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header-product Siemens 3RV2021-4DA25 Motor Protection Circuit Breaker, Class 10, 18-25A, 325A Short-Circuit Release
86.49 €

Siemens 3RV2021-4DA25 Motor Protection Circuit Breaker, Class 10, 18-25A, 325A Short-Circuit Release

Siemens 3RV2021-4DA25 Motor Protection Circuit Breaker Photo 1
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Siemens 3RV2021-4DA25 Motor Protection Circuit Breaker, Class 10, 18-25A, 325A Short-Circuit Release

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Siemens 3RV2021-4DA25 Motor Protection Circuit Breaker, Class 10, 18-25A, 325A Short-Circuit Release

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Short description

The Siemens 3RV2021-4DA25 is a size S0 motor protection circuit breaker designed for reliable motor control and protection. It features a thermal overload release range of 18-25A and a short-circuit release of 325A. Classified as Class 10, this device ensures efficient protection against overloads and short circuits in industrial electrical systems, providing high operational safety and durability for various motor-driven applications.
Available for order: 2 pcs.
Warranty: 2 Years
SKU: 1840611
free shipment

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
30.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
04.08.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.44 kg)
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
04.08.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
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3 mth. х 28.83 €

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All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 2.40 euros per month
Together cheaper
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Product information

Description

The Siemens 3RV2021-4DA25 is a high-performance size S0 motor protection circuit breaker engineered to provide robust control and safety for industrial motor applications. This device is specifically designed to detect and interrupt electrical faults, ensuring that motors are protected from thermal overloads and short-circuit currents. With its precise calibration and reliable switching mechanism, it serves as a critical component in maintaining the operational integrity of electrical systems in demanding environments.

Advantages

This circuit breaker offers exceptional reliability through its Class 10 thermal overload release, which allows for quick response times during overload conditions while preventing nuisance tripping during normal motor startup. Its compact S0 size makes it an ideal choice for space-constrained control cabinets without compromising on performance. The integrated short-circuit release mechanism provides high-speed protection against severe electrical faults, significantly reducing the risk of equipment damage and downtime. Furthermore, the device is built to withstand rigorous industrial use, ensuring long-term durability and consistent operational safety.

Suitable for

  • Industrial motor control centers
  • Conveyor systems and material handling equipment
  • Pumps and ventilation fan control
  • Compressor motor protection
  • Automated manufacturing machinery

When it may not be suitable

This device is not suitable for applications where the motor current falls outside the 18-25A range, as it will not provide the intended protection. It is also not designed for use in environments with extreme moisture or corrosive gases unless housed in an appropriate protective enclosure.

Key specifications

  • Rated current range: 18-25A
  • Short-circuit release: 325A
  • Trip class: Class 10
  • Size: S0
  • Function: Thermal overload and short-circuit protection

How to use

The circuit breaker should be installed by a qualified professional within a standard electrical control cabinet. It is typically mounted on a DIN rail or via screw mounting. Once installed, the thermal overload dial should be set to the specific full-load current of the motor being protected. The device can be manually operated using the front-facing toggle switch to start or stop the motor, and it will automatically trip to the off position in the event of an electrical fault.

What to consider before purchase

  • Verify that the motor full-load current is within the 18-25A range.
  • Ensure the control cabinet has sufficient space for an S0 size device.
  • Check compatibility with existing DIN rail systems or mounting requirements.
  • Confirm that the short-circuit capacity meets the requirements of your specific electrical installation.
Usage recommendations: Regularly inspect the circuit breaker for signs of wear or heat damage. After a trip event, always investigate the cause of the fault before resetting the device to ensure the motor and wiring remain in safe operating condition.

Description

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Customer reviews

Customer questions

FAQ

How much does the Siemens 3RV2021-4DA25 Motor Protection Circuit Breaker cost, and is it available for purchase?

The price is 86.49 € (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 30.07.2026 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, Installment. All transactions are 100% secure and encrypted.

Can Siemens 3RV2021-4DA25 Motor Protection Circuit Breaker be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Siemens 3RV2021-4DA25 Motor Protection Circuit Breaker online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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.
warranty
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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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.