# Insulation Resistance Tester Unit UT502A — handheld insulation tester CAT III/CAT IV

**URL:** https://aio.lv/en/product--unit-ut502a--11275128
**Data updated:** 2026-03-10 10:51 (EET)
**Category:** Measuring tools
**Manufacturer:** Unit
**Manufacturer code:** UT502A
**EAN:** 6935750550212
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 136.50 €
**Prices and availability valid until:** 2026-08-09 23:59
**Price without VAT (21%):** 112.81 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--unit-ut502a--11275128

## Delivery options

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

## Summary description

Handheld insulation resistance tester Unit UT502A designed for measuring insulation integrity in electrical installations. Rated for CAT III and CAT IV environments, it provides safe testing of insulation resistance on cables, motors, transformers and switchgear. Compact form factor for field use, suitable for electricians and maintenance professionals requiring reliable insulation checks.

## Long description

The Unit UT502A handheld insulation resistance tester is designed for measuring insulation integrity in electrical installations. Rated for CAT III and CAT IV environments, this compact tester is intended for field use by electricians and maintenance professionals who need to verify insulation resistance on cables, motors, transformers and switchgear. Its form factor and safety ratings make it suitable for routine inspection and preventive maintenance tasks where reliable insulation measurements are required.
Advantages
The UT502A combines portability with safety approvals appropriate for distribution and industrial environments, enabling safe measurements near live electrical equipment when used according to safety guidelines. The instrument offers straightforward operation and clear readouts, reducing the time required to perform insulation checks. Durable construction and a compact design support repeated field use and transportation between sites.
Suitable for
 Testing insulation resistance of power and control cables
 Inspecting motors and generators for insulation degradation
 Verifying insulation on transformers and switchgear
 Routine preventive maintenance and commissioning checks
Key specifications
 Safety rating: suitable for CAT III and CAT IV electrical environments
 Handheld, portable form factor for field measurements
 Designed to measure insulation resistance on cables, motors, transformers and switchgear
 User interface optimised for straightforward readouts and operation in typical field conditions
 Durable construction for repeated use in maintenance and inspection workflows
How to use
Before use, ensure the circuit under test is de-energised and isolated in accordance with local safety procedures unless live testing is explicitly permitted by the tester's operating instructions. Connect the test leads securely to the device and to the conductors or equipment under test. Select the appropriate test function and range, then initiate the measurement. Observe displayed values until the reading stabilises and log or record results as required. After testing, discharge any residual test voltage from the equipment under test and disconnect the instrument leads safely.
Usage recommendations
Operate the tester following the manufacturer’s safety instructions and applicable electrical safety standards. Use appropriate personal protective equipment and confirm proper isolation when performing measurements. Regularly inspect test leads and the case for damage, and calibrate the instrument according to recommended intervals to maintain measurement accuracy.

## FAQ

### How much does the Insulation Resistance Tester Unit UT502A cost, and is it available for purchase?

The price is 136.50 € (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 Wednesday 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, Installment. All transactions are 100% secure and encrypted.

### Can Insulation Resistance Tester Unit UT502A be purchased with a lease?

Yes, the purchase is available both on credit and with an interest-free installment plan. Learn more about installments and credit options: https://aio.lv/en/payment#b3

### 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 Unit 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 Unit 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/11275128/63892354_large.webp