High-speed aR characteristic fuse for semiconductor protection rated at 280A, 1250VAC IEC and 1300VAC UL with striker indication and flush ends with metric threads.
£137.84
The Mersen P300715 is a premium Protistor® Size 71 high-speed semiconductor fuse engineered to provide ultra-fast protection for modern power electronic equipment. Designed for demanding industrial applications, it protects diodes, thyristors and IGBT devices against damaging short-circuit and overcurrent conditions while helping maximise equipment reliability and minimise downtime.
As part of the Mersen Protistor® Size 71 series, the P300715 features a square ceramic body with flush ends and metric threaded terminals together with an integrated striker indicator. Die-cut silver fuse elements embedded in solidified sand provide exceptionally low let-through energy and high interrupting performance for critical semiconductor protection applications.
Rated at 280 A with a 1250 V AC (IEC) / 1300 V AC (UL) voltage rating, the P300715 is ideally suited to industrial drives, UPS systems, renewable energy equipment, power converters and other high-performance electrical installations requiring dependable semiconductor protection.
The Mersen P300715 has been developed for demanding power conversion equipment where semiconductor devices require rapid fault clearance. Its low I²t performance helps minimise thermal stress during fault conditions, reducing the risk of costly equipment damage while extending the service life of protected components.
Suitable for OEM installations and maintenance replacements, the P300715 provides dependable protection in industrial environments where high-speed semiconductor protection is essential for safe and reliable operation.
| Item number | P300715 |
|---|---|
| Catalogue No | PC71UD13C280TF |
| Description | Square Body High-Speed Fuse Protistor® Size 71 aR 1250VAC IEC 1300VAC UL 280A With Striker Flush ends metric threads |
| EAN/UPC Code | 3605340332575 |
| 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 | 71 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 96 kA²s |
| Melting I2t | 12 kA²s |
| 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 | 51 mm |
| Product Length | 74 mm |
| Product Height | 56.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.545 kg |
| Sell Pack Width | 90 mm |
| Sell Pack Length | 170 mm |
| Sell Pack Height | 70 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.515 kg |
| Power Dissipation at Rated Current Value | 68 W |
| HS Code | 85351000 |
The P300715 is an ultra-fast semiconductor fuse designed to protect diodes, thyristors and IGBT devices against short-circuit and overcurrent faults.
The Mersen P300715 has a continuous current rating of 280 A.
The fuse is rated at 1250 V AC (IEC) and 1300 V AC (UL).
Yes. It incorporates an integrated striker indicator that can be used with a compatible microswitch for remote indication and maintenance monitoring.
The P300715 is commonly installed in industrial drives, power converters, UPS systems, renewable energy equipment and other semiconductor-based power conversion systems.
Mersen Protistor® semiconductor fuses are trusted by OEMs, electrical engineers and industrial maintenance teams worldwide for reliable protection of high-value power electronic equipment.
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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...