# Three-phase digital active energy meter ZAMEL LEM-50 100 A, direct connection

**URL:** https://aio.lv/en/product--zamel-0001-00019-39220--12398662
**Data updated:** 2026-04-27 22:32 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** ZAMEL
**Manufacturer code:** 0001-00019-39220
**EAN:** 5903669501879
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 29.49 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 24.37 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--zamel-0001-00019-39220--12398662

## Delivery options

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

## Summary description

ZAMEL LEM-50 is a three-phase digital active energy (kWh) meter designed for direct connection up to 100 A. The device accurately registers active energy consumption per phase and total, provides clear digital readings and pulse output for remote telemetry. Suitable for residential, commercial or light industrial installations requiring reliable energy monitoring and consumption accounting.

## Long description

ZAMEL LEM-50 is a three-phase digital active energy meter designed for direct connection on systems up to 100 A. The meter measures and displays active energy (kWh) per phase and total consumption on a clear digital screen. It provides a pulse output for integration with remote telemetry or building management systems. The compact DIN-rail housing and straightforward wiring make it suitable for residential, commercial and light industrial installations where accurate energy accounting is required.
Advantages
The LEM-50 offers precise active energy measurement across three phases with separate phase and total registers, a readable digital display and a pulse output for external monitoring. Its direct-connect design simplifies installation in distribution boards without the need for external current transformers for loads up to the rated current. The device uses standard DIN-rail mounting, ensuring compatibility with common electrical enclosures and straightforward replacement or upgrade of existing meters.
Suitable for (tasks / use cases)
 Residential apartment blocks and multi-dwelling units for tenant consumption accounting
 Commercial premises such as shops, offices and restaurants for monthly energy monitoring
 Light industrial or workshop distribution boards where loads do not exceed the direct connection limit
 Integration with building management systems and energy telemetry via pulse output
When it may not be suitable
This direct-connection meter is not designed for systems with currents exceeding the rated 100 A; installations above that limit normally require meters with external current transformers. It also measures active energy only; applications that require reactive energy, harmonic analysis or advanced power quality diagnostics will need a more feature-rich instrument.
Key specifications
 Measurement: three-phase active energy (kWh), per-phase and total
 Connection type: direct connection for conductors up to the specified current rating
 Rated current: suitable for single- and three-phase systems up to the stated current limit
 Display: digital LCD/LED readout showing energy registers
 Outputs: pulse output for external telemetry or data acquisition
 Mounting: DIN-rail enclosure compatible with standard distribution boards
How to use
Install the meter on a standard DIN rail in the distribution board and connect phase and neutral conductors according to the wiring diagram provided by the manufacturer. Verify that the system current does not exceed the meter's direct-connection rating before switching on. Use the digital display to read per-phase and total energy consumption. Connect the pulse output to a compatible counter or telemetry input for remote energy logging. Follow local electrical codes and switch off supply power while making connections.
What to consider before purchase
 Ensure the meter's maximum direct-connection current rating matches or exceeds your system's maximum load
 Confirm that only active energy (kWh) measurement meets your monitoring requirements; reactive measurements are not provided
 Check physical dimensions and DIN-rail space in the distribution board for proper installation
 Verify compatibility of the pulse output with your telemetry or energy management hardware
Usage recommendations
For reliable readings, have the installation performed by a qualified electrician, confirm proper wiring and protective devices, and periodically verify the display and pulse output operation as part of preventive maintenance.

## FAQ

### How much does the ZAMEL LEM-50 three-phase digital meter 100 A cost, and is it available for purchase?

The price is 29.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 135 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 Friday 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 ZAMEL 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 ZAMEL 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/12398662/68681572_large.webp