# Current Transformer Shelly 120 A White 120 A Nominal Output

**URL:** https://aio.lv/en/product--shelly-120apro3em--11147310
**Data updated:** 2025-12-30 18:24 (EET)
**Category:** Home Automation
**Manufacturer:** Shelly
**Manufacturer code:** 120APro3EM
**EAN:** 3800235266410
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 23.49 €
**Prices and availability valid until:** 2026-07-30 23:59
**Price without VAT (21%):** 19.41 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--shelly-120apro3em--11147310

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 15.07.2026 | free |
| Pickup points | 20.07.2026 | 1.89 EUR |
| Courier delivery to door | 20.07.2026 | 4.99 EUR |

## Summary description

The Shelly 120 A current transformer is designed for measuring electrical currents up to 120 A. It features a white color, a conductor diameter of 17 mm, and dimensions of 31 mm width, 45 mm depth, and 30 mm height. It is compatible with Shelly brand products, making it ideal for home automation and energy monitoring applications.

## Long description

The Shelly 120 A current transformer scales high electrical currents to standardized lower values for accurate measurement. It provides a secondary current precisely proportional to the primary circuit current while presenting a negligible load to the primary. The device is white, supports conductor diameters up to 17 mm and is compatible with Shelly home automation and energy monitoring equipment. Cable length from the CT clamp is 60 cm.
Advantages
The Shelly 120 A transformer enables safe, repeatable current measurement up to 120 A and integrates with Shelly systems for simplified monitoring. Its compact dimensions (31 mm × 45 mm × 30 mm) and lightweight clamp design reduce installation space and impact on the primary circuit. The fixed 60 cm cable provides ready connection to measurement modules.
Suitable for
Home energy monitoring with Shelly controllers
Measuring AC currents up to 120 A in residential or small commercial installations
Integration into automation systems for power usage tracking
Key specifications
Nominal current: 120 A
Conductor diameter: 17 mm
Output: standardized secondary current proportional to primary
Clamp cable length: 60 cm
Dimensions (W×D×H): 31 × 45 × 30 mm
Color: White
Brand compatibility: Shelly
MPN: 120APro3EM
EAN: 3800235266410
How to use
Place the CT clamp around the live conductor whose current you want to monitor, ensuring the conductor fits the 17 mm maximum diameter opening. Route the 60 cm cable to the compatible Shelly measuring input or meter, observing correct polarity and manufacturer wiring instructions. Secure the clamp in place and configure the connected Shelly device to recognize the CT input and set the nominal current to 120 A for accurate readings.
Usage recommendations
Use the transformer only with compatible Shelly devices or meters rated for CT inputs, follow local electrical safety regulations during installation, and ensure the primary conductor is de-energized when mounting the clamp. For consistent measurement results, verify wiring polarity and configure the connected device for a 120 A nominal input.

## Specifications

| Feature | Value |
|---|---|
| Height | 30 mm |
| Width | 31 mm |
| Depth | 45 mm |
| Product colour | White |
| Nominal current output | 120 A |
| Rated current | 120 A |
| Accuracy | 1 % |
| Load resistance | 20 Ω |
| Brand compatibility | Shelly |
| Saturation current | 120 A |
| Core material | Ferrite |
| Conductor diameter | 17 |
| Rated current | 40 mA |

## FAQ

### How much does the Current Transformer Shelly 120 A cost, and is it available for purchase?

The price is 23.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 223 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 15.07.2026 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 Shelly 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 Shelly 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/11147310/64502368_large.webp