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header-product Siemens 3RU2126-1CB0 Thermal Overload Relay, 1.8-2.5A, Size S0, Class 10
45.99 €

Siemens 3RU2126-1CB0 Thermal Overload Relay, 1.8-2.5A, Size S0, Class 10

Siemens 3RU2126-1CB0 Thermal Overload Relay Photo 1
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Siemens 3RU2126-1CB0 Thermal Overload Relay, 1.8-2.5A, Size S0, Class 10

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Siemens 3RU2126-1CB0 Thermal Overload Relay, 1.8-2.5A, Size S0, Class 10

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Short description

The Siemens 3RU2126-1CB0 is a thermal overload relay designed for reliable motor protection. Featuring an adjustable current range of 1.8 to 2.5A and Class 10 tripping characteristics, this size S0 device effectively prevents damage from overloads and phase failures. It is suitable for industrial control panels and motor starter applications, ensuring operational safety and longevity for electrical equipment.
Available for order: 2 pcs.
Warranty: 2 Years
SKU: 3434991
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Cheapest delivery:

Venipak Pickup LV, Venipak Locker LV

Pick-up points

Venipak Pickup LV

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
22.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
27.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.18 kg)
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
27.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
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Product information

Description

The Siemens 3RU2126-1CB0 thermal overload relay is a high-quality protective component engineered to safeguard electric motors from thermal damage caused by overloads or phase failures. Designed for seamless integration into industrial control systems, this device provides precise current monitoring within an adjustable range of 1.8 to 2.5 amperes. Its robust construction and reliable tripping mechanism ensure that motors operate within safe parameters, effectively extending the service life of your electrical equipment.

Advantages

This thermal overload relay offers exceptional reliability and consistent performance in demanding industrial environments. By utilizing Class 10 tripping characteristics, it provides a balanced response time that protects motors during startup while preventing damage from sustained overcurrent conditions. The compact size S0 design allows for space-efficient installation in control cabinets, while the adjustable current setting provides flexibility for various motor configurations. Its integration with Siemens motor starter systems ensures a standardized and secure electrical installation process.

Suitable for

  • Industrial motor starter applications
  • Protection of three-phase induction motors
  • Control panels for manufacturing machinery
  • HVAC system motor control
  • Pump and conveyor belt drive systems

When it may not be suitable

This device is not intended for use in circuits where the motor current exceeds the 1.8 to 2.5A range, as it will not provide the necessary protection. It is also not suitable for applications requiring electronic overload protection with advanced diagnostic features or communication capabilities.

Key specifications

  • Adjustable current range: 1.8 to 2.5 A
  • Tripping class: Class 10
  • Size: S0
  • Protection type: Thermal overload and phase failure
  • Mounting type: Direct mounting to contactors

How to use

The relay is designed for direct mounting onto compatible contactors, creating a compact motor starter unit. Once installed, the desired current value should be set using the adjustment dial on the front of the device to match the rated current of the connected motor. After installation, the device should be tested using the integrated test function to ensure the tripping mechanism is operational. The reset mode can be configured to manual or automatic depending on the specific safety requirements of the application.

What to consider before purchase

  • Verify that the motor rated current falls within the 1.8 to 2.5A range
  • Ensure compatibility with the physical size S0 contactor
  • Confirm the required tripping class for your specific motor application
  • Check the environmental conditions of the installation site

Usage recommendations

Always ensure that the power supply is disconnected before installing or adjusting the relay. Regularly inspect the device for signs of wear and perform periodic testing to confirm that the overload protection remains functional under load conditions.

Description

Machine translation. Load original

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Customer reviews

Customer questions

FAQ

How much does the Siemens 3RU2126-1CB0 Thermal Overload Relay cost, and is it available for purchase?

The price is 45.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 2 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 22.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All Siemens products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Siemens service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.
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14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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