# Shelly Pro 3EM energy cost meter AC 120 A 50-60 Hz

**URL:** https://aio.lv/en/product--shelly-allshellypro3em--7934720
**Data updated:** 2025-12-30 06:11 (EET)
**Category:** Power Tools Accessories
**Manufacturer:** Shelly
**Manufacturer code:** ALL\_SHELLY\_PRO\_3EM
**EAN:** 3800235268100
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 116.49 €
**Prices and availability valid until:** 2026-07-22 23:59
**Price without VAT (21%):** 96.27 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--shelly-allshellypro3em--7934720

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.89 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Shelly Pro 3EM is an AC energy cost meter designed for monitoring energy consumption. It supports a maximum current of 120 A and operates within a frequency range of 50 to 60 Hz. With compact dimensions of 94 mm width, 19 mm depth, and 69 mm height, it is suitable for various installations. This device helps in tracking energy costs effectively.

## Long description

Shelly Pro 3EM is a DIN-rail mountable three-phase energy meter for AC systems, designed to monitor energy consumption and instantaneous electrical parameters. It supports up to 120 A per phase and operates at 50–60 Hz. The device reports accumulated energy and real-time voltage, current, and power factor per phase, stores up to 60 days of on-device historical data with 1-minute resolution, and offers Wi‑Fi, LAN and Bluetooth connectivity along with MODBUS and MQTT support for integration into professional installations.
Advantages
The Shelly Pro 3EM provides 1% active energy measurement accuracy (Class B) and supports 4-quadrant measurement of imported and exported active energy for capacitive and inductive loads. It offers simultaneous Ethernet and Wi‑Fi connectivity, secure protocols including mTLS for MQTT and HTTP, inbound/outbound WebSocket and UDP, and MODBUS compatibility for industrial deployments. Built-in scripting (mjS) and webhooks enable local automation and control without cloud dependency, while on-device storage and fast reporting (down to 100 ms with custom firmware) allow detailed monitoring.
Suitable for
Monitoring energy consumption of homes, offices, small factories
Solar and wind generation monitoring and energy flow control
Integration into industrial control systems via MODBUS or MQTT
Local automation and control of Shelly or other Wi‑Fi devices
Key specifications
Model: Shelly Pro 3EM (ALL\_SHELLY\_PRO\_3EM)
Maximum current: 120 A
Frequency: 50–60 Hz
Measurement accuracy: 1% (active energy, Class B)
Connectivity: Wi‑Fi, LAN (Ethernet), Bluetooth, MQTT, WebSocket, UDP, mTLS
Protocols: MODBUS support
Historical data: up to 60 days on-device, 1-minute resolution
Dimensions (W×D×H): 94 × 19 × 69 mm
How to use
Install the Shelly Pro 3EM on a DIN rail and connect the three-phase conductors and the neutral according to local electrical regulations. Configure network settings via the device web interface or supported integration protocol (MQTT, MODBUS or LAN). Use the built-in scripting engine (mjS) and webhooks to create local automation, or connect to a cloud or local server for data collection and visualization. For solar or bidirectional setups, configure exported/imported energy measurement to track produced and consumed energy per phase.
Usage recommendations
Ensure installation is performed by a qualified electrician. Verify the wiring matches the device’s input terminals and that the system current does not exceed 120 A per phase. Use secure network settings (mTLS, passwords) when integrating with remote services and create backups of custom scripts and configuration.

## Specifications

| Feature | Value |
|---|---|
| Weight | 0.062 kg |
| Operating relative humidity (H-H) | 30 - 70 |
| Operating temperature (T-T) | -30 - 40 |
| Ethernet LAN | Yes |
| Height | 69 mm |
| LED indicators | LAN, Wi-Fi, Power |
| Width | 94 mm |
| Depth | 19 mm |
| Maximum current | 120 A |
| Wi-Fi | Yes |
| Frequency range | 50 - 60 |
| Accuracy | 1 % |
| Power source type | AC |
| AC outlet types | Hard Wire 3-wire (3PH + G) |
| Built-in display | No |
| Displayed energy consumption units | W, V, A |

## FAQ

### How much does the Energy cost meter Shelly Pro 3EM cost, and is it available for purchase?

The price is 116.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 827 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 09.07.2026 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, Installment. All transactions are 100% secure and encrypted.

### Can Energy cost meter Shelly Pro 3EM be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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/7934720/59481328_large.webp