# Changeover switch CNC YCBZ-40 4P 40A — 4-pole manual transfer switch, 40 A

**URL:** https://aio.lv/en/product--cnc-el240388--11433228
**Data updated:** 2025-12-30 21:19 (EET)
**Category:** Power Sockets
**Manufacturer:** CNC
**Manufacturer code:** EL240388
**EAN:** 6942034338282
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 21.99 €
**Prices and availability valid until:** 2026-07-14 23:59
**Price without VAT (21%):** 18.17 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--cnc-el240388--11433228

## 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 changeover switch is a 4-pole manual transfer switch rated at 40 A designed to switch supply between two power sources. It provides reliable mechanical switching for distribution circuits, generator transfer, or backup power selection. Suitable for industrial and commercial installations where a compact, easy-to-operate manual changeover is required.

## Long description

CNC YCBZ-40 is a modular 4-pole manual changeover switch rated for 40 A, designed to select and mechanically transfer supply between two power sources. The switch provides three-position operation (1 - 0 - 2) with a common upper contact and a front handle for quick, visible switching. It is suitable for distribution circuits, generator transfer or selection of mains and backup sources in residential, workshop or commercial installations. The device is DIN-rail mountable and conforms to IEC 60947-3 standards.
Advantages
The modular changeover switch offers reliable mechanical switching for AC 50/60 Hz circuits up to AC 400/415 V and a rated current of 40 A. It is compact (72 x 61 x 77 mm), easy to install on a 35 mm DIN rail with a fast clip, and supports cable cross-sections up to 10 mm². The switch meets IEC/EN 60947-3 and relevant EMC requirements and provides defined mechanical and electrical life cycles for predictable maintenance planning.
Suitable for (tasks / use cases)
Manual transfer between mains and generator or UPS
Selection of alternate power sources in distribution boards
Use in residential homes, workshops and business facilities
Compact installations requiring DIN-rail mounting
Key specifications
Manufacturer: CNC, model YCBZ-40 (MPN: EL240388, EAN: 6942034338282)
Poles: 4 (4P)
Contact form: 1 - 0 - 2 (I - 0 - II)
Rated current: 40 A
Rated voltage (Ue): AC 400 V; Maximum voltage: AC 415 V
Frequency: 50/60 Hz
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: 72 x 61 x 77 mm
Protection class: IP20
Standards: IEC 60947-3 / EN 60947-3, category AC-22A
How to use
Install the CNC YCBZ-40 on a 35 mm DIN rail and secure it with the fast clip. Connect the incoming and outgoing conductors to the appropriate terminals, observing the 4-pole configuration and recommended cable cross-section (max. 10 mm²). Use the front handle to move the contact position to 1 (source A), 0 (off), or 2 (source B) as required. Operate the switch only under the conditions specified (AC 50/60 Hz, up to AC 415 V) and ensure the circuit is within the rated current of 40 A.
Usage recommendations
Perform installation and wiring by a qualified electrician. Before switching between power sources, verify both sources and loads are compatible and within specified voltage and frequency ranges. Regularly inspect for secure connections and signs of wear; replace the device if electrical life limits are reached or if visible damage occurs.

## FAQ

### How much does the Changeover switch CNC YCBZ-40 4P 40A cost, and is it available for purchase?

The price is 21.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 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/11433228/66072559_large.webp