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MERSEN FUSE 5,5 URD 32 D08 A 1250 5URD32D08A1250
High-speed fuse with aR characteristic for semiconductor protection, rated at 1250A, 550VAC IEC, 600VAC UL, featuring striker indication and DIN 80 blades.
£173.10
Why Choose the Mersen G300409 Protistor® High Speed Fuse?
The Mersen G300409 is a genuine Protistor® Size 32 aR high speed semiconductor fuse engineered to provide maximum 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.
Featuring a 1250 A current rating with a 550 V AC IEC / 600 V AC UL voltage rating, the G300409 is ideal for high-power drives, industrial inverters, UPS systems and heavy-duty power conversion equipment. Its aR ultra-fast operating characteristic helps minimise let-through energy, reducing equipment damage and improving system reliability.
Supplied under manufacturer part number G300409 and catalogue number PC32UD55V1250A, this fuse features DIN 80 blade terminals with an integrated striker for convenient status indication and maintenance. Silver-plated contact surfaces and a high breaking capacity make it suitable for demanding industrial environments.
Key Advantages
- Genuine Mersen Protistor® high speed semiconductor fuse.
- 1250 A current rating for high-power industrial applications.
- 550 V AC IEC / 600 V AC UL rated operation.
- Ultra-fast aR characteristic for semiconductor protection.
- DIN 80 blade terminals with integrated striker.
- Designed to minimise equipment damage and reduce unplanned downtime.
Key Features
- Mersen Protistor® Size 32 series.
- Model G300409.
- Catalogue number PC32UD55V1250A.
- 1250 A rated current.
- 550 V AC IEC / 600 V AC UL.
- Square body fuse with DIN 80 blade terminals.
- Integrated striker indication.
- Silver-plated contacts for dependable long-term performance.
Reliable Protection for High-Power Electronics
High speed semiconductor fuses are specifically designed to protect sensitive electronic power devices requiring 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 for industrial automation, motor drives, renewable energy systems, UPS equipment and power conversion applications where dependable semiconductor protection is essential.
Typical Applications
- Variable frequency drives (VFDs).
- Industrial inverters.
- High-power UPS systems.
- Motor drives and soft starters.
- Renewable energy converters.
- Industrial power conversion equipment.
Technical Specifications
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | D / D0 (Neozed/Diazed), Semiconductor | |
| Fuse Class | aR | |
| Voltage | 550 V | |
| Item number | G300409 | |
| Catalogue No | PC32UD55V1250A | |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 550VAC IEC 600VAC UL 1250A With Striker DIN 80 Blades | |
| EAN/UPC Code | 3605340327977 | |
| Rated voltage AC UL | 600 V | |
| Rated voltage AC IEC | 550 V | |
| Ampere Rating | 1250 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Speed/Characteristic | aR | |
| Fuse Size | 32 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 1950 kA²s | |
| Melting I2t | 410 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | DIN 80 Blades | |
| Product Width | 59 mm | |
| Product Length | 110 mm | |
| Product Height | 65 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.5879 kg | |
| Sell Pack Width | 140 mm | |
| Sell Pack Length | 195 mm | |
| Sell Pack Height | 75 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.5293 kg | |
| Power Dissipation at Rated Current Value | 180 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
Frequently Asked Questions
What is the Mersen G300409 used for?
The Mersen G300409 is a high speed semiconductor fuse designed to protect high-power electronic equipment against short-circuit and overcurrent faults.
What is the current rating of this fuse?
The fuse has a 1250 A current rating.
What voltage is the G300409 rated for?
It is rated for 550 V AC (IEC) and 600 V AC (UL).
What does the aR characteristic mean?
The aR operating characteristic provides ultra-fast protection specifically for semiconductor devices including IGBTs, thyristors and diodes.
Where is this fuse commonly installed?
It is commonly installed in industrial drives, UPS systems, power converters and other high-power semiconductor applications.
Trusted by Industrial Engineers Worldwide
Mersen Protistor® semiconductor fuses are trusted by OEMs, panel builders and maintenance engineers worldwide for reliable protection of critical power electronic equipment in demanding industrial environments.
