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MERSEN FUSE 12,5 URD 72 D11 A 0450 12,5URD72D11A0450
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.
£111.10
Why Choose the Mersen T300558 High-Speed Fuse?
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.
Key Advantages
- High-speed semiconductor protection for sensitive power electronic components.
- Rapid fault interruption helps minimise damaging let-through energy.
- Effective current limitation during high short-circuit conditions.
- Robust construction for demanding industrial environments.
- Suitable for power conversion, motor control and automation equipment.
- Manufactured by Mersen for dependable electrical protection performance.
Key Features
- Mersen high-speed fuse technology.
- Designed for semiconductor and power electronics protection.
- Fast operating characteristics for rapid fault clearance.
- Low energy let-through helps protect valuable components.
- Industrial fuse body designed for secure mounting.
- Suitable for AC power conversion and control systems.
- Reliable performance in high-current electrical installations.
- Suitable for OEM equipment and replacement applications.
Reliable Protection for Power Electronic Equipment
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.
Typical Applications
- Variable frequency drives and motor control equipment.
- Industrial power converters and rectifiers.
- Uninterruptible power supply systems.
- Renewable energy inverters and power conditioning equipment.
- Industrial automation and production machinery.
- Semiconductor power modules and control cabinets.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1250 V | |
| 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 |
Frequently Asked Questions
What is the Mersen T300558 used for?
The Mersen T300558 is used to provide high-speed overcurrent and short-circuit protection for semiconductor devices and industrial power electronic equipment.
Which components can the T300558 protect?
It is designed for the protection of sensitive components including IGBTs, thyristors, rectifier diodes and power semiconductor modules.
Why is a high-speed fuse required for semiconductor equipment?
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.
Where is the Mersen T300558 commonly installed?
It is commonly installed within industrial control cabinets, power conversion assemblies, motor drives, UPS systems and renewable energy equipment.
Can the T300558 be used as a replacement fuse?
Yes, provided that the fuse ratings, dimensions, operating class and connection arrangement match the requirements of the original equipment and electrical installation.
Trusted by Power Electronics Engineers Worldwide
Mersen high-speed fuses are widely specified by industrial engineers, equipment manufacturers and maintenance professionals for dependable protection of sensitive power electronic systems.
