Why Choose the MERSEN FUSE 12,5 URD 70 ESF 0125 12,5URD70ESF0125? MERSEN FUSE 12,5 URD 70 ESF 0125 12,5URD70ESF0125 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 0125 12,5URD70ESF0125 – 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 0125 12,5URD70ESF0125 – 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.
£124.70
The Mersen A300886 is a Protistor® high-speed semiconductor fuse intended to protect sensitive power electronic components against damaging short-circuit currents. Its fast-operating fuse technology is suited to equipment containing semiconductor devices such as diodes, thyristors and IGBT modules.
Mersen Protistor® fuses are engineered to interrupt fault currents rapidly and restrict the electrical energy passed into the protected circuit. This low let-through energy helps reduce thermal and mechanical stress on semiconductor components, limiting the risk of secondary equipment damage and costly operational downtime.
The Mersen A300886 is suitable for demanding industrial power-conversion and control applications, including variable frequency drives, rectifiers, inverters, UPS systems and motor-control equipment. The precise current rating, voltage rating, body size and terminal arrangement should be verified against the latest Mersen technical documentation or the markings on the supplied fuse before specification or installation.
Power semiconductor components can sustain permanent damage when exposed to excessive short-circuit energy, even for a very brief period. High-speed semiconductor fuses use precision-engineered fuse elements to clear fault currents more rapidly than conventional industrial fuses and restrict the energy transferred into the protected equipment.
Correct fuse selection requires coordination with the semiconductor device, operating voltage, prospective fault current, ambient conditions and equipment manufacturer’s recommendations. The A300886 should therefore be specified using current official technical information rather than relying solely on its physical appearance, product family or manufacturer reference.
The Mersen A300886 is intended for high-speed short-circuit protection of power semiconductor components used in industrial drives, converters, rectifiers and related power electronic equipment.
The exact rated current could not be independently confirmed from a current authoritative product listing. Check the official Mersen datasheet or the markings on the supplied fuse before installation.
The applicable voltage rating should be confirmed using the latest Mersen technical documentation. Never select a replacement fuse solely from its physical dimensions or product family.
Not automatically. Semiconductor fuses have specialised operating characteristics and must be coordinated with the protected equipment and its electrical requirements.
Confirm the current and voltage ratings, utilisation category, breaking capacity, dimensions, terminal arrangement, indicator configuration and compatibility with the existing fuse holder or busbar assembly.
Mersen Protistor® fuses are widely specified by equipment manufacturers, system integrators and industrial engineers for the high-speed protection of critical power semiconductor 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...