# Promet W0-NEF30-TPA 2X S 2-Position Selector Switch, 30mm Knob, Black, 2NO, Non-Spring Return

**URL:** https://aio.lv/en/product--promet-w0-nef30-tpa-2x-s--12458879
**Data updated:** 2026-05-18 09:29 (EEST)
**Category:** Control Systems
**Manufacturer:** Promet
**Manufacturer code:** W0-NEF30-TPA 2X S
**EAN:** 5900103069612
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 37.99 €
**Prices and availability valid until:** 2026-08-24 23:59
**Price without VAT (21%):** 31.40 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--promet-w0-nef30-tpa-2x-s--12458879

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 10.08.2026 | free |
| Pickup points | 13.08.2026 | 1.79 EUR |
| Courier delivery to door | 13.08.2026 | 4.99 EUR |

## Summary description

The Promet W0-NEF30-TPA 2X S is a robust 2-position selector switch featuring a 30mm black knob. Designed for industrial control panels, this switch includes 2 normally open (2NO) contacts and operates without a spring return mechanism, ensuring stable positioning. It is ideal for manual control of electrical circuits, providing reliable performance and durability in demanding automation environments.

## Long description

The Promet W0-NEF30-TPA 2X S is a high-quality 2-position selector switch engineered for precise manual control in industrial automation systems. Featuring a durable 30mm black knob, this component is designed to provide reliable switching operations within control panels and electrical cabinets. The non-spring return mechanism ensures that the switch remains in the selected position until manually adjusted, offering consistent state management for connected circuits.
Advantages
This selector switch stands out due to its robust construction and ergonomic design, which facilitates easy operation even in demanding industrial environments. The inclusion of two normally open contacts allows for versatile integration into various control logic configurations. Its non-spring return functionality is particularly beneficial for applications requiring a maintained state, reducing the risk of accidental switching and ensuring operational stability throughout the workday.
Suitable for
Industrial control panels
Automation systems and machinery
Electrical circuit management
Manual override controls
This switch may not be suitable for applications that require an automatic return to a neutral position, such as momentary pulse triggers or safety-critical functions where the switch must disengage immediately upon release. It is also not intended for high-voltage power distribution or outdoor environments without appropriate protective enclosure ratings.
Key specifications
Switch type: 2-position selector
Knob diameter: 30mm
Contact configuration: 2 Normally Open (2NO)
Operation mode: Non-spring return (maintained)
Color: Black
To use the Promet selector switch, mount it securely into a standard 30mm panel cutout. Ensure that the electrical connections are made to the two normally open contact blocks according to your circuit diagram. Once installed, rotate the knob to toggle between the two positions. The switch will stay in the chosen position until it is manually turned to the alternative setting.
What to consider before purchase
Verify that the 30mm mounting diameter matches your existing panel layout.
Confirm that your control system requires a maintained (non-spring return) action.
Ensure the 2NO contact configuration is compatible with your wiring requirements.
For optimal performance and longevity, ensure that the switch is kept free of excessive dust and debris. Regularly inspect the electrical terminals to confirm that all connections remain tight and free from oxidation.

## FAQ

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

The price is 37.99 € (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 10.08.2026 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/12458879/68760990_large.webp