# FF ST-1NO-1NC Auxiliary Contact 1NO+1NC for TH Rail Mounting

**URL:** https://aio.lv/en/product--ff-st-1no-1nc--12444776
**Data updated:** 2026-05-18 02:46 (EEST)
**Category:** Home & DIY Accessories
**Manufacturer:** FF
**Manufacturer code:** ST-1NO-1NC
**EAN:** 5902431675275
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 14.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 12.39 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--ff-st-1no-1nc--12444776

## 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 FF ST-1NO-1NC is an auxiliary contact module designed for mounting on a standard TH rail. It features one normally open (NO) and one normally closed (NC) contact configuration. This device is used to expand the switching capabilities of electrical control systems, providing reliable signaling and feedback in industrial or residential automation setups.

## Long description

The FF ST-1NO-1NC auxiliary contact is a precision-engineered module designed to enhance the functionality of electrical control systems. It is specifically built for seamless integration onto standard TH mounting rails, making it a versatile component for both industrial and residential automation panels. By providing one normally open (NO) and one normally closed (NC) contact, this device allows for reliable signaling, status monitoring, and feedback loops within complex electrical circuits.
Advantages
This auxiliary contact module offers exceptional reliability and ease of installation due to its standardized design for TH rail mounting. Its compact form factor ensures it occupies minimal space within distribution boards while providing essential switching capabilities. The dual-contact configuration provides flexibility for various control logic requirements, ensuring that users can easily integrate feedback mechanisms into their existing electrical infrastructure without the need for extensive rewiring or complex modifications.
Suitable for
Industrial automation control panels
Residential smart home electrical systems
Monitoring and signaling circuits
Expanding the switching capacity of contactors or circuit breakers
When it may not be suitable
This device is not intended for switching high-power loads directly, as it is designed specifically for control and signaling purposes. It may also be unsuitable for environments with extreme vibration or moisture levels that exceed the standard protection ratings for modular DIN-rail equipment.
Key specifications
Contact configuration: 1 normally open (NO) and 1 normally closed (NC)
Mounting type: Standard TH rail
Application: Auxiliary signaling and control
Compatibility: Modular electrical distribution systems
How to use
To install the FF ST-1NO-1NC, ensure the power supply to the main electrical system is disconnected. Snap the module onto the TH rail alongside the primary switching device it is intended to monitor. Connect the control wires to the designated terminals according to your circuit diagram, ensuring that the NO and NC contacts are wired to match your specific logic requirements. Once installed, verify the connections and perform a functional test before restoring power to the system.
What to consider before purchase
Verify the compatibility of the auxiliary contact with your existing contactor or circuit breaker model.
Ensure there is sufficient physical space on the TH rail within your distribution board.
Confirm that the electrical load of your signaling circuit does not exceed the rated capacity of the auxiliary contacts.
Usage recommendations
Always ensure that the installation is performed by a qualified professional in accordance with local electrical safety regulations. Regularly inspect the terminal connections to ensure they remain secure and free from oxidation.

## FAQ

### How much does the FF ST-1NO-1NC Auxiliary Contact cost, and is it available for purchase?

The price is 14.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 26 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 FF 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 FF 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/12444776/68748007_large.webp