The PC72UD13C450D1A offers robust circuit protection for demanding industrial and power electronics applications, featuring rapid response to overcurrent events to safeguard critical components. Engineered for operation up to 1250VAC (IEC) and 1300VAC (UL) with a 450A rating, it ensures dependable performance and minimal let-through energy during faults.
£185.16
The Mersen T300558 is a robust high-speed semiconductor fuse designed to protect sensitive power electronic equipment against damaging short-circuit and overcurrent conditions. Manufactured by Mersen, a recognised specialist in electrical protection, this fuse is suitable for demanding industrial systems where rapid fault interruption and dependable current limitation are essential.
The T300558 is engineered for applications incorporating semiconductor components such as IGBTs, thyristors, rectifier diodes and power conversion modules. Its fast operating characteristics help reduce the electrical and thermal energy passed into protected components during a fault, supporting improved equipment reliability and reduced downtime.
Featuring a durable industrial construction, the Mersen T300558 is suitable for integration into power converters, motor drives, UPS equipment, renewable energy systems and industrial automation installations. Its compact fuse body and secure connection arrangement support reliable installation within electrical cabinets and power distribution assemblies.
Semiconductor devices can be damaged by fault currents in a fraction of a second. High-speed fuses such as the Mersen T300558 are designed to respond rapidly, interrupting excessive current before damaging energy can pass through sensitive electronic components.
By limiting peak current and total let-through energy, the T300558 helps protect power modules while reducing the risk of secondary damage to surrounding equipment. This makes it a practical protection solution for industrial systems where equipment uptime and reliable operation are critical.
| Current | 11 A |
|---|---|
| Item number | T300558 |
| Catalogue No | PC72UD13C450D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 72 aR 1250VAC IEC 1300VAC UL 450A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340330212 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 450 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 72 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 360 kA²s |
| Melting I2t | 44.2 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 | 89 W |
| HS Code | 85351000 |
The Mersen T300558 is used to provide high-speed overcurrent and short-circuit protection for semiconductor devices and industrial power electronic equipment.
It is designed for the protection of sensitive components including IGBTs, thyristors, rectifier diodes and power semiconductor modules.
Semiconductor components can be damaged very quickly during an electrical fault. A high-speed fuse interrupts the current rapidly and limits the energy reaching the protected equipment.
It is commonly installed within industrial control cabinets, power conversion assemblies, motor drives, UPS systems and renewable energy equipment.
Yes, provided that the fuse ratings, dimensions, operating class and connection arrangement match the requirements of the original equipment and electrical installation.
Mersen high-speed fuses are widely specified by industrial engineers, equipment manufacturers and maintenance professionals for dependable protection of sensitive power electronic systems.
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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...