High-speed Protistor® fuse with 500A rating and 690VAC (IEC) / 700VAC (UL) voltage compatibility, featuring DIN 80 blade contacts and integrated striker indication for semiconductor protection.
£170.26
The Mersen G300248 is a genuine Protistor® Size 33 aR high speed semiconductor fuse designed to provide exceptional protection for modern power electronic equipment. Engineered for demanding industrial applications, this square body fuse delivers ultra-fast fault interruption to protect sensitive semiconductor devices including IGBTs, thyristors and diodes against damaging short-circuit conditions.
With a 500 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the G300248 is ideally suited to industrial drives, inverters, UPS systems and renewable energy power conversion equipment. Its aR ultra-fast operating characteristic helps minimise let-through energy, reducing equipment damage while improving system reliability and availability.
Supplied under manufacturer part number G300248 and catalogue number PC33UD69V500A, this fuse features DIN 80 blade terminals with an integrated striker indication. It is designed for OEM installations and industrial maintenance where dependable semiconductor protection is essential.
High speed semiconductor fuses are specifically designed to protect sensitive electronic power devices that require extremely rapid fault interruption. Their low let-through energy helps safeguard expensive semiconductor assemblies while maintaining reliable system operation and reducing maintenance costs.
The Mersen Protistor® range is widely specified in industrial automation, motor drives, renewable energy systems, UPS equipment and power conversion applications where dependable semiconductor protection is essential.
| Current | 08 A |
|---|---|
| Item number | G300248 |
| Catalogue No | PC33UD69V500A |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 500A With Striker DIN 80 Blades |
| EAN/UPC Code | 3605340325690 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 500 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 33 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 110 kA²s |
| Melting I2t | 19 kA²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Design Details | Standard Terminal |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | DIN 80 Blades |
| Product Width | 73 mm |
| Product Length | 110 mm |
| Product Height | 78.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 2.4369 kg |
| Sell Pack Width | 145 mm |
| Sell Pack Length | 250 mm |
| Sell Pack Height | 90 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.8123 kg |
| Power Dissipation at Rated Current Value | 105 W |
| HS Code | 85361090 |
The Mersen G300248 is a high speed semiconductor fuse designed to protect power electronic equipment against short-circuit and overcurrent faults.
The fuse has a 500 A current rating.
It is rated for 690 V AC (IEC) and 700 V AC (UL).
The aR operating characteristic provides ultra-fast protection specifically for semiconductor devices such as IGBTs, thyristors and diodes.
It is commonly installed in industrial drives, inverters, UPS systems, renewable energy equipment and other power conversion applications.
Mersen Protistor® semiconductor fuses are trusted by OEMs, panel builders and maintenance engineers for reliable protection of critical power electronic equipment in demanding industrial environments.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...