# Siemens 3RV2021-4PA10 Motor Circuit Breaker, Class 10, 30-36A

**URL:** https://aio.lv/en/product--siemens-3rv2021-4pa10--1796169
**Data updated:** 2026-05-22 07:20 (EEST)
**Category:** Control Systems
**Manufacturer:** Siemens
**Manufacturer code:** 3RV2021-4PA10
**EAN:** 4011209716261
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Siemens 3RV2021-4PA10 is a high-performance motor circuit breaker designed for reliable protection of electric motors. Featuring a Class 10 trip characteristic and an adjustable current range of 30-36A, this device ensures effective overload and short-circuit protection. It is an essential component for industrial automation and motor control systems, providing durability and safety in demanding electrical environments.

## Long description

The Siemens 3RV2021-4PA10 is a robust motor circuit breaker engineered to provide comprehensive protection for electric motors in industrial settings. This device is specifically designed to prevent damage from overloads and short circuits, ensuring the longevity and operational reliability of connected machinery. With its precise Class 10 trip characteristic and an adjustable current setting range of 30 to 36 amperes, it offers a versatile solution for various motor control applications.
Advantages
This motor circuit breaker stands out due to its high switching capacity and reliable performance under demanding electrical conditions. The integrated thermal and magnetic release mechanisms provide rapid response times during fault events, effectively isolating the circuit to prevent further damage. Its compact design allows for efficient use of space within control cabinets, while the high-quality construction ensures long-term durability and consistent operation in harsh industrial environments.
Suitable for
Industrial automation systems
Motor control centers
Heating, ventilation, and air conditioning (HVAC) equipment
Pumping stations and compressor control
When it may not be suitable
This device is not intended for use in circuits where the motor current falls outside the specified 30-36A range. It is also not suitable for applications requiring specialized protection features beyond standard thermal-magnetic overload and short-circuit detection.
Key specifications
Trip class: Class 10
Current setting range: 30-36 A
Protection type: Thermal-magnetic
Application: Motor protection
How to use
Installation should be performed by qualified personnel in accordance with local electrical regulations. The device is typically mounted on a standard DIN rail within an electrical enclosure. Once mounted, the motor leads are connected to the terminals, and the current setting dial is adjusted to match the nominal current of the motor being protected. After installation, the device can be manually switched on or off using the front-facing toggle, and it will automatically trip in the event of an overload or short circuit.
What to consider before purchase
Verify that the motor nominal current is within the 30-36A range.
Ensure the enclosure provides adequate space and ventilation.
Check compatibility with existing control cabinet mounting standards.
Usage recommendations
Regularly inspect the terminals for tightness and ensure the device is free from dust or debris to maintain optimal performance. If a trip occurs, identify and resolve the underlying fault before resetting the breaker.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.383 kg |
| Product colour | Multicolour |

## FAQ

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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. More information about warranty service: https://aio.lv/en/warranty

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