# Changeover switch CNC YCBZ-40 3P 40A manual transfer switch for three-phase circuits

**URL:** https://aio.lv/en/product--cnc-el240371--11431736
**Data updated:** 2025-12-30 21:19 (EET)
**Category:** Power Sockets
**Manufacturer:** CNC
**Manufacturer code:** EL240371
**EAN:** 6942034338275
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 16.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 14.04 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cnc-el240371--11431736

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 22.06.2026 | free |
| Pickup points | 29.06.2026 | 1.99 EUR |
| Courier delivery to door | 29.06.2026 | 4.99 EUR |

## Summary description

CNC YCBZ-40 is a manual changeover switch designed for three-phase electrical systems with a 40 A rated current and 3 poles. It allows safe transfer between power sources, suitable for generators, mains backup and industrial distribution panels. The compact, robust mechanism provides reliable switching, clear positions, and straightforward installation for maintenance and emergency power management.

## Long description

CNC YCBZ-40 is a modular 3-pole manual changeover switch with a 40 A rated current and three contact positions (1‑0‑2). It is designed for switching, making and breaking loads in AC 50/60 Hz, 230/400 V circuits and enables reliable transfer between two power sources such as mains and backup generator or UPS. The device mounts on a 35 mm DIN rail and complies with IEC/EN 60947-3 and relevant EMC requirements.
Advantages
The changeover switch provides a compact, DIN-rail mountable solution for quick manual transfer of three-phase loads. It offers clear mechanical positions and a common upper contact for secure switching, supports up to 40 A rated current, and meets international switch-disconnector standards. The unit’s construction allows straightforward installation and maintenance in residential, workshop or small commercial electrical panels.
Suitable for
Manual transfer between mains and generator or UPS in three-phase systems
Use in residential electrical panels and small commercial or workshop distribution boards
Applications requiring a compact DIN-rail mounted switch-disconnector for maintenance or emergency power changeover
Key specifications
Product: Changeover switch CNC YCBZ-40 3P 40A (manual transfer switch)
Poles: 3
Rated current (Ie): 40 A
Rated voltage (Ue): AC 400 V; maximum voltage AC 415 V
Frequency: 50/60 Hz
Contact form: I - 0 - II (1‑0‑2)
Mechanical life: 8500 cycles; Electrical life: 1500 cycles
Mounting: DIN rail EN60715 (35 mm)
Cable cross-section: up to 10 mm²
Operating temperature: -5 °C to +40 °C
Dimensions: 54 x 61 x 77 mm
Protection class: IP20
Colour: white
Standards: IEC 60947-3 / EN 60947-3, category AC-22A
How to use
Install the switch on a standard 35 mm DIN rail inside the distribution enclosure and connect supply and load conductors to the appropriate terminals following the wiring diagram and local electrical codes. Operate the external handle to select position 1, 0 or 2 for the desired power source; ensure the switch is used only under the specified rated conditions. Perform isolation and verify dead state before maintenance work.
Usage recommendations
Use the CNC YCBZ-40 in environments within the specified temperature range and with conductors not exceeding 10 mm². Verify compatibility with connected generators or UPS systems and respect the rated current and voltage to ensure safe operation and longevity.

## FAQ

### How much does the Changeover switch CNC YCBZ-40 3P 40A cost, and is it available for purchase?

The price is 16.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 1 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 22.06.2026 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 CNC 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 CNC 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/11431736/66069870_large.webp