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MERSEN FUSE A 070 URD 32 TTI 0900 A070URD32TTI0900
High-speed fuse offering reliable circuit protection for industrial and power electronics applications, rated 900A at 690VAC IEC and 700VAC UL with striker flush ends and UNC threads.
£136.91
Why Choose the Mersen W300468 High-Speed Semiconductor Fuse?
The Mersen W300468 is a specialist high-speed semiconductor fuse intended to protect sensitive power electronic components against damaging short-circuit currents. Designed for demanding industrial electrical systems, it provides rapid fault interruption and effective current limitation to help safeguard valuable semiconductor devices and associated equipment.
Power semiconductors can be permanently damaged by excessive electrical and thermal energy within a fraction of a second. The Mersen W300468 is designed for applications that require faster fault response than conventional general-purpose fuses, helping reduce peak current and the amount of let-through energy reaching diodes, thyristors, rectifiers, IGBTs and power conversion modules.
The W300468 is suitable for maintenance, repair and OEM replacement requirements involving industrial drives, converters, inverters and power supplies. Before installation, the complete product reference, rated current, rated voltage, utilisation category, breaking capacity, terminal arrangement and physical dimensions should be verified against the original fuse marking or applicable Mersen technical documentation.
Key Advantages
- High-speed fuse designed for semiconductor protection.
- Rapid short-circuit interruption helps protect sensitive power components.
- Current-limiting performance reduces damaging let-through energy.
- Supports dependable operation of industrial power conversion equipment.
- Suitable for maintenance, repair and OEM replacement applications.
- Manufactured by Mersen, a specialist in industrial electrical protection.
Key Features
- Mersen high-speed semiconductor fuse.
- Manufacturer reference W300468.
- Designed for rapid short-circuit fault interruption.
- Supports coordinated protection of power semiconductor devices.
- Helps limit thermal and electrical stress during fault conditions.
- Suitable for drives, converters, rectifiers and industrial power supplies.
- Compatible with the correctly rated fuse holder or mounting assembly.
- Intended for professional industrial installation and replacement.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are engineered to interrupt fault currents before excessive heat and electrical stress can permanently damage power electronic components. Effective current limitation can also help reduce secondary damage to connected busbars, cables, contactors and control equipment.
The Mersen W300468 should be selected as part of a properly coordinated electrical protection system. Circuit voltage, continuous operating current, prospective short-circuit current, ambient temperature, mounting conditions and the energy withstand capability of the protected semiconductor devices must all be considered.
Typical Applications
- Variable frequency drives and motor control systems.
- Industrial power converters.
- Rectifier and inverter assemblies.
- Uninterruptible power supply systems.
- Industrial automation machinery.
- Semiconductor switching circuits.
- Power distribution and control panels.
- OEM power electronic equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | W300468 | |
| Catalogue No | A070UD32TTI900 | |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 900A With Striker Flush ends UNC threads | |
| EAN/UPC Code | 3605340328950 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 900 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 32 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 990 kA²s | |
| Melting I2t | 165 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Design Details | Reinforced Terminal | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 59 mm | |
| Product Length | 50.6 mm | |
| Product Height | 65 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.8099 kg | |
| Sell Pack Width | 145 mm | |
| Sell Pack Length | 245 mm | |
| Sell Pack Height | 90 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.6033 kg | |
| Power Dissipation at Rated Current Value | 110 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen W300468 used for?
The Mersen W300468 is used to provide high-speed short-circuit protection for semiconductor devices installed in industrial power electronic equipment.
What types of equipment can use the W300468?
It may be used in appropriately rated variable frequency drives, converters, inverters, rectifiers, industrial power supplies and other systems containing sensitive semiconductor components.
Can the W300468 be replaced with a standard industrial fuse?
A standard fuse should not be used as a substitute unless its voltage, current, breaking capacity, mounting format and semiconductor protection performance have been verified as equivalent.
How should the correct electrical rating be verified?
Check the current, voltage, utilisation category and breaking-capacity markings on the original fuse, then compare them with the equipment manual or applicable Mersen technical documentation.
Who should install the Mersen W300468?
The fuse should be selected and installed by a qualified electrical professional familiar with high-speed semiconductor protection and the relevant industrial equipment.
Trusted Semiconductor Protection from Mersen
Mersen high-speed fuses are used in industrial power electronic systems where rapid fault interruption, effective current limitation and dependable semiconductor protection are essential.
