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MERSEN FUSE 12,5 URD 73 EF 0500 12,5URD73EF0500
High-speed fuse designed for critical protection of power semiconductor devices with 500A rating, integrated striker indication, and robust ceramic body.
£143.21
Why Choose the Mersen Z300632 Protistor® High-Speed Fuse?
The Mersen Z300632 is a high-performance Protistor® square body semiconductor protection fuse engineered to provide ultra-fast protection for sensitive power semiconductor devices in demanding industrial power conversion applications. Designed for high-voltage AC systems, it delivers rapid fault interruption to protect IGBTs, thyristors, diodes and other semiconductor components from damaging short circuits. Based on Mersen's published specifications, Z300632 corresponds to catalogue number PC73UD13C500EF.
Manufactured as part of the trusted Mersen Protistor® Size 73 aR series, this fuse features a ceramic square body construction with silver-plated open slot blade terminals and an integrated striker indicator for simplified maintenance. Its high breaking capacity and low let-through energy make it an excellent choice for modern power electronics and industrial automation systems.
With a 500 A current rating, 1250 V AC IEC / 1300 V AC UL rating and aR ultra-fast characteristic, the Z300632 is ideally suited for protecting semiconductor devices in variable speed drives, inverters, converters, UPS systems and renewable energy installations where reliable protection is essential.
Key Advantages
- High-speed Protistor® semiconductor protection fuse.
- 500 A current rating for high-power industrial applications.
- 1250 V AC IEC / 1300 V AC UL voltage rating.
- Ultra-fast aR characteristic for semiconductor protection.
- Integrated striker indicator for fuse status indication.
- High breaking capacity provides dependable fault protection.
Key Features
- Mersen Protistor® Size 73 aR series.
- Model: Z300632 / PC73UD13C500EF.
- 500 A rated current.
- 1250 V AC IEC / 1300 V AC UL rated voltage.
- Ultra-fast aR fuse characteristic.
- Ceramic square body construction.
- Silver-plated open slot blade terminals.
- Integrated striker indication system.
Reliable Protection for Power Semiconductor Equipment
Semiconductor protection fuses are designed to interrupt fault currents before costly power electronic devices can be damaged. The Mersen Protistor® range combines low I²t values with extremely rapid operation, helping minimise energy let-through while maintaining excellent protection of modern power conversion equipment.
The Z300632 is widely used wherever high-power semiconductors require dependable protection, making it suitable for industrial drives, converters, renewable energy systems and heavy-duty automation equipment operating in demanding environments.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters and converters.
- Power semiconductor protection.
- UPS and power supply systems.
- Renewable energy converters.
- Industrial automation and motor control equipment.
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 | Z300632 | |
| Catalogue No | PC73UD13C500EF | |
| Description | Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 500A With Striker Open Slot Blades | |
| EAN/UPC Code | 3605340331318 | |
| Rated voltage AC UL | 1300 V | |
| Rated voltage AC IEC | 1250 V | |
| Ampere Rating | 500 A | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 73 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 360 kA²s | |
| Melting I2t | 44 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 | Open Slot Blades | |
| Product Width | 73 mm | |
| Product Length | 149.4 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.11 kg | |
| Sell Pack Width | 110 mm | |
| Sell Pack Length | 180 mm | |
| Sell Pack Height | 80 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 1.11 kg | |
| Power Dissipation at Rated Current Value | 112 W | |
| HS Code | 85351000 |
Frequently Asked Questions
What is the Mersen Z300632 used for?
The Z300632 is a high-speed semiconductor protection fuse designed to protect IGBTs, thyristors, diodes and other power semiconductor devices in industrial power conversion equipment.
What is the current rating of the Z300632?
This fuse has a 500 A rated current.
What voltage is the fuse designed for?
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL).
What does the aR characteristic mean?
The aR characteristic identifies an ultra-fast semiconductor protection fuse intended to provide short-circuit protection for sensitive power electronic devices.
Does the fuse include a status indicator?
Yes. The Z300632 incorporates an integrated striker indicator that provides visual and mechanical indication after operation.
Trusted for Industrial Power Protection
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, electrical engineers and industrial maintenance professionals to provide reliable protection for critical power electronic equipment and high-performance automation systems.
