# ABB SZ203-B20 Miniature Circuit Breaker 3P 20A B-Curve 6kA

**URL:** https://aio.lv/en/product--abb-2cds253025r0205--12464535
**Data updated:** 2026-05-18 09:33 (EEST)
**Category:** Power Sockets
**Manufacturer:** ABB
**Manufacturer code:** 2CDS253025R0205
**EAN:** 4016779996440
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 20.49 €
**Prices and availability valid until:** 2026-07-28 23:59
**Price without VAT (21%):** 16.93 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--abb-2cds253025r0205--12464535

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 16.07.2026 | free |
| Pickup points | 21.07.2026 | 1.89 EUR |
| Courier delivery to door | 21.07.2026 | 4.99 EUR |

## Summary description

The ABB SZ203-B20 is a 3-pole miniature circuit breaker designed for reliable electrical circuit protection. It features a 20A rated current, B-type tripping characteristic, and a 6kA breaking capacity. This device is suitable for residential and commercial electrical installations to prevent overloads and short circuits, ensuring safety and operational continuity in AC power systems.

## Long description

The ABB SZ203-B20 is a high-quality 3-pole miniature circuit breaker engineered to provide dependable protection for electrical circuits in various environments. This device is designed to monitor current flow and automatically disconnect power in the event of an overload or short circuit, thereby safeguarding electrical infrastructure and connected equipment from damage. With its robust construction and precise tripping mechanism, it ensures consistent performance and safety in AC power distribution systems.
Advantages
This circuit breaker offers exceptional reliability due to its advanced B-curve tripping characteristic, which is specifically optimized for applications where low-level short-circuit protection is required. Its 3-pole configuration allows for the simultaneous protection of three-phase circuits, making it a versatile component for modern electrical panels. The 6kA breaking capacity provides sufficient headroom for typical residential and light commercial fault conditions, ensuring that the device can safely interrupt high currents without failure. Furthermore, the compact design facilitates easy installation in standard distribution boards, saving valuable space while maintaining high safety standards.
Suitable for
Residential electrical distribution boards
Commercial building power systems
Protection of lighting circuits
General-purpose three-phase electrical installations
This device may not be suitable for industrial applications requiring higher breaking capacities exceeding 6kA or for circuits with high inrush currents that might cause nuisance tripping with a B-curve characteristic. It is also not intended for use in DC power systems unless specifically rated for such applications.
Key specifications
Number of poles: 3
Rated current: 20A
Tripping characteristic: B-curve
Breaking capacity: 6kA
System voltage: AC
To install the ABB SZ203-B20, ensure the main power supply is disconnected. The device is designed for mounting onto a standard DIN rail within an electrical enclosure. Secure the breaker firmly onto the rail and connect the incoming and outgoing supply cables to the appropriate terminals, ensuring that all connections are tightened to the manufacturer's specified torque settings to prevent overheating. Once installed, verify the wiring and restore power to test the circuit functionality.
What to consider before purchase
Verify that the 20A rating matches the requirements of your circuit load
Ensure the B-curve characteristic is appropriate for your specific equipment
Confirm that the 6kA breaking capacity meets local electrical safety standards
Check the available space in your distribution board for a 3-pole device
Always consult with a qualified electrician to ensure that the circuit breaker is correctly sized and installed in accordance with local electrical codes and safety regulations.

## FAQ

### How much does the ABB SZ203-B20 Miniature Circuit Breaker 3P 20A cost, and is it available for purchase?

The price is 20.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 16.07.2026 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 ABB 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 ABB 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/12464535/68766174_large.webp