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MERSEN FUSE 6,9 GRB 73 TTF 0315 PC73GB69V315TF
The PC73GB69V315TF Protistor® fuse offers superior high-speed protection for critical power electronics up to 690VAC, ensuring fast fault clearing and enhanced system safety. Featuring a robust square body, striker indicator, flush ends, and metric threads for straightforward integration.
£159.74
Why Choose the Mersen W301342 Protistor® High-Speed Fuse?
The Mersen W301342 is a genuine Protistor® high-speed semiconductor fuse developed to protect sensitive power electronic components in industrial electrical systems. Its fast-acting performance helps limit damaging fault energy before excessive thermal stress reaches semiconductors such as thyristors, diodes and insulated-gate bipolar transistors.
Designed for use in demanding power conversion and motor control equipment, the W301342 supports dependable circuit protection where conventional industrial fuses may not respond quickly enough. Its robust square-body construction makes it suitable for installation in compatible fuse holders and power assemblies used throughout industrial automation environments.
The Mersen W301342 should be selected by comparing its complete electrical rating, fuse class, terminal arrangement and dimensions with the original component or authorised equipment documentation. Correct matching is essential to maintain the intended protection characteristics of the connected semiconductor equipment.
Key Advantages
- Fast-acting semiconductor protection fuse.
- Helps minimise damaging let-through energy during electrical faults.
- Designed for sensitive power electronic devices and conversion equipment.
- Robust square-body construction for industrial applications.
- Supports reliable protection of high-value semiconductor components.
- Genuine Mersen product identified by part number W301342.
Key Features
- Mersen Protistor® semiconductor fuse range.
- Manufacturer part number W301342.
- High-speed operating characteristic.
- Low let-through energy for improved semiconductor protection.
- High fault-current interruption capability.
- Square-body industrial fuse construction.
- Suitable for compatible power conversion equipment.
- Designed for installation by suitably qualified personnel.
Reliable Protection for Power Electronic Equipment
Semiconductor fuses are engineered to interrupt fault currents extremely quickly, helping protect electronic components that can be damaged by even brief periods of excessive current. Their low energy let-through characteristics make them particularly suitable for equipment containing sensitive switching devices.
The Mersen W301342 is intended for industrial systems where dependable fault protection and equipment availability are important. Before installation, the connected equipment must be safely isolated and the fuse specifications must be checked against the original design requirements.
Typical Applications
- Variable frequency drives and motor control systems.
- Industrial inverters and power converters.
- Uninterruptible power supply equipment.
- Rectifiers and semiconductor switching circuits.
- Industrial automation and production machinery.
- Power electronic maintenance and replacement applications.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | gR | |
| Voltage | 690 V | |
| Item number | W301342 | |
| Catalogue No | PC73GB69V315TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 73 gR 690VAC IEC 315A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340340013 | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 315 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gR | |
| Fuse Size | 73 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 69 kA²s | |
| Melting I2t | 11.8 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 150 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 | 74 mm | |
| Product Height | 78.5 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.22 kg | |
| Sell Pack Width | 110 mm | |
| Sell Pack Length | 130 mm | |
| Sell Pack Height | 80 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 1.22 kg | |
| Power Dissipation at Rated Current Value | 66 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen W301342 used for?
The W301342 is a high-speed fuse intended to protect sensitive semiconductor devices used in industrial power conversion, motor control and automation equipment.
Why is a high-speed fuse required for semiconductor equipment?
Semiconductors can be damaged very quickly by excessive current. A high-speed fuse limits fault energy rapidly to help protect these sensitive electronic components.
How can I confirm the electrical rating of the W301342?
The rated current, voltage and fuse characteristic should be checked on the product label or confirmed using authorised Mersen technical documentation before installation.
Can a standard industrial fuse replace the Mersen W301342?
A standard fuse should not be used unless its operating characteristics and electrical ratings have been confirmed as suitable by the equipment manufacturer or a qualified electrical engineer.
Who should install the Mersen W301342?
The fuse should be installed by a suitably qualified electrical professional following the equipment instructions, isolation procedures and applicable electrical safety regulations.
Trusted Semiconductor Protection Worldwide
Mersen Protistor® fuses are used throughout industrial power electronic applications where rapid fault interruption and dependable protection of sensitive semiconductor devices are essential.
