# Siemens 5SL4120-6 Miniature Circuit Breaker, 1-Pole, 20A, 230/400V

**URL:** https://aio.lv/en/product--siemens-5sl4120-6--1971086
**Data updated:** 2026-05-18 02:42 (EEST)
**Category:** Power Sockets
**Manufacturer:** Siemens
**Manufacturer code:** 5SL4120-6
**EAN:** 4001869439259
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 10.99 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 9.08 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--siemens-5sl4120-6--1971086

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 23.07.2026 | free |
| Pickup points | 28.07.2026 | 1.89 EUR |
| Courier delivery to door | 28.07.2026 | 4.99 EUR |

## Summary description

The Siemens 5SL4120-6 is a high-quality 1-pole miniature circuit breaker designed for reliable electrical circuit protection. With a rated current of 20A and compatibility with 230/400V systems, this device ensures safety against overloads and short circuits in residential and commercial electrical installations. It features a robust design for long-term performance and easy DIN rail mounting.

## Long description

The Siemens 5SL4120-6 is a professional-grade 1-pole miniature circuit breaker engineered to provide dependable protection for electrical circuits. Designed to handle a rated current of 20A, this device is suitable for both 230V and 400V electrical systems, making it a versatile component for safeguarding wiring and connected equipment against the risks of overloads and short circuits. Its construction focuses on durability and consistent performance, ensuring reliable operation in various electrical environments.
Advantages
This miniature circuit breaker offers high operational reliability due to its robust internal mechanism and high-quality materials. The device is designed for efficient installation, featuring a standard interface that allows for quick and secure mounting onto DIN rails. By providing precise tripping characteristics, it effectively prevents damage to electrical installations, thereby enhancing the overall safety of residential and commercial power distribution systems.
Suitable for
Residential electrical distribution boards
Commercial office building power circuits
Protection of lighting and socket circuits
General electrical infrastructure maintenance
When it may not be suitable
This circuit breaker is not intended for use in DC (direct current) systems or high-voltage industrial applications exceeding its rated voltage specifications. It should not be installed in environments with extreme moisture or corrosive atmospheres without appropriate protective enclosures.
Key specifications
Number of poles: 1
Rated current: 20A
Rated voltage: 230/400V AC
Mounting type: DIN rail
Protection type: Overload and short circuit
How to use
Installation should be performed by a qualified electrician in accordance with local electrical codes. The device is designed to be snapped onto a standard 35mm DIN rail within a distribution board. Once mounted, connect the incoming power supply to the top terminal and the outgoing load circuit to the bottom terminal, ensuring all connections are tightened to the manufacturer's specified torque to prevent overheating.
What to consider before purchase
Verify that the 20A rating matches the requirements of your specific circuit load.
Ensure the installation space within your distribution board is compatible with a 1-pole module.
Confirm that the system voltage is within the 230/400V range.
Usage recommendations
Regularly inspect the circuit breaker for signs of physical damage and ensure that the terminal connections remain tight during periodic maintenance checks. Do not attempt to modify the internal mechanism of the device.

## FAQ

### How much does the Siemens 5SL4120-6 Miniature Circuit Breaker cost, and is it available for purchase?

The price is 10.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 23.07.2026 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. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/1971086/47592698_large.webp