High-speed Protistor® fuse with aR characteristic, size 70, rated 63A at 1250VAC IEC and 1300VAC UL with striker indication and flush ends with metric threads for bolted mounting.
£97.59
The Mersen M300483, catalogue number PC70UD13C63TF, is a premium Protistor® square body high speed semiconductor fuse developed to provide ultra-fast protection for sensitive power electronic equipment. Designed specifically for semiconductor applications, it safeguards IGBTs, thyristors, diodes and other power devices against damaging short circuits in demanding industrial environments.
With a 63 A current rating, 1250 V AC IEC / 1300 V AC UL voltage rating and aR operating class, the M300483 delivers rapid fault interruption while limiting energy let-through to protect valuable equipment. Its high breaking capacity and robust square body construction make it ideal for modern power conversion systems.
The fuse features a Size 70 square body design, flush end metric threaded terminals and an integrated striker indicator, allowing simple installation into compatible fuse holders and remote indication systems used in industrial electrical panels.
Semiconductor protection fuses are designed to interrupt high fault currents before expensive power electronic devices can be damaged. Their ultra-fast operating characteristics minimise thermal and mechanical stress on semiconductor components while improving equipment reliability and reducing maintenance costs.
The Mersen M300483 is widely specified for high voltage power conversion systems where dependable protection and high performance are essential for continuous industrial operation.
| Item number | M300483 |
|---|---|
| Catalogue No | PC70UD13C63TF |
| Description | Square Body High-Speed Fuse Protistor® Size 70 aR 1250VAC IEC 1300VAC UL 63A With Striker Flush ends metric threads |
| EAN/UPC Code | 3605340329124 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 63 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 70 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 1680 A²s |
| Melting I2t | 210 A²s |
| AC Max I.R./Breaking Capacity | I1: 126 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Brass |
| Connection/Terminal Type | Flush ends |
| Product Width | 39.8 mm |
| Product Length | 74 mm |
| Product Height | 49.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.017 kg |
| Sell Pack Width | 85 mm |
| Sell Pack Length | 133 mm |
| Sell Pack Height | 55 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.339 kg |
| Power Dissipation at Rated Current Value | 26 W |
| HS Code | 85351000 |
The M300483 is an ultra-fast semiconductor fuse designed to protect IGBTs, thyristors, diodes and other semiconductor devices against damaging short circuit faults.
The fuse has a 63 A rated current.
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL) systems.
The aR operating class provides ultra-fast short circuit protection specifically for semiconductor devices while overload protection is provided elsewhere in the electrical system.
The M300483 is typically installed in industrial drives, power converters, renewable energy equipment, UPS systems and other high voltage power electronic installations.
Mersen Protistor® semiconductor fuses are trusted by electrical engineers, OEM manufacturers and industrial panel builders worldwide to provide reliable 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...