# Lumel LCTB 6240 Current Transformer, 400A/5A, Busbar Opening 62/40mm

**URL:** https://aio.lv/en/product--lumel-lctb-6240400400a55--12463669
**Data updated:** 2026-05-18 09:43 (EEST)
**Category:** Sensors & Detectors
**Manufacturer:** Lumel
**Manufacturer code:** LCTB 6240400400A55
**EAN:** 5901769490321
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 34.49 €
**Prices and availability valid until:** 2026-07-17 23:59
**Price without VAT (21%):** 28.50 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--lumel-lctb-6240400400a55--12463669

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 09.07.2026 | free |
| Pickup points | 14.07.2026 | 1.99 EUR |
| Courier delivery to door | 14.07.2026 | 4.99 EUR |

## Summary description

The Lumel LCTB 6240 current transformer is designed for precise current measurement in electrical systems. Featuring a 400A/5A transformation ratio and a 62/40mm busbar opening, this device ensures reliable signal conversion for monitoring and protection equipment. It is suitable for industrial power distribution applications where accurate current monitoring is essential for system safety and efficiency.

## Long description

The Lumel LCTB 6240 current transformer is a high-precision device engineered for the accurate measurement of electrical currents in industrial power systems. With a transformation ratio of 400A/5A, it effectively converts high primary currents into a manageable secondary signal suitable for monitoring, metering, and protection relays. Its robust construction and specific busbar opening dimensions make it a reliable component for maintaining system integrity and operational efficiency in demanding electrical environments.
Advantages
This current transformer offers exceptional measurement accuracy, ensuring that connected monitoring equipment receives precise data for system analysis. The design facilitates straightforward installation on busbars, reducing downtime during integration into existing electrical panels. By providing a stable and reliable signal conversion, it supports the long-term performance of protection devices and energy meters, contributing to overall grid stability and safety.
Suitable for
Industrial power distribution networks
Electrical energy metering systems
Protection and control relay applications
Monitoring of high-current electrical circuits
When it may not be suitable
This device is not intended for use in low-current applications where the primary current is significantly below the rated range, as accuracy may be compromised. It is also not suitable for outdoor environments without appropriate protective enclosures, as it is designed for installation within electrical cabinets.
Key specifications
Transformation ratio: 400A/5A
Busbar opening dimensions: 62mm x 40mm
Application: Current measurement and signal conversion
Compatibility: Standard industrial monitoring and protection equipment
How to use
Installation should be performed by qualified personnel in accordance with local electrical safety regulations. The transformer is mounted by passing the primary busbar through the 62/40mm opening. Ensure that the busbar is centered and securely fastened to prevent vibration. The secondary terminals should be connected to the measuring or protection device using appropriate wiring, ensuring that the polarity is correct to maintain measurement accuracy.
What to consider before purchase
Verify that the primary current of your system matches the 400A rating.
Check that your busbar dimensions are compatible with the 62mm x 40mm opening.
Ensure the secondary side is connected to a device compatible with a 5A input.
Confirm that the installation environment meets the necessary safety and temperature requirements.
Usage recommendations
Always ensure the secondary circuit is connected to a load or short-circuited before energizing the primary circuit to prevent dangerous voltage buildup. Regularly inspect connections for tightness and signs of thermal stress.

## FAQ

### How much does the Lumel LCTB 6240 Current Transformer 400A/5A cost, and is it available for purchase?

The price is 34.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 10 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 09.07.2026 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/12463669/68765394_large.webp