# Lumel LCTB 5030 Current Transformer, 100A/5A, Busbar Aperture 50x30mm

**URL:** https://aio.lv/en/product--lumel-lctb-5030300100a55--12453874
**Data updated:** 2026-05-18 02:43 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Lumel
**Manufacturer code:** LCTB 5030300100A55
**EAN:** 5901769490154
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 28.99 €
**Prices and availability valid until:** 2026-07-31 23:59
**Price without VAT (21%):** 23.96 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lumel-lctb-5030300100a55--12453874

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 20.07.2026 | free |
| Pickup points | 23.07.2026 | 1.89 EUR |
| Courier delivery to door | 23.07.2026 | 4.99 EUR |

## Summary description

The Lumel LCTB 5030 current transformer is designed for precise current measurement in electrical systems. Featuring a 100A/5A transformation ratio and a 50x30mm busbar aperture, this device ensures reliable signal conversion for monitoring and protection equipment. It is suitable for industrial applications requiring accurate current monitoring and integration into power distribution panels.

## Long description

The Lumel LCTB 5030 current transformer is a high-precision device engineered for accurate current measurement within electrical distribution systems. With a transformation ratio of 100A/5A, it effectively steps down high primary currents to a manageable secondary level suitable for standard monitoring and protection relays. Designed with a robust busbar aperture of 50x30mm, this transformer integrates seamlessly into industrial power panels, providing reliable signal conversion for energy management and system safety.
Advantages
This current transformer offers exceptional measurement accuracy, ensuring that connected monitoring equipment receives precise data for effective power analysis. Its durable construction is specifically designed to withstand the rigors of industrial environments, providing long-term operational stability. The generous busbar aperture allows for flexible installation on various busbar sizes, simplifying the integration process into existing electrical infrastructures. By converting high currents into a standardized 5A output, it ensures compatibility with a wide range of industrial meters and protection devices.
Suitable for
Industrial power distribution panels
Energy monitoring and management systems
Protection relay circuits
Electrical current measurement in switchgear
When it may not be suitable
This device is not intended for use in high-voltage transmission lines or applications where the primary current exceeds the rated 100A capacity. It is also not suitable for environments with extreme moisture or corrosive gases that could compromise the integrity of the transformer housing.
Key specifications
Transformation ratio: 100A/5A
Busbar aperture dimensions: 50x30mm
Primary current rating: 100A
Secondary current output: 5A
Application: Industrial electrical systems
How to use
Installation should be performed by a qualified electrician in accordance with local safety regulations. The transformer is mounted by passing the primary busbar through the 50x30mm aperture. Ensure the busbar is centered and securely fastened to prevent vibration. Connect the secondary terminals to the measuring or protection device using appropriate gauge wiring, ensuring that the polarity is correctly observed to maintain measurement accuracy.
What to consider before purchase
Verify that the primary current of your system does not exceed 100A
Ensure the busbar dimensions are compatible with the 50x30mm aperture
Check the input requirements of your secondary monitoring equipment
Confirm that the installation environment meets the technical requirements for this device
Usage recommendations
Always ensure that the secondary circuit is connected to a load or short-circuited before energizing the primary circuit to prevent dangerous voltage build-up. Regularly inspect the connections for tightness and signs of thermal stress.

## FAQ

### How much does the Lumel LCTB 5030 Current Transformer 100A/5A cost, and is it available for purchase?

The price is 28.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 51 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 20.07.2026 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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