# Zamel STM-25-40/S Modular Installation Contactor with Manual Control, 25A, 4NO, 230V AC

**URL:** https://aio.lv/en/product--zamel-0001-00018-42477--12464792
**Data updated:** 2026-05-18 09:42 (EEST)
**Category:** Control Systems
**Manufacturer:** ZAMEL
**Manufacturer code:** 0001-00018-42477
**EAN:** 5903669493310
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 28.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 23.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--zamel-0001-00018-42477--12464792

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 17.07.2026 | free |
| Pickup points | 22.07.2026 | 1.89 EUR |
| Courier delivery to door | 22.07.2026 | 4.99 EUR |

## Summary description

The Zamel STM-25-40/S is a modular installation contactor designed for reliable electrical circuit switching. It features a 25A rated current, 4 normally open (4NO) contacts, and operates on a 230V AC control voltage. Equipped with a manual control switch, this device is ideal for industrial and residential automation systems, providing efficient control of lighting, heating, and ventilation equipment.

## Long description

The Zamel STM-25-40/S is a high-performance modular installation contactor engineered for the reliable switching of electrical circuits in both residential and industrial environments. This device is designed to handle a rated current of 25A and features four normally open (4NO) contacts, making it a robust solution for managing power distribution. A key feature of this model is the integrated manual control switch, which allows users to override automatic operations for maintenance or testing purposes, ensuring maximum flexibility in electrical system management.
Advantages
The primary benefit of the Zamel STM-25-40/S lies in its modular design, which allows for seamless integration into standard distribution boards and electrical cabinets. The inclusion of manual control provides an essential layer of operational convenience, enabling direct intervention without the need for complex control signals. Furthermore, the contactor is built for durability and consistent performance under standard 230V AC operating conditions, ensuring long-term reliability for demanding automation tasks.
Suitable for
Control of lighting systems in commercial and residential buildings
Management of heating and ventilation equipment
Switching of single-phase and three-phase electrical loads
Industrial automation and control panel applications
When it may not be suitable
This contactor is not intended for use in environments with extreme moisture, high levels of dust, or corrosive gases unless housed in a suitable protective enclosure. It is also not suitable for applications requiring DC switching or loads exceeding the 25A rated current capacity.
Key specifications
Rated current: 25A
Contact configuration: 4 normally open (4NO)
Control voltage: 230V AC
Mounting type: Modular (DIN rail)
Manual control: Integrated switch
How to use
The Zamel STM-25-40/S should be installed by a qualified electrician onto a standard DIN rail within a distribution board. Once mounted, the control circuit wires are connected to the coil terminals, and the load circuit wires are connected to the power terminals. The manual switch on the front of the device can be toggled to manually engage or disengage the contacts, providing a simple way to test the connected equipment or perform maintenance without activating the control signal.
What to consider before purchase
Ensure the control voltage of your system matches the 230V AC requirement.
Verify that the 25A rated current is sufficient for the total load of your connected devices.
Confirm that the 4NO contact configuration meets your specific circuit switching needs.
Check available space in your distribution board for modular DIN rail mounting.
Usage recommendations
Always ensure the power supply is disconnected before performing any wiring or maintenance on the contactor. Regularly inspect the terminals for tightness to prevent overheating and ensure optimal electrical conductivity.

## FAQ

### How much does the Zamel STM-25-40/S Modular Installation Contactor 25A 4NO 230V cost, and is it available for purchase?

The price is 28.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 17.07.2026 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/12464792/68766420_large.webp