High-speed aR fuse designed for semiconductor protection with 500A rating, 1250VAC IEC and 1300VAC UL voltage ratings, featuring a striker indication system and DIN 110 blade terminals.
£263.77
The Mersen E300568, catalogue number PC73UD13C500D1A, is a premium square body high-speed semiconductor fuse engineered to provide ultra-fast protection for modern high-voltage power electronic equipment. As part of the trusted Mersen Protistor® Size 73 series, this fuse is specifically designed to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short circuits and fault currents. Featuring DIN 110 blade terminals with an integrated striker indicator, it offers outstanding performance in demanding industrial applications.
Designed for maximum flexibility in equipment design, the E300568 incorporates precision die-cut fuse elements embedded in solidified sand, together with silver-plated contact surfaces and non-magnetic hardware. This construction delivers exceptionally low let-through energy (I²t), high interrupting capability and reliable long-term protection for critical semiconductor devices.
With a 500 A current rating, 1250 V AC IEC rating and 1300 V AC UL rating, the Mersen E300568 is ideally suited for renewable energy systems, industrial motor drives, UPS installations, battery energy storage systems and high-power converters requiring dependable semiconductor protection.
High-speed semiconductor fuses are engineered to interrupt fault currents before sensitive semiconductor devices can be damaged. The Mersen Protistor® Size 73 range provides exceptionally fast fault clearing with low I²t values, making it ideal for protecting high-voltage power conversion equipment while improving reliability and reducing costly downtime.
The E300568 is widely used in renewable energy systems, industrial motor drives, power converters, battery energy storage systems, UPS installations and heavy-duty automation equipment where dependable semiconductor protection is essential.
| Current | 11 A |
|---|---|
| Item number | E300568 |
| Catalogue No | PC73UD13C500D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 500A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340330403 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 500 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 73 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 360 kA²s |
| Melting I2t | 44 kA²s |
| AC Max I.R./Breaking Capacity | I1: 126 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | DIN 110 Blades |
| Product Width | 73 mm |
| Product Length | 133.4 mm |
| Product Height | 78.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 3.36 kg |
| Sell Pack Width | 150 mm |
| Sell Pack Length | 250 mm |
| Sell Pack Height | 90 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 1.12 kg |
| Power Dissipation at Rated Current Value | 112 W |
| HS Code | 85351000 |
The E300568 provides ultra-fast protection for semiconductor devices including IGBTs, thyristors and diodes used in high-voltage power conversion equipment.
The Mersen E300568 has a 500 A rated current.
It is rated for 1250 V AC (IEC) and 1300 V AC (UL) applications.
The fuse features robust DIN 110 blade terminals with silver-plated contact surfaces for secure bolted installation.
It is commonly installed in renewable energy systems, industrial drives, converters, UPS systems and other high-voltage power electronic installations.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, panel builders and industrial engineers to deliver dependable protection for critical power electronic equipment operating in demanding industrial environments.
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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...