Rapid response fuse providing 100A protection at 1250VAC IEC and 1300VAC UL with striker indication and DIN 110 blade terminals for semiconductor protection.
£113.78
The Mersen X300538 is a premium square body semiconductor protection fuse engineered to provide ultra-fast protection for sensitive power semiconductor devices including IGBTs, thyristors, GTOs and diodes. As part of the Mersen Protistor® Size 70 aR series, it delivers outstanding protection for high-voltage power conversion equipment operating in demanding industrial applications.
Designed with low energy let-through characteristics and a high breaking capacity, the X300538 helps minimise damage during short-circuit faults while maximising equipment reliability. Its square body construction features silver-plated contacts, DIN 110 blade terminals and an integrated striker indicator for simplified maintenance and system monitoring.
With a 100 A current rating and a 1250 V AC IEC / 1300 V AC UL voltage rating, the Mersen X300538 is ideally suited for protecting industrial drives, converters, UPS systems, renewable energy equipment and other high-voltage power electronic applications.
High-speed semiconductor fuses are specifically designed to interrupt fault currents before expensive semiconductor devices can be damaged. Their ultra-fast response helps minimise thermal stress while maintaining the performance and reliability of industrial power conversion equipment.
The Mersen Protistor® range is trusted worldwide across industrial automation, renewable energy, transportation and heavy industry, providing dependable protection for drives, converters, rectifiers and UPS systems.
| Current | 11 A |
|---|---|
| Item number | X300538 |
| Catalogue No | PC70UD13C100D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1250VAC IEC 1300VAC UL 100A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340329964 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 100 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 70 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 6750 A²s |
| Melting I2t | 830 A²s |
| 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 | 39.8 mm |
| Product Length | 133.4 mm |
| Product Height | 49.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.0899 kg |
| Sell Pack Width | 130 mm |
| Sell Pack Length | 140 mm |
| Sell Pack Height | 50 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.3633 kg |
| Power Dissipation at Rated Current Value | 30 W |
| HS Code | 85351000 |
The X300538 provides ultra-fast protection for semiconductor devices including IGBTs, thyristors, GTOs and diodes used in industrial power conversion equipment.
This fuse has a 100 A current rating.
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL).
Yes. The fuse incorporates an integrated striker indicator that can operate a compatible microswitch for remote indication.
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other high-voltage power electronic applications.
Mersen Protistor® semiconductor protection fuses are trusted worldwide to safeguard critical power electronic equipment by delivering rapid fault interruption, high breaking capacity and dependable long-term performance.
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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...