# Lumel LCTB 5030 Current Transformer 125/5A Class 0.5 with 50/30mm Busbar Aperture

**URL:** https://aio.lv/en/product--lumel-lctb-5030300125a55--12461769
**Data updated:** 2026-05-18 09:32 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Lumel
**Manufacturer code:** LCTB 5030300125A55
**EAN:** 5901769493957
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 25.99 €
**Prices and availability valid until:** 2026-08-07 23:59
**Price without VAT (21%):** 21.48 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lumel-lctb-5030300125a55--12461769

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 28.07.2026 | free |
| Pickup points | 31.07.2026 | 1.89 EUR |
| Courier delivery to door | 31.07.2026 | 4.99 EUR |

## Summary description

The Lumel LCTB 5030 current transformer is designed for precise current measurement in electrical systems. It features a 125/5A transformation ratio and operates with 0.5 accuracy class. Equipped with a 50/30mm busbar aperture, this device is suitable for industrial power monitoring and energy management applications, ensuring reliable performance and accurate signal conversion for secondary measuring instruments.

## Long description

The Lumel LCTB 5030 current transformer is a high-precision device engineered for accurate current measurement in electrical distribution systems. With a transformation ratio of 125/5A and a 0.5 accuracy class, it provides reliable signal conversion for secondary measuring instruments, such as ammeters, energy meters, and power analyzers. The unit is designed for mounting on busbars, featuring a 50/30mm aperture that accommodates standard industrial busbar configurations.
Advantages
This current transformer offers exceptional measurement stability and precision, which is essential for effective energy management and monitoring. Its robust construction ensures long-term durability in demanding industrial environments. The device is optimized for easy installation on busbars, reducing setup time while maintaining high signal integrity for downstream monitoring equipment. By providing a standardized secondary output, it ensures compatibility with a wide range of electrical measurement and protection devices.
Suitable for
Industrial power monitoring systems
Energy management and sub-metering
Electrical distribution panels
Secondary signal conversion for ammeters and power meters
This device may not be suitable for applications requiring high-voltage insulation beyond its rated specifications or for environments with extreme electromagnetic interference that could affect signal accuracy. It is not intended for direct connection to high-voltage lines without appropriate safety isolation and professional installation.
Key specifications
Transformation ratio: 125/5A
Accuracy class: 0.5
Busbar aperture dimensions: 50/30mm
Application: Low voltage electrical systems
To use the Lumel LCTB 5030, ensure the primary conductor is passed through the busbar aperture, ensuring the orientation matches the required polarity for accurate measurement. The secondary terminals should be connected to the measuring instrument using appropriately sized wiring to minimize resistance. Always ensure the secondary circuit is closed before energizing the primary conductor to prevent high-voltage buildup.
What to consider before purchase
Verify the current rating matches your system requirements
Check the physical dimensions of your busbar against the 50/30mm aperture
Ensure the accuracy class meets your specific monitoring needs
Confirm compatibility with your existing secondary measuring instruments
For optimal performance and safety, ensure all connections are tightened to the manufacturer's torque specifications and that the device is installed by a qualified electrical technician in accordance with local safety standards.

## FAQ

### How much does the Lumel LCTB 5030 Current Transformer 125/5A Class 0.5 cost, and is it available for purchase?

The price is 25.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 36 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 28.07.2026 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 Lumel 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 Lumel 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

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