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3RU2126-4EB0
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3RU2126-4EB0
SIEMENS
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3RU2126-4EB0 - Thermal Overload Relay 27 - 32 A, Direct Mounting, Manual Reset, Suitable For S0 Size 3RT Contactor - siemens

Cat No. 3RU2126-4EB0
Category Over Load Relay
Stock In Stock
Condition Brand New, Sealed Packaging
Product Type Over Load Relay

In Stock — 3 Qty

$98.10
Quantity Expected Delivery
3 Units 25 Business Days

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Technical Specification

SIEMENS 3RU2126-4EB0 Over Load Relay Technical Specification

Over Load Relay
Bimetal relay Type -
Contactor Type 3RU
Current Range 27-32A
Range of Product —
Secondary Volt Ac -
Sub Family -
Type Thermal Overload Relay

Product Details

Siemens 3RU2126-4EB0 - Overload relay 27...32 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 3RU2126-4EB0 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 3RU2126-4EB0 - Overload relay 27...32 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 3RU2126-4EB0

It is used in MCC panels, pump applications, conveyor systems, compressors, HVAC units, and industrial automation setups requiring overload protection.
Yes. RAS Electrihub Private Limited operates as an ISO-certified organization, ensuring quality sourcing, authentic products, and standardized procurement and delivery processes.
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 provides PAN India delivery with reliable logistics, safe packaging, and doorstep delivery across all states and union territories.
The price of SIEMENS 3RU2126-4EB0 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.
The official Siemens datasheet for 3RU2126-4EB0 is available on Electrihub with detailed wiring diagrams, trip curves, and installation specifications.
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.
Check full-load motor current, trip class rating, compatibility with Siemens contactors, auxiliary contact requirements, and reset mode settings.
It monitors the motor current and trips during overload, phase failure, or overheating, preventing damage to motor windings and extending operational lifespan.
The Siemens 3RU2126-4EB0 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.
Price varies depending on current range and model series. Visit Electrihub for the latest Siemens overload relay pricing and availability.
The SIEMENS 3RU2126-4EB0 is a high-grade Over Load Relay engineered primarily to protect three-phase AC electric motors from damaging thermal overloads, prolonged stalled rotors, and phase imbalances. As detailed in its technical specifications, this relay operates as a SIRIUS 3RU21 thermal overload relay (Class 10, up to 40A/100A, optimized for 3RT contactors, featuring built-in phase failure protection and manual/auto reset). It is an essential component for motor control centers (MCCs) and automation panels across India, and can be procured directly with full manufacturer warranty on Electrihub.
The SIEMENS 3RU2126-4EB0 Over Load Relay utilizes internal bimetallic strips calibrated to bend under continuous overcurrent, heating up until they mechanically actuate the auxiliary trip contacts (95-96 NC and 97-98 NO). Additionally, it features differential tripping/travel mechanisms that provide accelerated tripping in the event of a single-phasing or phase failure condition. This prevents severe motor winding burnouts, making the 3RU2126-4EB0 exceptionally reliable for unpredictable power grids in Indian industrial zones.
The SIEMENS 3RU2126-4EB0 is structurally and electrically optimized for direct plug-in mounting to matching SIEMENS power contactors (such as the standard industrial starter ranges), creating a compact and rigid direct-on-line (DOL) or Star-Delta starter assembly. For standalone applications or independent panel mounting, it can be attached to an independent DIN rail or base plate adapter using standard screw terminals, ensuring flexible integration inside electrical panels sourced via Electrihub.in.
The SIEMENS 3RU2126-4EB0 features a front-accessible, adjustable dial that allows panel engineers to precisely set the current trip threshold matching the motor's full load current (FLC). It also includes a versatile user-selectable reset button supporting both 'Manual' reset (requiring field maintenance intervention after a fault verification) and 'Automatic' reset modes. A mechanical trip indication indicator is integrated to speed up diagnostics during maintenance cycles.
Electrihub is India’s leading B2B e-commerce platform for authorized industrial switchgear and automation components. When purchasing the SIEMENS 3RU2126-4EB0 Over Load Relay through Electrihub.in, buyers receive 100% genuine products, full compliance with GST tax invoicing, access to bulk commercial discount schemes, rapid logistics to major industrial hubs, and dedicated technical customer support for complex switchgear coordination challenges.

Reviews & Ratings

4.7
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Ramesh Roy Jun 8, 2026

Received the Over Load Relay in perfect condition. RAS Electrihub team responded quickly to our quotation request. Great option for industrial buyers.

Arjun Nair Jun 8, 2026

Great platform to buy original automation and control components. This 3RU2126-4EB0 Over Load Relay is performing up to the mark. Thanks RAS Electrihub.

Ayush Deshmukh Jun 8, 2026

Completely satisfied with the SIEMENS 3RU2126-4EB0 Over Load Relay purchased via RAS Electrihub. Original packaging was intact, and it was delivered within 3 days.

Piyush Dutta Jun 8, 2026

RAS Electrihub offers the best commercial pricing for SIEMENS switchgears. The 3RU2126-4EB0 works flawlessly in our thermal protection circuits.

Ishaan Yadav 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.

Hassan A. Dec 2, 2025

Extensive field testing confirms the superior quality of SIEMENS 3RU2126-4EB0. The 3RU2126-4EB0 construction is robust, the overload protection mechanism is accurate, and the operational efficiency is outstanding.

Sandeep M. Dec 2, 2025

After extensive testing of SIEMENS 3RU2126-4EB0, this device demonstrates exceptional overload protection characteristics. The 3RU2126-4EB0 protection mechanism is responsive, accurate, and reliable under various load conditions. Installation was straightforward, and integration with motor control systems was seamless.

Lisa Anderson Dec 2, 2025

After extensive testing of SIEMENS 3RU2126-4EB0, this device demonstrates exceptional overload protection characteristics. The 3RU2126-4EB0 protection mechanism is responsive, accurate, and reliable under various load conditions. Installation was straightforward, and integration with motor control systems was seamless.

Neha M. Dec 2, 2025

Superior 3RU2126-4EB0 motor overload protection with fast response.

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