# Promet 3-Position Selector Switch, 30mm Black Knob, 2NO Contacts, Maintained Action

**URL:** https://aio.lv/en/product--promet-w0-nef30-tpc-2x-s--12480083
**Data updated:** 2026-05-22 07:19 (EEST)
**Category:** Control Systems
**Manufacturer:** Promet
**Manufacturer code:** W0-NEF30-TPC 2X S
**EAN:** 5900103071011
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 50.49 €
**Prices and availability valid until:** 2026-08-01 23:59
**Price without VAT (21%):** 41.73 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--promet-w0-nef30-tpc-2x-s--12480083

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 21.07.2026 | free |
| Pickup points | 24.07.2026 | 1.89 EUR |
| Courier delivery to door | 24.07.2026 | 4.99 EUR |

## Summary description

The Promet 3-position selector switch features a 30mm black knob and 2NO contact blocks. Designed for industrial control panels, this maintained action switch allows for reliable manual operation in three distinct positions. It is suitable for various electrical automation systems requiring durable and precise switching control.

## Long description

The Promet 3-position selector switch is a robust control component designed for industrial automation and electrical panel integration. Featuring a 30mm black knob, this switch provides a clear and ergonomic interface for operators to toggle between three distinct operational states. The device is equipped with 2NO contact blocks, ensuring reliable electrical connectivity for your control circuits. Its maintained action mechanism allows the switch to remain in the selected position until manually moved, providing consistent status indication for machinery and automated systems.
Advantages
This selector switch stands out due to its durable construction, which is specifically engineered to withstand the rigors of industrial environments. The 30mm knob offers a comfortable grip, facilitating precise manual control even when wearing protective gloves. By utilizing a maintained action design, the switch eliminates the need for constant operator pressure, thereby enhancing workflow efficiency in complex control panels. The inclusion of high-quality 2NO contacts ensures stable performance and long-term reliability in demanding electrical applications.
Suitable for
Industrial control panels and automation cabinets
Manual selection of operational modes in machinery
Electrical systems requiring multi-position switching
Control circuits for motors and lighting systems
This switch may not be suitable for applications requiring momentary or spring-return functionality, as the maintained action mechanism requires manual intervention to change states. It is also not intended for high-voltage power distribution circuits or environments where specialized explosion-proof ratings are mandatory.
Key specifications
Switch type: 3-position selector
Actuator: 30mm black knob
Contact configuration: 2NO (Normally Open)
Action type: Maintained
Mounting diameter: 30mm
To install the switch, mount it into a standard 30mm panel cutout and secure it using the provided locking nut. Connect the electrical wires to the 2NO contact blocks according to your control circuit diagram. Ensure that the power supply is disconnected before performing any wiring to prevent electrical hazards. Once installed, verify that the knob rotates smoothly between all three positions and that the contacts engage correctly.
What to consider before purchase
Verify that the 30mm mounting hole size matches your existing panel layout
Ensure that the 2NO contact configuration meets the requirements of your control logic
Confirm that a maintained action switch is appropriate for your specific safety and operational needs
Usage recommendations
For optimal longevity and performance, ensure that the switch is protected from excessive dust, moisture, and corrosive chemicals. Periodically inspect the contact blocks for signs of wear and ensure that all terminal connections remain tight to prevent overheating.

## FAQ

### How much does the Promet 3-Position Selector Switch W0-NEF30-TPC 2X S cost, and is it available for purchase?

The price is 50.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 4 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 21.07.2026 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 Promet 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 Promet 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/12480083/68803325_large.webp