# Mersen F1014581 Ultra-Fast Cylindrical Fuse, gR Class, 690VAC, 10x38mm, 25A

**URL:** https://aio.lv/en/product--mersen-f1014581--12457637
**Data updated:** 2026-05-18 09:32 (EEST)
**Category:** Miscellaneous repair tools
**Manufacturer:** Mersen
**Manufacturer code:** F1014581
**EAN:** 3605340501032
**Warranty:** 2 Years
**Availability:** Out of stock

## Summary description

The Mersen F1014581 is an ultra-fast, full-range cylindrical fuse designed for reliable circuit protection. Featuring a 10x38mm form factor and 25A rated current, this gR class fuse is rated for 690VAC operation. It provides high-speed protection for power electronics and semiconductor devices, ensuring safety and performance in demanding industrial electrical applications.

## Long description

The Mersen F1014581 is a high-performance, ultra-fast cylindrical fuse engineered to provide comprehensive circuit protection for sensitive electrical systems. Designed with a compact 10x38mm form factor, this gR class fuse is specifically optimized for the protection of power electronics and semiconductor devices. With a rated voltage of 690VAC and a current rating of 25A, it ensures reliable operation and rapid response times in demanding industrial environments where equipment safety is paramount.
Advantages
This fuse offers exceptional performance due to its ultra-fast acting characteristics, which are essential for safeguarding expensive semiconductor components from short circuits and overcurrent conditions. Its full-range gR class classification ensures that it can handle both overload and short-circuit protection effectively. The robust construction and standardized 10x38mm dimensions allow for easy integration into existing fuse holders and electrical panels, providing a reliable solution for modern power conversion systems.
Suitable for
Power electronics protection
Semiconductor device safeguarding
Industrial automation systems
Frequency converters and inverters
Soft starters and power supplies
This fuse is not intended for general-purpose residential electrical circuits or standard household appliances. It is specifically designed for high-speed semiconductor protection and may not provide the correct tripping characteristics for standard motor branch circuits or general distribution lines where slower-acting fuses are typically required.
Key specifications
Dimensions: 10x38mm
Rated current: 25A
Rated voltage: 690VAC
Fuse class: gR
Application type: Ultra-fast, full-range
To install the Mersen F1014581, ensure the power supply is completely disconnected from the circuit. Insert the fuse into a compatible 10x38mm fuse holder or disconnect switch, ensuring that the contact points are clean and secure. Verify that the fuse rating matches the requirements of the equipment being protected before restoring power to the system.
What to consider before purchase
Verify that the 25A current rating matches your circuit requirements
Ensure the fuse holder is compatible with 10x38mm cylindrical fuses
Confirm that the application involves semiconductor or power electronics protection
Check that the system voltage does not exceed 690VAC
For optimal safety and longevity, always replace fuses with the exact same type and rating. Regularly inspect fuse holders for signs of oxidation or heat damage to ensure a reliable electrical connection.

## FAQ

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer. 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 Mersen 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 Mersen 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/12457637/68759803_large.webp