High-speed fuse designed for critical protection of power semiconductor devices with 500A rating, integrated striker indication, and robust ceramic body.
£238.68
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.
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.
| 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 |
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.
This fuse has a 500 A rated current.
The fuse is rated for 1250 V AC (IEC) and 1300 V AC (UL).
The aR characteristic identifies an ultra-fast semiconductor protection fuse intended to provide short-circuit protection for sensitive power electronic devices.
Yes. The Z300632 incorporates an integrated striker indicator that provides visual and mechanical indication after operation.
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.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...