# Zamel STM-40-40/24V Modular Installation Contactor 40A 4NO 24V AC/DC

**URL:** https://aio.lv/en/product--zamel-ext10000297--12451339
**Data updated:** 2026-05-18 02:48 (EEST)
**Category:** Power Sockets
**Manufacturer:** ZAMEL
**Manufacturer code:** EXT10000297
**EAN:** 5903669487388
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 50.99 €
**Prices and availability valid until:** 2026-07-19 23:59
**Price without VAT (21%):** 42.14 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--zamel-ext10000297--12451339

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 13.07.2026 | free |
| Pickup points | 16.07.2026 | 1.99 EUR |
| Courier delivery to door | 16.07.2026 | 4.99 EUR |

## Summary description

The Zamel STM-40-40/24V is a high-performance modular installation contactor designed for reliable electrical circuit control. It features a 40A rated current and 4 normally open (4NO) contacts, operating on a 24V AC/DC control voltage. Ideal for industrial and residential electrical distribution systems, this contactor ensures efficient switching and long-term durability in various automation and power management applications.

## Long description

The Zamel STM-40-40/24V modular installation contactor is a robust electrical component engineered for the precise control of power circuits in both residential and industrial environments. With a rated current of 40A and four normally open (4NO) contacts, this device provides reliable switching performance for demanding electrical loads. It is designed for mounting on standard DIN rails, ensuring seamless integration into modern electrical distribution boards and automation cabinets.
Advantages
This contactor stands out due to its versatile control voltage compatibility, supporting both 24V AC and DC signals, which simplifies integration into diverse control systems. The modular design facilitates quick and space-efficient installation within standard distribution panels. Built with high-quality materials, the unit offers excellent durability and consistent operational reliability, minimizing the need for maintenance in continuous duty applications. Its 4NO contact configuration allows for the simultaneous switching of multiple phases or independent circuits, providing flexibility in power management.
Suitable for
Industrial automation and control systems
Residential and commercial lighting control
Heating and ventilation systems
Power distribution management
Switching of high-current electrical loads
When it may not be suitable
This device is not intended for applications requiring a control voltage other than 24V AC/DC. It should not be used in environments with extreme moisture, dust, or corrosive gases unless housed in a suitable protective enclosure.
Key specifications
Rated current: 40A
Contact configuration: 4 normally open (4NO)
Control voltage: 24V AC/DC
Mounting type: DIN rail
Modular design for standard distribution boards
How to use
The contactor should be installed by a qualified professional in accordance with local electrical regulations. Mount the device onto a standard 35mm DIN rail within a distribution board. Connect the power supply lines to the main power terminals and the 24V control signal to the coil terminals. Ensure all connections are tightened securely to prevent overheating. Once installed, the device will automatically switch the main circuit upon receiving the 24V control signal.
What to consider before purchase
Verify that your control system provides a 24V AC or DC signal.
Ensure the 40A rated current is sufficient for your specific load requirements.
Check the available space on your DIN rail within the distribution cabinet.
Confirm that the 4NO contact configuration meets your circuit switching needs.
Usage recommendations: Regularly inspect the terminal connections for tightness and ensure the device remains free of debris to maintain optimal performance and safety.

## FAQ

### How much does the Zamel STM-40-40/24V Modular Installation Contactor cost, and is it available for purchase?

The price is 50.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 12 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 13.07.2026 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/12451339/68754040_large.webp