The PC73UD10C900PA fuse provides rapid fault response and reliable protection for power semiconductor devices with a 900A rating and aR characteristic at 1000VAC IEC and 1100VAC UL.
£305.56
The Mersen F302685 is a genuine Protistor® square body high speed semiconductor fuse engineered to provide exceptional protection for modern power electronic equipment. Designed for demanding industrial applications, this fuse delivers rapid fault interruption to safeguard semiconductor devices including IGBTs, thyristors and diodes used in power conversion systems.
Part of the renowned Mersen Protistor® Size 73 aR series, the F302685 offers reliable protection for high-power industrial equipment operating at up to 1000 V AC IEC and 1100 V AC UL. Its ultra-fast operating characteristics help minimise damage during short circuit conditions, reducing downtime and protecting valuable equipment investments.
Supplied under manufacturer part number F302685 and catalogue number PC73UD10C900PA, this fuse features plain blade terminals with an integrated striker mechanism, making it suitable for OEM installations, industrial maintenance and replacement applications where the original Mersen specification is required.
High speed semiconductor fuses are specifically designed to protect sensitive electronic power devices that require extremely rapid fault clearance. Their low let-through energy helps protect expensive semiconductor assemblies while maintaining system reliability and operational safety.
The Mersen Protistor® range is widely specified in industrial drives, renewable energy systems, UPS equipment and power converters where dependable semiconductor protection is essential for continuous operation.
| Item number | F302685 |
|---|---|
| Catalogue No | PC73UD10C900PA |
| Description | Square Body High-Speed Fuse Protistor® Size 73 aR 1000VAC IEC 1100VAC UL 900A With Striker Plain Blades |
| EAN/UPC Code | 3605340355239 |
| Rated voltage AC UL | 1100 V |
| Rated voltage AC IEC | 1000 V |
| Ampere Rating | 900 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 73 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 1440 kA²s |
| Melting I2t | 250 kA²s |
| AC Max I.R./Breaking Capacity | I1: 167 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | Plain Blades |
| Product Width | 73 mm |
| Product Length | 149.4 mm |
| Product Height | 78.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 3.48 kg |
| Sell Pack Width | 160 mm |
| Sell Pack Length | 245 mm |
| Sell Pack Height | 100 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 1.16 kg |
| Power Dissipation at Rated Current Value | 170 W |
| HS Code | 85361090 |
The Mersen F302685 is a high speed semiconductor fuse designed to protect IGBTs, thyristors, diodes and other power electronic devices from short circuit faults.
The fuse has a 900 A current rating for demanding industrial power applications.
It is rated for 1000 V AC (IEC) and 1100 V AC (UL).
The aR characteristic provides ultra-fast protection specifically for semiconductor devices while allowing normal equipment operation.
This fuse is commonly installed in industrial automation, power conversion, renewable energy, motor drive and heavy electrical equipment.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, automation engineers and maintenance professionals to provide dependable 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...