High-speed fuse designed for semiconductor protection with 280A rating, 1250VAC IEC and 1300VAC UL voltage ratings, featuring a striker indication system and DIN 110 blade terminals.
£169.35
The Mersen P300554 is a premium Protistor® Size 72 high-speed semiconductor fuse engineered to provide ultra-fast protection for sensitive power electronic equipment. Designed for demanding industrial applications, it protects diodes, thyristors, IGBTs and other semiconductor devices from damaging short-circuit and overcurrent conditions while helping maximise equipment reliability and minimise downtime.
As part of the advanced Mersen Protistor® Size 72 series, the P300554 combines a high interrupting capacity with exceptionally low let-through energy. Its robust square ceramic body, silver-plated contacts and integrated striker indicator make it ideal for variable speed drives, UPS systems, industrial power converters, renewable energy systems and other high-performance power electronic equipment.
Rated at 280 A with a 1250 V AC IEC / 1300 V AC UL voltage rating, the P300554 features DIN 110 blade terminals with an integrated striker, providing secure installation and dependable protection for industrial semiconductor applications.
High-speed semiconductor fuses are specifically designed to interrupt fault currents before expensive power electronic components can be damaged. The Mersen Protistor® range delivers exceptionally low I²t values and rapid fault clearance, helping extend equipment life while reducing maintenance costs and production downtime.
The P300554 is widely specified for protecting industrial drives, UPS systems, renewable energy converters, rectifiers, inverters and other high-power electronic equipment operating in demanding industrial environments.
| Current | 11 A |
|---|---|
| Item number | P300554 |
| Catalogue No | PC72UD13C280D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 72 aR 1250VAC IEC 1300VAC UL 280A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340330137 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 280 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 72 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 85 kA²s |
| Melting I2t | 10.3 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 | 59 mm |
| Product Length | 133.4 mm |
| Product Height | 63 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 2.1099 kg |
| Sell Pack Width | 142 mm |
| Sell Pack Length | 194 mm |
| Sell Pack Height | 72 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.7033 kg |
| Power Dissipation at Rated Current Value | 72 W |
| HS Code | 85351000 |
The P300554 is an ultra-fast semiconductor fuse designed to protect IGBTs, thyristors, diodes and other power semiconductor devices from overcurrent and short-circuit faults.
The fuse has a 280 A continuous current rating.
The P300554 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 simplified maintenance and fault indication.
It is commonly installed in industrial drives, UPS systems, converters, renewable energy equipment and other semiconductor-based power electronic installations.
Mersen Protistor® semiconductor fuses are trusted by OEMs, electrical engineers and industrial maintenance teams to provide dependable protection for high-value power electronic equipment operating in demanding industrial environments.
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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...