C 7.5 kW 3RU2126-1KB0

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Siemens SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC 12.5A 9 A F.L.C 7.5 kW 3RU2126-1KB0

Name: Siemens SIRIUS 3RU2 Thermal Overload Relay 1 NO/1 NC 12.5A 9 A F.L.C 7.5 kW 3RU2126-1KB0
Brand: Siemens
SKU: 216674
Price: 79.6 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	3RU2126-1KB0
Depth	73mm
IP Rating	IP20
Width	45mm
Mount Type	Direct
Series	SIRIUS 3RU2
Power Rating	7.5kW
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	12.5A
Number of Auxiliary Contacts	2
Pole and Throw Configuration	3
FLC Motor Rating	12.5, 9A
Adjustable Current Range	9 → 12.5 A

Key Features

Suitable for motor rated full load currents of 9 to 12.5 amperes.
Features automatic and manual reset methods for versatile operation.
Designed with screw-type terminals for secure electrical connections.
Compact dimensions of 87mm length, 45mm width, and 73mm depth for space-saving installation.
Offers protection for motors up to 7.5 kW power rating at 690 V AC supply.
Equipped with 1 Normally Open and 1 Normally Closed contact for control signaling.
Incorporates switch position indicator and stop button for easy monitoring and operation.
Rated with an IP20 protection class suitable for indoor industrial environments.

Product Description

Siemens 3RU2126-1KB0 SIRIUS 3RU2 Thermal Overload Relay is designed for reliable current-sensitive protection of motors with normal starting conditions. It features a 1 Normally Open and 1 Normally Closed contact configuration, with an adjustable current range from 9 to 12.5 amperes, supporting motor full load currents of 12.5 A and 9 A respectively. This relay is rated for motors up to 7.5 kW power rating and operates at a contact voltage of 690 V AC.

The device supports automatic and manual reset methods with a selector switch and includes a STOP button and switch position indicator for efficient control and monitoring. It is equipped with screw terminals designed strictly for screw terminal overloads, ensuring secure wiring installations. The compact design with dimensions 87mm (L) x 45mm (W) x 73mm (D) allows installation in constrained panel environments.

With an IP20 rating, this relay is suited for industrial indoor applications and can be surface or DIN-rail mounted. It complies with multiple international standards such as IEC 60068-2-27, IEC 61508, CSA, UL, CE, and CCC, endorsing its safety and reliability in industrial automation and motor control applications. The product is manufactured in Germany, ensuring high manufacturing quality.

Adjustable current range from 9 to 12.5 A for optimal motor protection. Automatic and manual reset methods for flexible operation. Screw terminal connection ensures secure and lasting contacts. Complies with global standards for safety and performance certifications.

Compact form factor designed for space-efficient mounting. Switch position indicator and STOP button facilitate easy status checking and operation. IP20 protection class suitable for protected industrial environments. Suitable for use with Sirius Size S0 and S00 contactors.

Impulse voltage resistance of 6 kV offers robust electrical resilience. Versatile mounting options including surface and DIN-rail stand-alone installations.

Ideal for use in industrial automation, manufacturing plants, and electrical motor control panels where precise overload protection and reliable functionality are critical. Siemens SIRIUS overload relay ensures protection of motors from overloads, helping prevent downtime and equipment damage.

Explore more high-quality thermal overload relays and related automation products in the Electronics & Electricals > Relays & Contactors > Thermal Overload Relay category at EnvMart.

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Frequently Asked Questions

The Siemens SIRIUS 3RU2126-1KB0 thermal overload relay has an adjustable current range from 9 to 12.5 amperes.

This model is rated for motors up to 7.5 kW power rating.

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

It is equipped with screw-type terminals for secure electrical connections.

The relay has an IP20 protection class, making it suitable for indoor industrial environments.

This unit features a configuration of 1 Normally Open (NO) and 1 Normally Closed (NC) contact.

It supports both automatic and manual reset methods, providing versatile operation.

The contact voltage rating for the Siemens SIRIUS 3RU2126-1KB0 is 690 V AC.

The maximum operating temperature is 70°C and the minimum is -40°C.

This relay can be mounted directly or on a DIN rail, offering flexible installation options.

It complies with multiple international standards including IEC 60068-2-27, IEC 61508, CSA, UL, CE, and CCC.

This relay is ideal for use in industrial automation, manufacturing plants, and electrical motor control panels where overload protection is critical.