Why Choose the MERSEN FUSE 12,5 URD 70 ESF 0250 12,5URD70ESF0250? MERSEN FUSE 12,5 URD 70 ESF 0250 12,5URD70ESF0250 delivers robust, standards-compliant performance for demanding electrical applications. This model provides reliable protection and ease of installation, with all key features engineered for maximum safety and efficiency. Key Takeaways – Product Name: MERSEN FUSE 12,5 URD 70 ESF 0250 12,5URD70ESF0250 – Key Specs: See description below Frequently Asked Questions – What is the primary application? – Is this product certified? – What are the installation options? – What are the key benefits? – Where can I find technical data? Speed & Safety Benefits – Reliable Performance: Engineered for consistent results – Safe Operation: Built to meet modern standards – Quick Installation: Designed for installer convenience Key Features of MERSEN FUSE 12,5 URD 70 ESF 0250 12,5URD70ESF0250 – See full description below – Engineered for reliability – Technical support available What is the primary application?+ See product description for detailed use cases. Is this product certified?+ Consult technical data or documentation for certifications. What are the installation options?+ Refer to the installation manual or contact our team for guidance. What are the key benefits?+ Engineered for performance, reliability, and ease of use. Where can I find technical data?+ Technical datasheets are available on request or on our website.
£147.96
The Mersen D300820 is a premium Protistor® square body high-speed semiconductor fuse designed to provide ultra-fast protection for sensitive power electronic equipment. Engineered with an aR ultra-fast operating characteristic, it safeguards semiconductors such as IGBTs, thyristors, diodes and rectifiers against damaging short-circuit currents while helping minimise downtime and equipment damage.
Manufactured by Mersen, a global leader in electrical protection solutions, the D300820 forms part of the renowned Protistor® range, offering excellent current-limiting performance, low let-through energy and dependable operation in demanding industrial environments. Its robust square body construction ensures long-term reliability in critical applications.
The D300820 is suitable for industrial power conversion systems, motor drives, renewable energy equipment, UPS installations and other applications requiring dependable semiconductor protection and rapid fault interruption.
High-speed semiconductor fuses are specifically engineered to interrupt fault currents before sensitive electronic components suffer irreversible damage. Their ultra-fast operation reduces thermal stress, extends equipment life and improves the reliability of industrial power systems.
Mersen Protistor® fuses are widely specified by OEMs, panel builders and maintenance engineers for demanding industrial applications requiring dependable semiconductor protection and high fault-clearing performance.
The Mersen D300820 is designed to protect semiconductor devices such as IGBTs, thyristors and diodes from damaging short-circuit currents in industrial power electronic equipment.
It is a high-speed aR semiconductor protection fuse intended for demanding industrial applications.
Typical applications include variable frequency drives, power converters, UPS systems, renewable energy equipment and industrial automation systems.
They rapidly interrupt fault currents, helping prevent damage to expensive semiconductor components and reducing equipment downtime.
The D300820 is manufactured by Mersen, a global leader in electrical protection and advanced materials.
Mersen Protistor® high-speed semiconductor fuses are trusted worldwide by OEMs, electrical engineers and industrial manufacturers to deliver dependable protection for critical power electronic equipment.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...