# ABB AUX-C 1Q+1SY Auxiliary Contact with Wires for XT1-XT4 Circuit Breakers

**URL:** https://aio.lv/en/product--abb-1sda066431r1--12469883
**Data updated:** 2026-05-18 09:27 (EEST)
**Category:** Home Appliance Accessories
**Manufacturer:** ABB
**Manufacturer code:** 1SDA066431R1
**EAN:** 8015644692698
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 69.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 57.84 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--abb-1sda066431r1--12469883

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The ABB AUX-C 1Q+1SY auxiliary contact (1SDA066431R1) is a reliable accessory designed for XT1 to XT4 series molded case circuit breakers. Featuring pre-wired connections, this unit provides 1Q+1SY contact configuration for monitoring and signaling status. It is rated for 250Vac/dc operation, ensuring precise feedback in industrial and commercial electrical distribution systems.

## Long description

The ABB AUX-C 1Q+1SY auxiliary contact is a high-quality accessory specifically engineered for integration with ABB Tmax XT1, XT2, XT3, and XT4 molded case circuit breakers. This unit is designed to provide reliable status monitoring and signaling for electrical distribution systems, ensuring that operators receive accurate feedback regarding the position of the circuit breaker contacts. Equipped with pre-wired connections, the device simplifies the installation process and ensures a secure electrical interface within industrial and commercial environments.
Advantages
The primary advantage of this auxiliary contact is its seamless compatibility with the Tmax XT series, allowing for quick and efficient system upgrades. The inclusion of pre-wired leads significantly reduces installation time and minimizes the risk of wiring errors during setup. Its robust construction ensures consistent performance under standard operating conditions, providing a dependable solution for remote monitoring and control applications in complex electrical infrastructures.
Suitable for
Remote status monitoring of circuit breakers
Industrial electrical distribution panels
Commercial building power management systems
Automation and control signaling
When it may not be suitable
This auxiliary contact is designed exclusively for use with ABB Tmax XT1 through XT4 series circuit breakers. It is not compatible with other circuit breaker series or brands. Furthermore, it should not be used in environments that exceed its rated voltage or current specifications, as this may lead to equipment failure or safety hazards.
Key specifications
Contact configuration: 1Q + 1SY
Compatibility: ABB Tmax XT1, XT2, XT3, XT4
Rated voltage: 250V AC/DC
Connection type: Pre-wired
How to use
Installation should be performed by a qualified electrician in accordance with local safety regulations. Before beginning, ensure that the main power supply to the circuit breaker is disconnected. Open the circuit breaker housing according to the manufacturer's manual, insert the auxiliary contact into the designated slot, and secure it firmly. Connect the pre-wired leads to the appropriate control or monitoring circuit terminals. Once installed, verify the contact operation by toggling the circuit breaker and checking the signal status on your monitoring equipment.
What to consider before purchase
Verify that your circuit breaker model is within the XT1 to XT4 range
Ensure the control voltage of your system matches the 250V AC/DC rating
Confirm that there is sufficient space within the panel for the wiring
Usage recommendations
Always perform a functional test after installation to ensure that the auxiliary contact correctly signals the open and closed positions of the circuit breaker before putting the system into full operation.

## Specifications

| Feature | Value |
|---|---|
| Package weight | 107 g |
| Compatible products | Tmax XT |
| Package depth | 140 mm |
| Package height | 60 mm |
| Package width | 110 mm |

## FAQ

### How much does the ABB AUX-C 1Q+1SY Auxiliary Contact for 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 — 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 14.07.2026 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/12469883/68789022_large.webp