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header-product Energy cost meter AC Shelly Pro 3EM-400A 400 A 50-60 Hz
334.49 €

Energy cost meter AC Shelly Pro 3EM-400A 400 A 50-60 Hz

Energy cost meter AC Shelly Pro 3EM-400A Photo 1
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Energy cost meter AC Shelly Pro 3EM-400A 400 A 50-60 Hz

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Energy cost meter AC Shelly Pro 3EM-400A 400 A 50-60 Hz

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Short description

The Shelly Pro 3EM-400A is an AC energy cost meter designed for monitoring energy consumption. It supports a maximum current of 400 A and operates within a frequency range of 50 to 60 Hz. With compact dimensions of 19 mm width, 69 mm depth, and 94 mm height, it is suitable for various installations. This meter provides accurate readings to help manage energy costs effectively.
Available at price 334.49 €: 300 pcs.
Total available for order: 403 pcs.
Warranty: 2 Years
SKU: 10490258
Manufacturer: Shelly
free shipment

Cheapest delivery:

Unisend LV

Pick-up points

Unisend LV

Cost

1.79 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
10.08.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
13.08.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 0.06 kg)
Parcel couriers
Unisend LV / Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
13.08.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.79 €
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3 mth. х 111.5 €

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All payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay, Installment
36 months installment: from 9.29 euros per month
Together cheaper
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Product information

Description

Shelly Pro 3EM-400 is a DIN-rail mountable three-phase energy meter with Wi‑Fi, Bluetooth and LAN connectivity. It reports accumulated active energy as well as instantaneous voltage, current and power factor per phase in real time. The device offers 1% active energy measurement accuracy, 60 days of on-device historical data with 1‑minute resolution per phase, and scripting capabilities for advanced monitoring and automation. Its compact form factor (19 mm width, 69 mm depth, 94 mm height) and 400 A maximum current rating make it suitable for residential and small commercial installations.

Advantages

The Shelly Pro 3EM-400 provides precise three-phase monitoring with 1% accuracy for active energy and real-time per-phase measurements of voltage, current and power factor. Built-in Wi‑Fi, Bluetooth and LAN connectivity enable flexible integration into local networks and professional systems. On-device historical storage for up to 60 days with 1‑minute granularity and scripting support allow detailed analysis and customized automation without immediate cloud dependency. DIN-rail form factor and compact dimensions simplify installation inside distribution boards.

Suitable for

  • Monitoring household energy consumption and individual appliances
  • Measuring electrical circuits in small businesses and offices
  • Integration into professional automation and energy management systems
  • Retrofit installations inside DIN-rail electrical panels

Key specifications

  • Model: Shelly Pro 3EM-400 (MPN 217050, EAN 3800235268117)
  • Type: Three-phase AC energy meter, DIN-rail mountable
  • Max current: 400 A
  • Frequency: 50–60 Hz
  • Measurement accuracy: 1% (active energy)
  • Connectivity: Wi‑Fi, Bluetooth, LAN
  • Historical data: Up to 60 days on-device, 1-minute resolution per phase
  • Dimensions: 19 mm (W) × 69 mm (D) × 94 mm (H)
  • Weight: 0.062 kg

How to use

Install the Shelly Pro 3EM-400 on a standard DIN rail inside the distribution board and connect the three-phase conductors following local electrical regulations and the product wiring diagram. Connect the device to the local network via Wi‑Fi or LAN for remote monitoring and configuration, or use Bluetooth for initial setup. Use the Shelly management interface to view real-time readings, review historical data, configure scripts and set up integrations with home automation or energy management platforms.

Usage recommendations

Follow applicable national and local electrical codes when installing and wiring the meter. Ensure connections are made by a qualified electrician and verify the device is rated for the installation's maximum current. Regularly back up any required historical data if long-term storage is needed beyond the on-device 60-day period.

Specifications

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.062 kg
All features
Flash memory:
16 MB
Operating relative humidity (H-H):
30 - 70
Material: The material from which a thing is or can be made e.g. wood, plastic.
Plastic
Operating temperature (T-T): The minimum and maximum temperatures at which the product can be safely operated.
-20 - 40
Bluetooth version: The type of bluetooth technology in the product e.g. Bluetooth Smart (v4.0).
4.2
Ethernet LAN: An Ethernet LAN (Local Area Network) interface is present, for a wired conection via a cable.
Yes
Wall mountable: The product can be mounted on (attached to ) a wall.
Yes
Bluetooth: Bluetooth is a low-power radio technology developed to replace the cables and wires currently used to link or connect electronic devices such as personal computers, printers, and a wide variety of handheld devices including mobile phones. Because it uses radio-wave connectivity, a Bluetooth-enabled device has a constant, established connection to whatever browser it uses. This saves the user the trouble of logging on to check for emails or news updates, for example.
Yes
Maximum current: The greatest possible amount of current, which is a quantity representing the rate of flow of electric charge.
400 A
Wi-Fi: Popular technology that allows an electronic device to exchange data or connect to the internet wirelessly using radio waves.
Yes
Maximum power: The maximum power that can be put into or produced by the device.
3 W
Frequency range: The lowest and the hightest frequencies that can be inputted/produced.
50 - 60
Accuracy:
1 %
Maximum operating altitude:
2000 m
Power source type: What the power source is.
AC
DIN rail mounting:
Yes
Cable section:
0.5 - 2.5
Temperature sensor:
Yes
Microcontroller model:
ESP32-D0WDQ6
Top Wi-Fi standard: Connection of this device is done via Wi-Fi in a high standard.
Wi-Fi 4 (802.11n)
Maximum tightening torque:
0.4 N⋅m
Wi-Fi range:
50 m
Webhooks (URL actions):
Yes
Stripped wire length:
6 - 7
Voltmeter (RMS for each phase):
100 - 260
Ammeter accuracy:
1 - 2

Weight & dimensions

Weight: Weight of the product without packaging (net weight). If possible, the net weight is given including standard accessories and supplies. Please note that sometimes the manufacturer leaves out the weight of accessories and/or supplies.
0.062 kg
Height: The measurement of the product from head to foot or from base to top.
94 mm
Width: The measurement or extent of something from side to side.
19 mm
Depth: The distance from the front to the back of something.
69 mm

Description

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Stock data
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WH94 300 10.08.2026 Best delivery
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Available only for legal entities
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Customer reviews

Customer questions

FAQ

How much does the Energy cost meter AC Shelly Pro 3EM-400A cost, and is it available for purchase?

The price is 334.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 403 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 10.08.2026 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 AC Shelly Pro 3EM-400A be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. We work with leading banks and leasing companies in Latvia, allowing you to make your purchase on convenient terms — with a minimal down payment and a repayment period from 3 to 36 months. You can apply for credit or installments for the Energy cost meter AC Shelly Pro 3EM-400A online, and the application process is as simple as possible:
  • Select the product on the website and add it to your cart;
  • When placing your order, choose the payment method “Installments”;
  • Fill in the required details for the lending partner;
  • Receive a decision within a few minutes.
For more information about available payment options, interest-free installment terms, and credit conditions in Latvia, please visit the Payment page.

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. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: weight, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.