# Current transformer ENTES ELECTRONICS ENT.A20MN 125/1 2.5 VA Class 0.5 Primary 125 A Secondary 5 A, screw mount

**URL:** https://aio.lv/en/product--entes-electronics-enta20mn-1251-25va-cl05--12066970
**Data updated:** 2026-03-12 21:46 (EET)
**Category:** Sensors & Detectors
**Manufacturer:** ENTES ELECTRONICS
**Manufacturer code:** ENT.A20MN 125/1 2,5VA CL:0,5
**EAN:** 2050009812508
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 28.99 €
**Prices and availability valid until:** 2026-08-03 23:59
**Price without VAT (21%):** 23.96 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--entes-electronics-enta20mn-1251-25va-cl05--12066970

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 27.07.2026 | free |
| Pickup points | 30.07.2026 | 1.89 EUR |
| Courier delivery to door | 30.07.2026 | 4.99 EUR |

## Summary description

Instrument current transformer ENTES ELECTRONICS ENT.A20MN 125/1 with rated primary current 125 A and secondary 5 A, rated burden 2.5 VA and accuracy class 0.5. Designed for measurement and protection circuits, it provides galvanic isolation and current scaling for meters, relays and monitoring equipment. Single-piece screw mounting simplifies installation in switchgear and distribution panels.

## Long description

Instrument current transformer ENTES ELECTRONICS ENT.A20MN 125/1 is a screw-mount single-piece device designed to convert a primary current of 125 A to a standardized secondary current of 5 A. With a rated burden of 2.5 VA and accuracy class 0.5, the transformer provides galvanic isolation and reliable current scaling for measurement and protection circuits in switchgear and distribution panels.
Advantages
The transformer offers precise current transformation with class 0.5 accuracy, allowing accurate metering and protection functions. Its compact screw-mount design simplifies installation in confined panel spaces and on DIN-style mounting rails. A low rated burden of 2.5 VA reduces measurement errors under load and helps maintain stability of connected meters and relays. The device provides galvanic isolation between primary and secondary circuits, improving safety for monitoring equipment and personnel.
Suitable for
 Current measurement for electricity meters and energy monitoring systems
 Protection relays and overcurrent detection circuits
 Integration into switchgear, distribution boards and control cabinets
 Retrofit or replacement of similar-rated instrument transformers
Key specifications
 Rated primary current: 125 A
 Rated secondary current: 5 A
 Rated burden: 2.5 VA
 Accuracy class: 0.5
 Mounting type: screw mounting (single-piece)
 Function: galvanic isolation and current scaling for measurement and protection
How to use
Mount the transformer securely on the panel or rail using the provided screw-mount points, ensuring the primary conductor passes through the core in the correct orientation. Connect the secondary terminals to the measuring instrument or protection relay using appropriately rated conductors and ensure secondary circuits are never left open under load. Verify correct polarity and make sure connections are tight to avoid measurement errors. Perform commissioning checks with a known reference or through comparison with a calibrated meter to confirm accuracy and proper operation.
Usage recommendations
Use the transformer within its rated current and burden limits and avoid subjecting it to sustained overcurrents. Ensure secondary circuits are shorted or connected to instruments during maintenance to prevent dangerous voltages. Choose cable sizes and terminal tightening torques according to local regulations and device datasheet guidance. For accurate metering, minimize external influences by routing conductors to reduce magnetic interference and maintain ambient conditions within specified ranges.

## FAQ

### How much does the Current transformer ENTES ENT.A20MN 125/1 Class 0.5 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 — 1 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 27.07.2026 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 ENTES ELECTRONICS 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 ENTES ELECTRONICS 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/12066970/67552189_large.webp