Engineered for critical protection in power electronics, the Protistor® PC72UD13C350EF offers rapid response and reliable current interruption at 1250VAC IEC (1300VAC UL), safeguarding sensitive equipment from damaging overloads and short circuits.
£216.42
The Mersen L300620, catalogue number PC72UD13C350EF, is a Protistor® Size 72 square body high-speed semiconductor fuse engineered to provide exceptional protection for high-power semiconductor equipment. Featuring an ultra-fast aR operating characteristic, it delivers outstanding short-circuit protection for IGBTs, thyristors, diodes and other sensitive semiconductor devices used in modern power conversion systems.
Designed for demanding industrial environments, the L300620 combines low let-through energy with high interrupting capacity to minimise semiconductor damage during fault conditions. Precision die-cut fuse elements embedded in solidified sand provide controlled arc extinction, while silver-plated contacts and non-magnetic hardware ensure dependable long-term performance. The fuse features EF open-slot blade terminals with an integrated striker for optional remote indication.
Rated at 350 A, with 1250 V AC (IEC) and 1300 V AC (UL) voltage ratings, the Mersen L300620 is ideally suited to industrial drives, renewable energy converters, UPS systems, traction equipment and other high-power semiconductor applications.
Protistor® semiconductor fuses are specifically engineered to interrupt high fault currents before expensive semiconductor devices suffer catastrophic damage. Their ultra-fast response and low energy let-through characteristics maximise equipment reliability while reducing maintenance costs across demanding industrial power conversion systems.
The robust square body construction, precision fuse elements, silver-plated contacts and integrated striker make the Mersen L300620 an excellent choice for protecting high-power converters, industrial drives and renewable energy systems requiring dependable semiconductor protection.
| Item number | L300620 |
|---|---|
| Catalogue No | PC72UD13C350EF |
| Description | Square Body High-Speed Fuse Protistor® Size 72 aR 1250VAC IEC 1300VAC UL 350A With Striker Open Slot Blades |
| EAN/UPC Code | 3605340331080 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 350 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 72 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 170 kA²s |
| Melting I2t | 21 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 | Open Slot Blades |
| Product Width | 59 mm |
| Product Length | 149.4 mm |
| Product Height | 63 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 2.274 kg |
| Sell Pack Width | 157 mm |
| Sell Pack Length | 205 mm |
| Sell Pack Height | 80 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.758 kg |
| Power Dissipation at Rated Current Value | 77 W |
| HS Code | 85351000 |
The Mersen L300620 is a high-speed semiconductor protection fuse designed to protect IGBTs, thyristors, diodes and other sensitive semiconductor devices from damaging short-circuit currents.
The Mersen L300620 has a rated current of 350 A.
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL).
The L300620 features EF open-slot blade terminals with an integrated striker for secure installation and optional remote indication.
It is commonly used in industrial drives, converters, renewable energy systems, UPS equipment and other high-power semiconductor applications requiring ultra-fast protection.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, electrical engineers and industrial maintenance professionals to provide dependable protection for high-performance power electronic systems.
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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...