The PC72UD13C280EF fuse provides high-speed interruption for power semiconductor protection with a 280A rating and dual IEC/UL voltage certifications. Features striker indication and open slot blade terminals for reliable industrial use.
£173.89
The Mersen J300618 is a premium Protistor® Size 72 aR square body high-speed semiconductor fuse engineered to provide exceptional protection for modern power conversion equipment. Designed specifically to safeguard sensitive semiconductor devices, it delivers ultra-fast fault interruption and outstanding current limiting to protect IGBTs, thyristors, diodes and rectifiers from damaging short-circuit currents.
As part of Mersen's trusted Protistor® semiconductor fuse range, the J300618 features silver-plated contact surfaces, solidified sand technology for controlled arc characteristics and an integrated striker for remote indication. Its robust construction ensures dependable performance in demanding industrial environments while helping reduce equipment downtime and maintenance costs.
Rated at 280 A with a 1250 V AC IEC / 1300 V AC UL voltage rating, the J300618 is ideal for industrial drives, converters, inverters, UPS systems, renewable energy installations and other high-power semiconductor applications requiring reliable circuit protection.
High-speed semiconductor fuses are engineered to interrupt fault currents before excessive thermal or electrical energy reaches sensitive semiconductor devices. Their low let-through energy helps improve equipment reliability while reducing maintenance costs and unplanned downtime.
The Mersen Protistor® Size 72 range is trusted worldwide by OEMs, panel builders and industrial engineers for demanding power conversion applications where dependable semiconductor protection is essential.
| Item number | J300618 |
|---|---|
| Catalogue No | PC72UD13C280EF |
| Description | Square Body High-Speed Fuse Protistor® Size 72 aR 1250VAC IEC 1300VAC UL 280A With Striker Open Slot Blades |
| EAN/UPC Code | 3605340331042 |
| 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 | 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 | 72 W |
| HS Code | 85351000 |
The J300618 is designed to protect power semiconductor devices such as IGBTs, thyristors, rectifiers and diodes from damaging short-circuit currents.
The fuse has a rated current of 280 A for industrial semiconductor protection applications.
It is rated for 1250 V AC (IEC) and 1300 V AC (UL) systems.
The aR operating characteristic provides ultra-fast short-circuit protection specifically for semiconductor devices without overload protection.
It is commonly installed in industrial drives, converters, UPS systems, renewable energy equipment and other power conversion applications.
Mersen Protistor® semiconductor fuses are trusted worldwide for delivering dependable, ultra-fast protection for industrial power electronics, helping maximise equipment availability and protect valuable semiconductor devices.
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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...