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MERSEN FUSE A070 URD 33 TTI 0630 A070URD33TTI0630
High-speed aR characteristic fuse designed for semiconductor protection, rated 630A at 690VAC (IEC) and 700VAC (UL) with flush striker ends and UNC threaded terminals.
£114.66
Why Choose the Mersen Z300448 High-Speed Semiconductor Fuse?
The Mersen Z300448 is an industrial high-speed semiconductor fuse intended for the protection of sensitive power electronic equipment against damaging short-circuit currents. It is suitable for systems where rapid fault interruption and effective current limitation are required to help safeguard valuable semiconductor components.
The Z300448 is designed to limit the thermal and mechanical energy transferred to power electronics during an electrical fault. Its high-speed operating characteristics make it suitable for the coordinated protection of semiconductor-based equipment incorporating components such as IGBTs, thyristors, diodes and rectifier assemblies.
Suitable for demanding industrial environments, the Mersen Z300448 may be used within compatible fuse assemblies in drives, converters, inverters, uninterruptible power supplies and automation equipment. Exact electrical ratings, dimensions, utilisation category and terminal configuration should be verified from the fuse markings or official Mersen technical documentation before installation.
Key Advantages
- High-speed protection for sensitive industrial power electronics.
- Rapid short-circuit interruption helps minimise semiconductor damage.
- Current-limiting performance reduces damaging let-through energy.
- Suitable for coordinated protection within power conversion equipment.
- Industrial-grade construction for demanding applications.
- Helps reduce repair costs and unplanned equipment downtime.
Key Features
- Genuine Mersen fuse reference Z300448.
- High-speed operating response during short-circuit conditions.
- Designed for power semiconductor protection applications.
- Effective current limitation to reduce thermal and mechanical stress.
- Suitable for industrial power conversion and control equipment.
- Compatible with correctly specified Mersen fuse assemblies.
- Suitable for OEM, maintenance and replacement requirements.
- Engineered for reliable performance in critical electrical systems.
Reliable Protection for Power Electronics
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.
Typical Applications
- Variable frequency drives and industrial motor drives.
- Power converters and rectifier systems.
- Industrial inverters and switching equipment.
- Uninterruptible power supplies and backup power systems.
- Renewable energy power conversion equipment.
- Industrial automation and electrical control panels.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | Z300448 | |
| Catalogue No | A070UD33TTI630 | |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 630A With Striker Flush ends UNC threads | |
| EAN/UPC Code | 3605340328554 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 630 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 33 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 230 kA²s | |
| Melting I2t | 40 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | Standard Terminal | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 73 mm | |
| Product Length | 50.6 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 2.682 kg | |
| Sell Pack Width | 86 mm | |
| Sell Pack Length | 247 mm | |
| Sell Pack Height | 94 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.894 kg | |
| Power Dissipation at Rated Current Value | 110 W | |
| HS Code | 85361090 |
Frequently Asked Questions
What is the Mersen Z300448 used for?
The Mersen Z300448 is a high-speed fuse intended to protect sensitive power electronic equipment against damaging short-circuit currents.
Which components can the Z300448 help protect?
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.
Where is the Mersen Z300448 typically installed?
It may be installed in a compatible fuse assembly within industrial drives, converters, inverters, UPS equipment and other semiconductor-based power systems.
Can a general-purpose fuse replace the Mersen Z300448?
No. A replacement must match the required high-speed operating characteristic, current and voltage ratings, breaking capacity, dimensions and terminal arrangement.
How should compatibility be confirmed?
Check the complete Mersen reference and compare the fuse markings, equipment documentation and official Mersen technical data before installation.
Trusted for Industrial Power Protection
Mersen high-speed fuses are widely used by equipment manufacturers, panel builders and maintenance engineers to provide dependable protection for critical power electronic systems.
