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3RU2126-1KB0
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3RU2126-1KB0
SIEMENS
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3RU2126-1KB0 - Thermal Overload Relay 9 - 12.5 A, Direct Mounting, Manual Reset, Suitable For S0 Size 3RT Contactor - siemens

Cat No. 3RU2126-1KB0
Category Over Load Relay
Stock In Stock
Condition Brand New, Sealed Packaging
Product Type Over Load Relay

In Stock — 7 Qty

$57.26
Quantity Expected Delivery
7 Units 25 Business Days

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Technical Specification

SIEMENS 3RU2126-1KB0 Over Load Relay Technical Specification

Over Load Relay
Bimetal relay Type -
Contactor Type 3RU
Current Range 9-12.5A
Range of Product —
Secondary Volt Ac -
Sub Family -
Type Thermal Overload Relay

Product Details

Siemens 3RU2126-1KB0 - Overload relay 9.0...12.5 A Thermal For motor protection Size S0, Class 10 Contactor mounting Main circuit: Screw Auxiliary circuit: Screw Manual-Automatic-Reset. We are dedicatedly involved in providing an excellent quality products at Electrihub.

Product Dimensions

SIEMENS 3RU2126-1KB0 dimensions and weight

Dimensions (L × W × H)
Length 4.9 cm
Width 10.2 cm
Height 10.2 cm
Weight
Net Weight 0.5 kg

Dimensions are approximate. For precise dimensional drawings, contact us.

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Product Overview

Siemens 3RU2126-1KB0 - Overload relay 9.0...12.5 A Thermal For motor protection Size S0, Class 10 Contactor mounting Main circuit: Screw Auxiliary circuit: Screw Manual-Automatic-Reset. We are dedicatedly involved in providing an excellent quality products at Electrihub.

Frequently Asked Questions for 3RU2126-1KB0

The Siemens 3RU2126-1KB0 overload relay provides dependable motor protection with thermal overload sensing, phase imbalance detection, adjustable current settings, manual/auto reset options, and seamless coordination with Siemens contactors.
It is used in MCC panels, pump applications, conveyor systems, compressors, HVAC units, and industrial automation setups requiring overload protection.
It monitors the motor current and trips during overload, phase failure, or overheating, preventing damage to motor windings and extending operational lifespan.
Check full-load motor current, trip class rating, compatibility with Siemens contactors, auxiliary contact requirements, and reset mode settings.
Ensure proper mounting alignment with the contactor, correct wiring of control circuits, accurate overload dial setting based on motor FLC, and verify the trip/reset operation.
Price varies depending on current range and model series. Visit Electrihub for the latest Siemens overload relay pricing and availability.
The official Siemens datasheet for 3RU2126-1KB0 is available on Electrihub with detailed wiring diagrams, trip curves, and installation specifications.
The price of SIEMENS 3RU2126-1KB0 Over Load Relay depends on specifications, availability, and market conditions. You can check the latest GST-inclusive price on Electrihub India, which provides genuine products, transparent billing, and PAN India delivery.
Yes. RAS Electrihub Private Limited provides PAN India delivery with reliable logistics, safe packaging, and doorstep delivery across all states and union territories.
Yes. RAS Electrihub Private Limited issues GST-compliant invoices and also supports PO-based invoicing for businesses, contractors, and organizations across India.
Yes. RAS Electrihub Private Limited operates as an ISO-certified organization, ensuring quality sourcing, authentic products, and standardized procurement and delivery processes.

Reviews & Ratings

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Prabhat Kumar Jun 8, 2026

Great platform to buy original automation and control components. This 3RU2126-1KB0 Over Load Relay is performing up to the mark. Thanks RAS Electrihub.

Rahul Gupta Jun 8, 2026

Completely satisfied with the SIEMENS 3RU2126-1KB0 Over Load Relay purchased via RAS Electrihub. Original packaging was intact, and it was delivered within 3 days.

Gopal Menon Jun 8, 2026

Superb product quality from SIEMENS. Thanks to RAS Electrihub for the secure packing and tracking updates until it reached our factory site.

Divya L. Dec 2, 2025

SIEMENS 3RU2126-1KB0 reliable and efficient motor overload protection device.

Jessica T. Dec 2, 2025

We have integrated SIEMENS 3RU2126-1KB0 into our motor control systems, and performance has exceeded expectations. The 3RU2126-1KB0 protection accuracy, thermal sensing reliability, and overall durability are excellent for demanding motor applications.

Steven Hall Dec 2, 2025

The SIEMENS 3RU2126-1KB0 overload relay has proven to be a reliable choice for industrial motor protection systems. The 3RU2126-1KB0 fast response time, accurate thermal settings, and durable construction have significantly improved our motor system reliability.

Giulia R. Dec 2, 2025

Superior 3RU2126-1KB0 overload protection capabilities with quick response times.

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