High-speed fuse with gR characteristic for semiconductor and cable protection, rated 450A at 690VAC with integrated striker and DIN 110 blade terminals.
£186.11
The Mersen Q302671 (PC72GB69V450D1A) is a premium Protistor® Size 72 gR square body high-speed fuse designed to provide full-range protection for power semiconductor devices and associated equipment. Engineered for demanding industrial power conversion applications, it delivers rapid fault interruption while protecting both semiconductor devices and associated cabling from overloads and short circuits.
Manufactured using pure silver fuse elements embedded in solidified sand with silver-plated contacts, the Q302671 offers excellent cycling capability, low I²t characteristics and high interrupting capacity. Its integrated striker indicator simplifies maintenance and allows remote status indication when used with an optional microswitch.
Rated at 450 A and 690 V AC, this Protistor® gR fuse is ideally suited to protecting industrial inverters, motor drives, UPS systems and other power conversion equipment requiring dependable semiconductor protection.
The Protistor® Size 72 gR range has been engineered to provide complete protection for modern semiconductor equipment. The full-range gR characteristic protects both semiconductor devices and associated conductors from overloads and short-circuit faults, reducing maintenance costs while improving system reliability.
These high-performance fuses are widely used throughout industrial automation, renewable energy, motor drives, UPS installations and power conversion equipment where dependable semiconductor protection is critical.
| Current | 11 A |
|---|---|
| Item number | Q302671 |
| Catalogue No | PC72GB69V450D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 72 gR 690VAC IEC 450A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340355093 |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 450 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | gR |
| Fuse Size | 72 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 280 kA²s |
| Melting I2t | 47.3 kA²s |
| AC Max I.R./Breaking Capacity | I1: 150 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | DIN 110 Blades |
| Product Width | 59 mm |
| Product Length | 133.4 mm |
| Product Height | 63 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 2.1999 kg |
| Sell Pack Width | 145 mm |
| Sell Pack Length | 73 mm |
| Sell Pack Height | 195 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.7333 kg |
| Power Dissipation at Rated Current Value | 70 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The Q302671 provides full-range protection for semiconductor devices and associated equipment in industrial power conversion applications.
The Mersen Q302671 has a rated current of 450 A.
The gR operating characteristic provides full-range protection against both overloads and short circuits for semiconductor equipment.
Yes. The fuse incorporates an integrated striker indicator which can also operate an optional microswitch for remote indication.
It is commonly installed in industrial drives, inverters, UPS systems, converters and other semiconductor power conversion equipment.
Mersen Protistor® semiconductor fuses are trusted worldwide by OEMs, machine builders and industrial engineers for delivering dependable protection in demanding power electronic applications.
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2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...