# Cam switch 0-star-delta 3P 40A Elektromet Łuk 40-21 (924009)

**URL:** https://aio.lv/en/product--elektromet-924009--12397596
**Data updated:** 2026-04-27 22:30 (EEST)
**Category:** Power Sockets
**Manufacturer:** Elektromet
**Manufacturer code:** 924009
**EAN:** 5906197483051
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 51.49 €
**Prices and availability valid until:** 2026-07-15 23:59
**Price without VAT (21%):** 42.55 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--elektromet-924009--12397596

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 07.07.2026 | free |
| Pickup points | 10.07.2026 | 1.99 EUR |
| Courier delivery to door | 10.07.2026 | 4.99 EUR |

## Summary description

Electromet Łuk 40-21 cam (rotary) switch configured for 0-star-delta (0- star–triangle) motor switching. Three-pole 3P device rated for 40 A, model 924009, designed to change motor connection between star and delta or to set the 0 position. Suitable for industrial motor control panels, motor starters and machinery where reliable manual or automatic changeover is required.

## Long description

Electromet Łuk 40-21 cam switch configured for 0–star–delta (0–star–triangle) motor switching. This three-pole 40 A cam (rotary) switch is intended for changing the connection of three-phase motors between star and delta configurations or for selecting an off/0 position. It is suitable for mounting in motor control panels, motor starters and industrial machinery where a compact mechanical solution for manual or automatic changeover is required.
Advantages
The cam switch provides a robust mechanical switching mechanism designed for frequent operation and clear tactile feedback. Its three-pole construction supports standard three-phase motor wiring and the 40 A rating accommodates a range of small to medium power motors. The 0 position allows safe isolation or a neutral setting between star and delta arrangements, simplifying commissioning and maintenance tasks.
Suitable for
 Manual or semi-automatic motor starters in industrial environments
 Applications requiring star–delta (Y–Δ) changeover for three-phase motors
 Control panels where a dedicated off/0 position is needed between switching states
 Machinery with straightforward mechanical switching requirements and limited space
When it may not be suitable
This cam switch is a mechanical device and may not be appropriate where fully electronic or soft-start motor control is required, such as variable frequency drives (VFDs) or electronic soft starters that provide smoother torque and adjustable ramp profiles. It also may not suit installations that demand higher continuous current ratings than 40 A or where contactor-based interlocking and remote motor protection are mandatory.
Key specifications
 Poles: 3-pole (three-phase)
 Rated current: 40 A
 Switching configuration: 0–star–delta (0–Y–Δ)
 Actuation: cam (rotary) mechanical switch
 Intended use: motor connection changeover (star/delta) and off/0 position
 Mounting: panel/machine mounting suitable for control panels and starters
How to use
Install the cam switch in an appropriate cut-out in the control panel or starter enclosure following applicable electrical standards and safety practices. Wire the three incoming and three outgoing phase conductors to the corresponding terminals according to the motor wiring diagram: one set for star, one for delta and the neutral/off connections for the 0 position. Ensure proper torque on terminal screws and provide overload protection, interlocks or auxiliary contacts externally if required. Operate the rotary handle to select 0, star or delta positions only when the motor is stopped or under conditions allowed by the control scheme to avoid mechanical stress and electrical arcing.
What to consider before purchase
 Verify that a 40 A rated mechanical switch meets the motor's starting and running current requirements
 Confirm that a mechanical star–delta changeover is compatible with your control strategy and protection devices
 Check available panel space and mounting cut-out dimensions to ensure fitment
 Determine whether additional contactors, timers or interlocks are needed for safe and automated operation
Usage recommendations
Use the cam switch as part of a complete motor control arrangement: include proper overload protection, correctly rated fuses or breakers, and mechanical interlocks where necessary. For frequent switching or precise motor control, evaluate electronic alternatives. Regularly inspect terminals and contacts for tightness and signs of wear, and perform switching operations according to the machine’s safety procedures.

## FAQ

### How much does the Cam switch 3P 40A Elektromet Łuk 40-21 cost, and is it available for purchase?

The price is 51.49 € (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 07.07.2026 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 Elektromet 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 Elektromet 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/12397596/68680943_large.webp