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MERSEN FUSE 6,9 GRB 71 TTF 0400 PC71GB69V400TF
High-performance fuse engineered for superior protection of power semiconductors in demanding industrial environments. Rated at 400A and 690VAC to IEC standards with striker indication and flush ends metric threads.
£108.74
Why Choose the Mersen W301319 Protistor® High-Speed Fuse?
The Mersen W301319 is a genuine Protistor® square body high-speed semiconductor fuse designed to provide fast and reliable protection for sensitive power electronic equipment. Manufactured by Mersen, this 400 A, 690 V AC gR fuse is specifically engineered to protect semiconductor devices from both overloads and short-circuit faults in demanding industrial applications.
As part of the renowned Protistor® Size 71 gR series, the W301319 combines low let-through energy (I²t), high breaking capacity and excellent cycling performance to maximise equipment protection while helping minimise downtime. Its robust square body construction and silver-plated contacts ensure dependable operation in harsh industrial environments.
Featuring a 400 A current rating, 690 V AC IEC rating and flush metric threaded terminals with striker indication, the W301319 is ideally suited to protecting semiconductor devices used within inverters, variable speed drives, UPS systems and other power conversion equipment.
Key Advantages
- High-speed gR semiconductor protection fuse.
- 400 A current rating for demanding industrial applications.
- 690 V AC IEC voltage rating.
- Provides full-range protection against overloads and short circuits.
- Low I²t minimises damage to sensitive semiconductor devices.
- High interrupting capacity for reliable fault protection.
Key Features
- Mersen Protistor® Size 71 gR series.
- Part number: W301319.
- Catalogue number: PC71GB69V400TF.
- 400 A rated current.
- 690 V AC IEC rated voltage.
- Square body high-speed semiconductor fuse.
- Flush metric threaded terminals.
- Integrated striker indication.
- Silver-plated contact surfaces.
- Rated breaking capacity of 150 kA AC.
- RoHS compliant.
Reliable Protection for Power Electronics
High-speed semiconductor fuses are specifically designed to protect expensive power electronic devices by interrupting fault currents before excessive thermal energy can damage semiconductors. Their low let-through energy significantly reduces stress on IGBTs, thyristors, diodes and similar components used throughout industrial power conversion equipment.
The Mersen Protistor® range is widely used in industrial automation, renewable energy, motor drives and UPS installations where dependable semiconductor protection is critical to maintaining system availability and reducing costly equipment failures.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- UPS systems.
- Power conversion equipment.
- Semiconductor protection circuits.
- Industrial automation and motor control systems.
Technical Specifications
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| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | gR | |
| Voltage | 690 V | |
| Item number | W301319 | |
| Catalogue No | PC71GB69V400TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 71 gR 690VAC IEC 400A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340339642 | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 400 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | gR | |
| Fuse Size | 71 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 225 kA²s | |
| Melting I2t | 38.3 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 150 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 51 mm | |
| Product Length | 74 mm | |
| Product Height | 56.5 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.542 kg | |
| Sell Pack Width | 90 mm | |
| Sell Pack Length | 170 mm | |
| Sell Pack Height | 70 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.514 kg | |
| Power Dissipation at Rated Current Value | 59 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen W301319 used for?
The W301319 is a high-speed semiconductor fuse designed to protect power electronic equipment such as drives, inverters and UPS systems against overloads and short-circuit faults.
What is the current rating of the W301319?
The fuse has a 400 A rated current.
What voltage is this fuse designed for?
The Mersen W301319 is rated for 690 V AC in accordance with IEC standards.
What does the gR fuse characteristic mean?
The gR characteristic provides full-range protection for semiconductor devices by protecting against both overload and short-circuit conditions.
Which applications commonly use this fuse?
The W301319 is commonly installed in variable speed drives, power converters, industrial inverters, UPS systems and other semiconductor-based industrial equipment.
Trusted Semiconductor Protection Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, machine builders and industrial engineers worldwide for delivering reliable protection of critical power electronic equipment.
