# ABB AUX-C 1Q+1SY 24VDC Auxiliary Contacts for Tmax XT1-XT4 Circuit Breakers

**URL:** https://aio.lv/en/product--abb-1sda066446r1--12448207
**Data updated:** 2026-05-18 02:46 (EEST)
**Category:** Computer Component Accessories
**Manufacturer:** ABB
**Manufacturer code:** 1SDA066446R1
**EAN:** 8015644692759
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 69.99 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 57.84 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--abb-1sda066446r1--12448207

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 06.07.2026 | free |
| Pickup points | 09.07.2026 | 1.99 EUR |
| Courier delivery to door | 09.07.2026 | 4.99 EUR |

## Summary description

The ABB AUX-C 1Q+1SY 24VDC auxiliary contact block is designed for Tmax XT1, XT2, XT3, and XT4 molded case circuit breakers. This accessory provides reliable signaling of the circuit breaker status, featuring one changeover contact for position and one for trip indication. It operates at 24V DC and is essential for monitoring and control systems in industrial electrical installations, ensuring precise feedback on breaker operations.

## Long description

The ABB AUX-C 1Q+1SY 24VDC auxiliary contact block is a precision-engineered accessory designed specifically for integration with ABB Tmax XT1, XT2, XT3, and XT4 molded case circuit breakers. This component serves as a critical interface for monitoring the operational state of the circuit breaker, providing reliable electrical feedback to control systems. By utilizing a 24V DC signal, it ensures seamless communication within industrial electrical panels and automation setups.
Advantages
This auxiliary contact block offers high reliability and durability, consistent with the standards expected from ABB electrical components. The inclusion of both a position contact and a trip indication contact allows for comprehensive monitoring of the breaker status, which is vital for maintaining safety and operational efficiency in complex electrical systems. Its compact design ensures that it integrates smoothly into the existing breaker housing without requiring significant additional space, facilitating easier installation and maintenance processes.
Suitable for
Industrial automation and control systems
Remote monitoring of circuit breaker status
Electrical distribution panels requiring trip signaling
Safety-critical power management applications
When it may not be suitable
This auxiliary contact is specifically calibrated for 24V DC systems and should not be used in circuits with different voltage requirements or AC applications unless explicitly specified by the manufacturer. It is also incompatible with circuit breaker series outside of the Tmax XT1-XT4 range.
Key specifications
Voltage rating: 24V DC
Contact configuration: 1Q (position) + 1SY (trip indication)
Compatibility: ABB Tmax XT1, XT2, XT3, and XT4 molded case circuit breakers
Function: Status and trip signaling
How to use
Installation should be performed by a qualified electrician in accordance with the circuit breaker manual. The contact block is inserted into the designated accessory slot on the Tmax XT breaker. Ensure the power is disconnected before attempting installation. Once seated, the electrical connections for the 24V DC signal should be wired to the corresponding terminals to enable the monitoring functionality.
What to consider before purchase
Verify the specific model of your Tmax XT circuit breaker
Ensure your control system operates on a 24V DC supply
Confirm that the required signaling logic matches the 1Q+1SY configuration
Usage recommendations
Always verify the wiring diagram provided with your specific circuit breaker model to ensure correct terminal assignment and prevent damage to the auxiliary contacts or the control system.

## FAQ

### How much does the ABB AUX-C 1Q+1SY 24VDC Auxiliary Contacts for Tmax XT1-XT4 cost, and is it available for purchase?

The price is 69.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 3 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 06.07.2026 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/12448207/68751209_large.webp