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3RU2126-4DB0
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3RU2126-4DB0
SIEMENS
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3RU2126-4DB0 - Thermal Overload Relay 20 - 25 A, Direct Mounting, Manual Reset, Suitable For S0 Size 3RT Contactor - siemens

Cat No. 3RU2126-4DB0
Category Over Load Relay
Stock In Stock
Condition Brand New, Sealed Packaging
Product Type Over Load Relay

In Stock — 10 Qty

$57.77
Quantity Expected Delivery
10 Units 25 Business Days

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Technical Specification

SIEMENS 3RU2126-4DB0 Over Load Relay Technical Specification

Over Load Relay
Bimetal relay Type -
Contactor Type 3RU
Current Range 20-25A
Range of Product —
Secondary Volt Ac -
Sub Family -
Type Thermal Overload Relay

Product Details

Siemens 3RU2126-4DB0 - Overload relay 20...25 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 3RU2126-4DB0 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 3RU2126-4DB0 - Overload relay 20...25 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 3RU2126-4DB0

The Siemens 3RU2126-4DB0 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 3RU2126-4DB0 is available on Electrihub with detailed wiring diagrams, trip curves, and installation specifications.
The price of SIEMENS 3RU2126-4DB0 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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Vivaan Malhotra Jun 8, 2026

Standard high quality from SIEMENS. The 3RU2126-4DB0 overload protection relay fits perfectly and works without issues. Great service from RAS Electrihub.

Rishabh Roy Jun 8, 2026

Got the SIEMENS 3RU2126-4DB0 delivered on time for our project breakdown. RAS Electrihub saved us a lot of downtime. Quality is top-notch.

Dinesh Pillai Jun 8, 2026

Very happy with the purchase of this Over Load Relay from RAS Electrihub. It's an original SIEMENS part, well within the budget and came with standard warranty support.

Manish Naik Jun 8, 2026

We routinely source our panel components from RAS Electrihub. This SIEMENS Over Load Relay (3RU2126-4DB0) is highly reliable and authentic. Highly recommend their .in site.

Amit P. Dec 2, 2025

We have deployed SIEMENS 3RU2126-4DB0 across multiple motor installations and consistently achieved excellent overload protection performance. The 3RU2126-4DB0 construction is robust, the thermal sensing is accurate, and the trip characteristics are precisely calibrated.

Camila S. Dec 2, 2025

After extensive testing of SIEMENS 3RU2126-4DB0, this device demonstrates exceptional overload protection characteristics. The 3RU2126-4DB0 protection mechanism is responsive, accurate, and reliable under various load conditions. Installation was straightforward, and integration with motor control systems was seamless.

Amit P. Dec 2, 2025

Outstanding quality and consistent SIEMENS 3RU2126-4DB0 reliability.

Luis G. Dec 2, 2025

Outstanding value SIEMENS 3RU2126-4DB0 with superior protection features.

Isabella T. Dec 2, 2025

Extensive field testing confirms the superior quality of SIEMENS 3RU2126-4DB0. The 3RU2126-4DB0 construction is robust, the overload protection mechanism is accurate, and the operational efficiency is outstanding.

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