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MERSEN FUSE 12,5 URD 73 TT F 0630 12,5URD73TTF0630
High-speed fuse designed for reliable circuit protection in industrial and power electronics applications, rated at 630A, 1250VAC IEC, 1300VAC UL, with striker indication and flush end silver-plated brass terminals.
£139.82
Why Choose the Mersen Q300509 Protistor® High-Speed Fuse?
The Mersen Q300509 (PC73UD13C630TF) is a high-performance square body semiconductor protection fuse engineered to provide exceptional protection for sensitive power electronic devices. Part of the renowned Mersen Protistor® Size 73 series, this ultra-fast acting aR fuse is specifically designed to safeguard diodes, thyristors, IGBTs and other semiconductor components in demanding industrial power conversion applications.
Designed for reliability and rapid fault interruption, the Q300509 delivers outstanding current limitation and low let-through energy, helping to minimise damage to expensive semiconductor equipment. Its silver-plated contacts, robust ceramic body and high breaking capacity ensure dependable operation in challenging industrial environments.
With a 630 A current rating and 1250 V AC IEC / 1300 V AC UL voltage rating, the Mersen Q300509 is ideally suited for high-power drives, UPS systems, renewable energy equipment, DC drives and industrial power converters where fast semiconductor protection is essential.
Key Advantages
- Ultra-fast aR semiconductor protection fuse for sensitive electronic equipment.
- 630 A current rating for demanding industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Protects IGBTs, thyristors, diodes and other semiconductor devices.
- Low I²t performance helps minimise equipment damage during faults.
- Robust square body construction for long service life and reliable operation.
Key Features
- Mersen Protistor® Size 73 series.
- Catalogue number: PC73UD13C630TF.
- 630 A rated current.
- 1250 V AC (IEC) / 1300 V AC (UL).
- Ultra-fast aR operating characteristic.
- Square body fuse with flush ends and metric threaded connections.
- Integrated striker indicator.
- Silver-plated contact surfaces for excellent conductivity.
Reliable Protection for Power Electronics
Semiconductor protection fuses are specifically engineered to interrupt high fault currents before sensitive electronic components can be damaged. Their ultra-fast operating characteristics provide significantly lower let-through energy than conventional industrial fuses, making them ideal for protecting high-value power conversion equipment.
The Mersen Protistor® range is trusted worldwide across industrial automation, renewable energy, UPS systems and motor drive applications, delivering dependable protection for critical semiconductor devices while reducing costly downtime.
Typical Applications
- Variable speed drives (VSDs).
- Industrial motor drives.
- Power converters and inverters.
- UPS and backup power systems.
- Renewable energy equipment.
- Protection of IGBTs, thyristors and power semiconductors.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 1250 V | |
| Item number | Q300509 | |
| Catalogue No | PC73UD13C630TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 630A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340329544 | |
| Rated voltage AC UL | 1300 V | |
| Rated voltage AC IEC | 1250 V | |
| Ampere Rating | 630 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 73 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 680 kA²s | |
| Melting I2t | 84 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 | 125 W | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen Q300509 used for?
It is an ultra-fast semiconductor protection fuse designed to protect IGBTs, thyristors, diodes and other sensitive power electronic components.
What current rating does this fuse have?
The Mersen Q300509 has a 630 A current rating.
What voltage is this fuse rated for?
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL).
What does the aR fuse characteristic mean?
The aR characteristic provides ultra-fast protection specifically for semiconductor devices against short-circuit faults while allowing normal operating currents.
Which applications commonly use this fuse?
It is commonly installed in variable speed drives, power converters, UPS systems, renewable energy equipment and industrial power electronics requiring semiconductor protection.
Trusted for Industrial Semiconductor Protection
Mersen Protistor® semiconductor fuses are widely specified by engineers and OEMs worldwide to provide fast, reliable protection for high-value power electronic equipment operating in demanding industrial environments.
