High-speed fuse with aR characteristic for semiconductor protection, rated 1100A at 690VAC IEC and 700VAC UL, featuring integrated striker indication and open slot blade terminals.
£255.74
The Mersen G300225 is a genuine Protistor® Size 33 aR high speed semiconductor fuse engineered to provide advanced protection for modern power electronic equipment. Designed for demanding industrial applications, this square body fuse delivers ultra-fast fault interruption to safeguard sensitive semiconductor devices including IGBTs, thyristors and diodes from damaging short circuit conditions.
With a 1100 A current rating and a 690 V AC IEC / 700 V AC UL voltage rating, the G300225 is ideally suited for industrial drives, power converters, UPS systems and renewable energy installations. Its aR ultra-fast operating characteristic helps minimise let-through energy, reducing equipment damage while improving system reliability.
Supplied under manufacturer part number G300225 and catalogue number PC33UD69V1100EF, this fuse features open slot blade terminals with an integrated striker for convenient status indication and maintenance. Silver-plated contact surfaces and high interrupting capacity make it suitable for demanding industrial environments.
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.
| Item number | G300225 |
|---|---|
| Catalogue No | PC33UD69V1100EF |
| Description | Square Body High-Speed Fuse Protistor® Size 33 aR 690VAC IEC 700VAC UL 1100A With Striker Open Slot Blades |
| EAN/UPC Code | 3605340325232 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 1100 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 33 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 1390 kA²s |
| Melting I2t | 240 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 | Open Slot Blades |
| Product Width | 73 mm |
| Product Length | 126 mm |
| Product Height | 78.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 2.556 kg |
| Sell Pack Width | 160 mm |
| Sell Pack Length | 245 mm |
| Sell Pack Height | 100 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.852 kg |
| Power Dissipation at Rated Current Value | 160 W |
| HS Code | 85361090 |
The Mersen G300225 is a high speed semiconductor fuse designed to protect power electronic equipment against short circuit and overcurrent faults.
The fuse has a 1100 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.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...