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MERSEN FUSE 6,9 URD 32 E F 0450 6,9URD32EF0450
High-speed aR characteristic fuse for semiconductor protection rated at 690VAC IEC and 700VAC UL with 450A current rating, striker indication and open slot blade terminals.
£95.93
Why Choose the Mersen W300169 Protistor® Fuse?
The Mersen W300169 is a specialist high-speed semiconductor fuse designed to protect sensitive power electronic components against damaging short-circuit currents. As part of the established Mersen Protistor® range, it provides rapid fault interruption and effective current limitation for demanding industrial electrical applications.
Power semiconductor devices can be damaged by excessive electrical and thermal energy within a fraction of a second. The Mersen W300169 is engineered to respond considerably faster than a conventional industrial fuse, helping reduce the let-through energy reaching diodes, thyristors, rectifiers, IGBTs and associated power modules.
The W300169 is suitable for maintenance, repair and OEM replacement requirements in industrial drives, converters, inverters and power supplies. For safe product selection, the complete reference and all electrical ratings should be matched against the original fuse label, equipment manual or applicable Mersen technical documentation before installation.
Key Advantages
- High-speed fuse designed for semiconductor protection.
- Rapid fault interruption helps protect sensitive power components.
- Current-limiting performance reduces damaging let-through energy.
- Supports reliable operation of industrial power conversion equipment.
- Suitable for maintenance, repair and OEM replacement applications.
- Manufactured by Mersen, a specialist in electrical protection technology.
Key Features
- Mersen Protistor® semiconductor fuse range.
- Manufacturer reference W300169.
- High-speed short-circuit protection characteristic.
- Designed for 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 an appropriately rated fuse mounting arrangement.
- Intended for professional industrial installation and replacement.
Reliable Protection for Industrial Power Electronics
High-speed semiconductor fuses are designed to interrupt fault currents before excessive heat and electrical stress can permanently damage valuable power electronic components. Effective current limitation also helps reduce secondary damage within associated busbars, cables, contactors and control equipment.
The Mersen W300169 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 rating of the protected semiconductor 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 | W300169 | |
| Catalogue No | PC32UD69V450EF | |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 450A With Striker Open Slot Blades | |
| EAN/UPC Code | 3605340324167 | |
| Rated voltage AC UL | 700 V | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 450 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 32 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 130 kA²s | |
| Melting I2t | 22 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Open Slot Blades | |
| Product Width | 59 mm | |
| Product Length | 126 mm | |
| Product Height | 65 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.7148 kg | |
| Sell Pack Width | 160 mm | |
| Sell Pack Length | 202 mm | |
| Sell Pack Height | 80 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.5716 kg | |
| Power Dissipation at Rated Current Value | 80 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen W300169 used for?
The Mersen W300169 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 W300169?
It may be used in appropriately rated variable speed drives, converters, inverters, rectifiers, industrial power supplies and other systems containing sensitive semiconductor components.
Can the W300169 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 W300169?
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 Protistor® fuses are used in industrial power electronic systems where rapid fault interruption, effective current limitation and dependable semiconductor protection are essential.
