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MERSEN FUSE 12,5 URD 73 TT F 0450 12,5URD73TTF0450
High-speed Protistor® fuse delivering rapid and reliable circuit protection up to 450A at 1250VAC (IEC) and 1300VAC (UL) with a robust square body design and striker indication system.
£122.17
Why Choose the Mersen M300506 High Speed Semiconductor Fuse?
The Mersen M300506, catalogue number PC73UD13C450TF, is a premium Protistor® square body high speed semiconductor fuse designed to provide ultra-fast protection for sensitive power electronic equipment. Engineered specifically for semiconductor applications, it protects IGBTs, thyristors, diodes and other power semiconductor devices against damaging short circuits in demanding industrial environments.
Featuring a 450 A current rating, 1250 V AC IEC / 1300 V AC UL voltage rating and an aR operating class, the M300506 delivers exceptional fault interruption performance while limiting let-through energy to safeguard expensive electronic components. Its robust square body construction and high breaking capacity make it ideal for industrial power conversion systems.
The fuse incorporates a Size 73 square body design with flush end metric threaded terminals and an integrated striker indicator, enabling straightforward installation into compatible fuse holders and remote monitoring systems used throughout industrial electrical installations.
Key Advantages
- Ultra-fast aR semiconductor protection fuse.
- 450 A rated current for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- Low let-through energy helps minimise equipment damage.
- Integrated striker indicator for remote fuse monitoring.
- High breaking capacity for dependable fault protection.
Key Features
- Mersen Protistor® semiconductor fuse.
- Manufacturer part number: M300506.
- Catalogue number: PC73UD13C450TF.
- 450 A rated current.
- 1250 V AC IEC / 1300 V AC UL.
- aR operating class.
- Size 73 square body construction.
- Flush end metric threaded terminals.
- Integrated striker indicator.
- Silver-plated contact surfaces for reliable electrical performance.
Reliable Protection for High Power Electronics
High speed semiconductor fuses are engineered to interrupt fault currents before they can damage expensive power electronic components. Their ultra-fast operating characteristics reduce thermal stress, improve equipment reliability and help minimise costly downtime in industrial systems.
The Mersen M300506 is widely specified for industrial power conversion equipment where dependable semiconductor protection is essential for maintaining safe and efficient operation.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial power converters.
- UPS systems.
- Renewable energy inverters.
- Motor control centres.
- Industrial automation equipment.
- OEM electrical control panels.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1250 V | |
| Item number | M300506 | |
| Catalogue No | PC73UD13C450TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 450A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340329483 | |
| 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 | 73 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 290 kA²s | |
| Melting I2t | 35.5 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 | 73 mm | |
| Product Length | 74 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.22 kg | |
| Sell Pack Width | 110 mm | |
| Sell Pack Length | 125 mm | |
| Sell Pack Height | 75 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 1.22 kg | |
| Power Dissipation at Rated Current Value | 99 W | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen M300506 used for?
The M300506 is an ultra-fast semiconductor fuse designed to protect IGBTs, thyristors, diodes and other semiconductor devices from damaging short circuit faults.
What is the current rating of this fuse?
The fuse has a 450 A rated current.
What voltage is the M300506 rated for?
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL) applications.
What does the aR operating class mean?
The aR classification provides ultra-fast short circuit protection specifically for semiconductor devices while overload protection is provided elsewhere within the electrical installation.
Where is this fuse typically installed?
The M300506 is commonly installed in industrial drives, power converters, UPS systems, renewable energy equipment and other high power electronic systems.
Trusted for Industrial Semiconductor Protection
Mersen Protistor® semiconductor fuses are trusted worldwide by electrical engineers, OEM manufacturers and panel builders to provide reliable protection for critical industrial power electronic equipment.
