High-speed fuse with aR characteristic, rated 315A at 1250VAC (IEC) and 1300VAC (UL), featuring a ceramic square body, striker indication, and DIN 110 blade terminals for semiconductor protection.
£145.72
The Mersen G300547 (PC71UD13C315D1A) is a premium square body high-speed semiconductor fuse engineered to provide fast and reliable protection for sensitive power electronic equipment. As part of the renowned Mersen Protistor® Size 71 aR series, it is specifically designed to safeguard semiconductor devices including IGBTs, thyristors, diodes and power conversion systems operating at high voltages.
Designed for demanding industrial applications, this ultra-fast acting fuse helps minimise damage caused by short circuits by rapidly interrupting fault currents before they can reach critical semiconductor components. Its robust square body construction, silver-plated contacts and solidified sand arc-quenching technology deliver exceptional performance and reliability in modern electrical systems.
With a 315 A current rating, 1250 V AC IEC / 1300 V AC UL voltage rating and integrated striker indicator, the G300547 is ideally suited for use in drives, inverters, UPS systems, renewable energy equipment and industrial power conversion installations where dependable semiconductor protection is essential.
High-speed semiconductor fuses are specifically engineered to protect sensitive electronic components from destructive short-circuit currents. Unlike conventional industrial fuses, they operate extremely quickly, limiting fault energy and helping prevent expensive damage to power semiconductors.
The Mersen Protistor® range is widely specified for industrial drives, renewable energy systems, UPS installations and power conversion equipment where dependable overcurrent protection is critical to maintaining system reliability and reducing downtime.
| Current | 11 A |
|---|---|
| Item number | G300547 |
| Catalogue No | PC71UD13C315D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 71 aR 1250VAC IEC 1300VAC UL 315A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340330052 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 315 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 71 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 129 kA²s |
| Melting I2t | 16 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 | 51 mm |
| Product Length | 133.4 mm |
| Product Height | 56.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.56 kg |
| Sell Pack Width | 142 mm |
| Sell Pack Length | 166 mm |
| Sell Pack Height | 62 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.52 kg |
| Power Dissipation at Rated Current Value | 76 W |
| HS Code | 85351000 |
The G300547 is a high-speed semiconductor fuse designed to protect sensitive power electronic devices such as IGBTs, thyristors and rectifiers from damaging short-circuit currents.
This fuse has a 315 A current rating.
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL).
The built-in striker provides a mechanical indication that the fuse has operated and can also be used with compatible microswitch accessories for remote monitoring.
It is commonly installed in industrial drives, inverters, UPS systems, renewable energy equipment and other high-power semiconductor protection applications.
Mersen Protistor® semiconductor fuses are trusted worldwide by equipment manufacturers and industrial engineers for delivering rapid fault protection, high reliability and dependable performance in demanding power electronic applications.
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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...