High-speed aR class fuse designed for semiconductor protection with 800A rating, 1000VAC IEC and 1100VAC UL voltage ratings, featuring a ceramic square body, integrated striker indication, and DIN 110 blades.
£222.83
The Mersen Z300563 is an industrial high-speed semiconductor fuse intended to protect sensitive power electronic equipment against damaging short-circuit currents. It is suited to applications requiring rapid fault interruption and effective current limitation to help safeguard valuable semiconductor components.
The Z300563 helps restrict the thermal and mechanical energy transferred to power electronics during an electrical fault. Its fast operating characteristics make it suitable for coordinated protection within equipment incorporating IGBTs, thyristors, diodes, rectifiers and other semiconductor switching devices.
Designed for demanding industrial environments, the Mersen Z300563 may be installed in a compatible fuse assembly within drives, converters, inverters, uninterruptible power supplies and automation equipment. The precise current rating, voltage rating, utilisation category, dimensions and terminal configuration should be verified from the original fuse markings or official Mersen technical documentation before installation.
High-speed semiconductor fuses operate more rapidly than conventional general-purpose fuses. Their fast response helps restrict the amount of fault energy reaching sensitive electronic components, where even a brief short circuit can permanently damage semiconductor junctions and associated circuitry.
Correct fuse selection is essential for coordinated circuit protection. Matching the complete Mersen reference, rated current, rated voltage, utilisation category, dimensions and terminal configuration helps maintain the intended safety, reliability and performance of the equipment.
| Current | 11 A |
|---|---|
| Item number | Z300563 |
| Catalogue No | PC72UD10C800D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 72 aR 1000VAC IEC 1100VAC UL 800A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340330311 |
| Rated voltage AC UL | 1100 V |
| Rated voltage AC IEC | 1000 V |
| Ampere Rating | 800 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 72 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 1240 kA²s |
| Melting I2t | 215.1 kA²s |
| AC Max I.R./Breaking Capacity | I1: 167 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | DIN 110 Blades |
| Product Width | 59 mm |
| Product Length | 133.4 mm |
| Product Height | 63 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 2.1099 kg |
| Sell Pack Width | 142 mm |
| Sell Pack Length | 194 mm |
| Sell Pack Height | 72 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.7033 kg |
| Power Dissipation at Rated Current Value | 146 W |
| HS Code | 85361090 |
The Mersen Z300563 is a high-speed fuse intended to protect sensitive power electronic equipment against damaging short-circuit currents.
Depending on the circuit design and protection coordination, high-speed fuses of this type may be used with equipment containing IGBTs, thyristors, diodes and rectifier assemblies.
It may be installed in a compatible fuse assembly within industrial drives, converters, inverters, UPS equipment and other semiconductor-based power systems.
No. A replacement must match the required high-speed operating characteristic, current and voltage ratings, breaking capacity, dimensions and terminal arrangement.
Check the complete Mersen reference and compare the fuse markings, equipment documentation and official Mersen technical data before installation.
Mersen high-speed fuses are widely used by equipment manufacturers, panel builders and maintenance engineers to provide dependable protection for critical power electronic systems.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...
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...