# Lumel LCTB 8660450400A55 Current Transformer, 400/5A, Class 0.5, Busbar Opening

**URL:** https://aio.lv/en/product--lumel-lctb-8660450400a55--12461770
**Data updated:** 2026-05-18 09:32 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Lumel
**Manufacturer code:** LCTB 8660450400A55
**EAN:** 5901769492271
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 40.49 €
**Prices and availability valid until:** 2026-07-20 23:59
**Price without VAT (21%):** 33.46 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lumel-lctb-8660450400a55--12461770

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.99 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Lumel LCTB 8660450400A55 is a high-precision current transformer designed for electrical measurement and monitoring systems. It features a 400/5A transformation ratio and operates with a 0.5 accuracy class. Engineered for busbar mounting, this device ensures reliable current signal conversion for energy meters and protection relays in industrial and commercial power distribution networks.

## Long description

The Lumel LCTB 8660450400A55 is a high-precision current transformer engineered for accurate current measurement and monitoring within electrical power systems. This device is specifically designed to convert high primary currents into a manageable secondary signal, making it an essential component for energy management, billing, and protection applications in industrial and commercial environments.
Advantages
This current transformer offers exceptional reliability and precision, maintaining a 0.5 accuracy class even under demanding operational conditions. Its robust construction ensures long-term stability in power distribution networks, while the busbar mounting design allows for efficient and secure installation. By providing a consistent 400/5A transformation ratio, it facilitates seamless integration with standard energy meters and protection relays, ensuring that electrical data remains accurate and actionable for system operators.
Suitable for
Industrial power distribution monitoring
Commercial energy metering systems
Protection relay circuits
Electrical load management and analysis
When it may not be suitable
This device is not intended for use in high-voltage transmission lines exceeding its specified insulation levels. It is also not suitable for applications requiring non-standard transformation ratios or for environments where the physical dimensions of the busbar exceed the transformer's aperture capacity.
Key specifications
Transformation ratio: 400/5A
Accuracy class: 0.5
Mounting type: Busbar
Application: Current signal conversion
How to use
The transformer is installed by passing the primary busbar through the central aperture of the device. Ensure that the busbar is centered and securely fastened to prevent vibration. The secondary terminals should be connected to the measuring instrument or protection relay using appropriately sized wiring. Always ensure that the secondary circuit is closed before energizing the primary conductor to prevent high voltage buildup.
What to consider before purchase
Verify the dimensions of your existing busbar against the transformer aperture.
Ensure the 400/5A ratio matches your specific measurement requirements.
Confirm that the 0.5 accuracy class meets the standards required for your billing or monitoring application.
Usage recommendations
Always consult with a qualified electrician for installation. Ensure that all connections are tightened to the manufacturer's specifications and that the secondary circuit is never left open while the primary current is flowing.

## FAQ

### How much does the Lumel LCTB 8660450400A55 Current Transformer cost, and is it available for purchase?

The price is 40.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 11 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 14.07.2026 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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