# Lumel LCTB 7440 Current Transformer for Busbar 74/40, 200A/5A

**URL:** https://aio.lv/en/product--lumel-lctb-7440450200a55--12461001
**Data updated:** 2026-05-18 09:34 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Lumel
**Manufacturer code:** LCTB 7440450200A55
**EAN:** 5901769490413
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 56.49 €
**Prices and availability valid until:** 2026-08-05 23:59
**Price without VAT (21%):** 46.69 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lumel-lctb-7440450200a55--12461001

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 24.07.2026 | free |
| Pickup points | 29.07.2026 | 1.89 EUR |
| Courier delivery to door | 29.07.2026 | 4.99 EUR |

## Summary description

The Lumel LCTB 7440 current transformer is designed for precise current measurement in electrical systems. Featuring a 74/40 busbar opening, this device provides a transformation ratio of 200A/5A. It is ideal for industrial monitoring and energy management applications, ensuring reliable performance and accurate signal conversion for secondary measuring instruments.

## Long description

The Lumel LCTB 7440 current transformer is a high-precision component engineered for the reliable measurement of alternating current in electrical distribution systems. Designed specifically for busbar mounting, this device features a 74/40 mm aperture, allowing for seamless integration into existing power infrastructure. It effectively transforms high primary currents into a manageable 5A secondary signal, making it an essential tool for accurate monitoring and energy management.
Advantages
This current transformer offers exceptional measurement accuracy, ensuring that secondary devices receive precise data for monitoring and control purposes. Its robust construction is designed to withstand the rigors of industrial environments, providing long-term stability and consistent performance. The busbar-mounted design simplifies the installation process, reducing downtime and labor costs during system upgrades or maintenance. By converting high currents into standard secondary values, it ensures compatibility with a wide range of measuring instruments and protection relays.
Suitable for
Industrial power distribution monitoring
Energy management and sub-metering systems
Protection relay signal acquisition
Electrical panel instrumentation
This device may not be suitable for applications involving direct current (DC) measurement, as it is specifically designed for alternating current (AC) systems. It is also not intended for use in high-voltage transmission lines exceeding its specified insulation class or in environments where the busbar dimensions exceed the 74/40 mm aperture capacity.
Key specifications
Transformation ratio: 200A/5A
Busbar aperture: 74/40 mm
Mounting type: Busbar
Application: AC current measurement
To use the Lumel LCTB 7440, ensure the electrical system is de-energized before installation. Slide the transformer over the primary busbar, ensuring the orientation matches the required current flow direction. Secure the device firmly using the provided mounting hardware. Connect the secondary terminals to your measuring instrument or energy meter using appropriately sized wiring, ensuring all connections are tight and compliant with local electrical safety standards.
What to consider before purchase
Verify that the primary current of your system matches the 200A rating
Check that your busbar dimensions fit within the 74/40 mm opening
Ensure compatibility with your secondary measuring equipment's input requirements
Confirm the environmental conditions are within the manufacturer's specified operating range
Usage recommendations
Always ensure that the secondary circuit of the current transformer is connected to a load or short-circuited before energizing the primary circuit to prevent dangerous voltage build-up.

## FAQ

### How much does the Lumel LCTB 7440 Current Transformer 200A/5A cost, and is it available for purchase?

The price is 56.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 7 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 24.07.2026 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

https://aio.lv/img/cache/product/12461001/68762970_large.webp