# Zamel STM-40-31 Modular Installation Contactor 40A 3NO+1NC 230V AC

**URL:** https://aio.lv/en/product--zamel-ext10000298--12453455
**Data updated:** 2026-05-18 02:52 (EEST)
**Category:** Power Sockets
**Manufacturer:** ZAMEL
**Manufacturer code:** EXT10000298
**EAN:** 5903669487395
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.49 €
**Prices and availability valid until:** 2026-07-13 23:59
**Price without VAT (21%):** 31.81 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--zamel-ext10000298--12453455

## 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 Zamel STM-40-31 is a modular installation contactor designed for reliable electrical circuit switching. It features a 40A rated current, 230V AC coil voltage, and a 3NO+1NC contact configuration. This device is ideal for controlling lighting, heating, and ventilation systems in residential and commercial electrical installations, ensuring efficient power management and long-term operational durability.

## Long description

The Zamel STM-40-31 modular installation contactor is a high-performance electrical switching device engineered for demanding residential and commercial applications. Designed for mounting on standard DIN rails, this contactor provides reliable control over high-current electrical circuits, ensuring stable operation and safety in power distribution systems. With its robust construction and precise engineering, it serves as an essential component for automated electrical management.
Advantages
This contactor offers exceptional operational reliability and durability, making it suitable for frequent switching cycles in various electrical environments. Its modular design allows for seamless integration into existing distribution boards, saving space and simplifying installation processes. The device is built to handle significant electrical loads while maintaining low power consumption, contributing to the overall efficiency of the electrical installation. Furthermore, the contact configuration provides versatile control options for complex circuit setups.
Suitable for
Controlling lighting systems in large buildings
Managing heating and cooling equipment
Operating ventilation and air conditioning units
Switching high-power electrical loads in residential distribution boards
When it may not be suitable
This device is not intended for use in environments with extreme moisture, high levels of dust, or corrosive gases, as these conditions may compromise the internal components. It is also not suitable for applications requiring DC switching, as it is specifically designed for 230V AC systems.
Key specifications
Rated current: 40A
Coil voltage: 230V AC
Contact configuration: 3NO (Normally Open) + 1NC (Normally Closed)
Mounting type: DIN rail
Modular design for standard enclosures
How to use
The contactor should be installed by a qualified professional in accordance with local electrical regulations. It is designed to be snapped onto a standard 35mm DIN rail within a distribution cabinet. Connect the control circuit to the coil terminals and the load circuit to the main power terminals, ensuring that all connections are tightened securely to prevent overheating. Verify the wiring against the schematic before energizing the system.
What to consider before purchase
Ensure the 40A rated current is sufficient for your specific load requirements
Verify that your control system provides a 230V AC signal
Check the available space in your distribution board for modular equipment
Confirm the contact configuration matches your circuit design needs
Usage recommendations
Regularly inspect the contactor for signs of wear or loose connections during routine maintenance of the electrical panel. Ensure the surrounding environment remains within the specified temperature range to maintain optimal performance and longevity.

## FAQ

### How much does the Zamel STM-40-31 Modular Installation Contactor 40A cost, and is it available for purchase?

The price is 38.49 € (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 ZAMEL 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 ZAMEL 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/12453455/68755997_large.webp