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MERSEN FUSE 12,5 URD 272 TTF 0630 W300721
The PC272UD13C630TF offers exceptional high-speed protection for critical power electronics, rated at 1250VAC with a robust 630A current carrying capacity. Designed in accordance with IEC standards, this fuse ensures fast-acting response and reliable safeguarding of semiconductor devices against overload and short circuit events.
£234.49
Why Choose the Mersen W300721 Protistor® High-Speed Fuse?
The Mersen W300721 (PC272UD13C630TF) is a Protistor® Size 272 high-speed square body semiconductor fuse designed to provide outstanding protection for modern power electronic equipment against destructive short-circuit currents. Engineered for demanding industrial applications, it delivers ultra-fast fault interruption and exceptional current limitation to safeguard high-value semiconductor devices.
Designed specifically for the protection of diodes, thyristors, GTOs and IGBT devices, the W300721 incorporates precision silver fuse elements embedded in solidified sand to achieve low let-through energy (I²t) and high interrupting performance. Silver-plated contact surfaces and non-magnetic hardware ensure dependable long-term operation in critical industrial environments.
The W300721 is ideally suited to OEM equipment, maintenance and replacement applications where identical electrical ratings and mounting arrangements are required. Always verify the complete part number and electrical characteristics before installation.
Key Advantages
- Ultra-fast aR semiconductor protection.
- Protects IGBTs, thyristors, GTOs and diode assemblies.
- Current-limiting design minimises damaging fault energy.
- High interrupting capacity for demanding industrial applications.
- Flush-end threaded terminal configuration.
- Manufactured by Mersen for critical power electronic systems.
Key Features
- Mersen Protistor® Size 272 square body fuse.
- Manufacturer reference W300721.
- Catalogue number PC272UD13C630TF.
- aR ultra-fast semiconductor protection characteristic.
- Flush-end threaded terminals (TF mounting).
- Low I²t construction.
- Silver-plated contact surfaces.
- Designed for high-power semiconductor protection.
Designed for High-Power Semiconductor Protection
The Mersen W300721 has been developed for demanding power conversion systems requiring rapid fault clearance. Its ultra-fast operating characteristic limits thermal and electrical stress before semiconductor devices can be damaged, helping maximise equipment reliability while reducing downtime.
Its robust ceramic square body construction, silver-plated terminals and high interrupting capability make it suitable for heavy-duty industrial installations where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial motor drives.
- Power converters.
- Industrial rectifiers.
- UPS systems.
- Renewable energy converters.
- Large inverter systems.
- High-power semiconductor protection.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Size | 2x72 mm | |
| Fuse Class | aR | |
| Voltage | 1250 V | |
| Item number | W300721 | |
| Catalogue No | PC272UD13C630TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 2x72 aR 1250VAC IEC 630A With Striker Flush ends metric threads With Omega connection | |
| EAN/UPC Code | 3605340332667 | |
| Rated voltage AC IEC | 1250 V | |
| Ampere Rating | 630 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 2x72 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 490 kA²s | |
| Melting I2t | 60 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 100 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 138.5 mm | |
| Product Length | 91 mm | |
| Product Height | 65.5 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.698 kg | |
| Sell Pack Width | 90 mm | |
| Sell Pack Length | 205 mm | |
| Sell Pack Height | 95 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 1.698 kg | |
| Power Dissipation at Rated Current Value | 160 W | |
| HS Code | 85351000 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen W300721 used for?
The W300721 is a Protistor® high-speed semiconductor fuse designed to protect IGBTs, thyristors, GTOs and diode devices against damaging short-circuit faults.
What are the electrical ratings of the W300721?
The fuse is rated at 630 A with a rated voltage of 1250 VAC (IEC) and features an ultra-fast aR operating characteristic.
What mounting arrangement does the W300721 use?
The W300721 features flush-end threaded (TF) terminals suitable for high-current industrial semiconductor protection applications.
Which equipment commonly uses the W300721?
Typical applications include industrial drives, converters, UPS systems, rectifiers, renewable energy systems and other high-power semiconductor equipment.
Can the W300721 be replaced with another fuse?
Only replace it with a fuse having identical electrical ratings, body size, mounting arrangement and semiconductor protection characteristics.
Trusted Protection from Mersen Protistor®
Mersen Protistor® high-speed semiconductor fuses are trusted worldwide for protecting critical power electronic equipment through rapid fault interruption, low let-through energy and outstanding reliability.
