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MERSEN FUSE 12,5 URD 73 EF 0550 12,5URD73EF0550
MPN: A300633
Alt. SKU: PC73UD13C550EF
Special Price
£147.84
£123.20
Regular Price
£268.80
Why Choose the Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 550A With Striker Open Slot Blades PC73UD13C550EF?
Engineered for superior circuit protection, the Square Body High-Speed Fuse Protistor® Size 73 offers fast and reliable interruption of fault currents up to 550A, ensuring optimal safety for semiconductor and power conversion applications. Designed to meet IEC and UL standards, it supports system voltages up to 1250VAC IEC and 1300VAC UL for global compatibility.
Featuring robust open slot blades with an integrated striker, this fuse enables remote indication and easy fitment, streamlining maintenance in high-demand industrial environments. Its compact, square body design facilitates efficient installation while delivering consistent, high-performance protection for your critical systems.
Technical Specifications
- Item number: A300633
- Catalogue No: PC73UD13C550EF
- Description: Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 550A With Striker Open Slot Blades
- EAN/UPC Code: 3605340331332
- Rated voltage AC UL: 1300 V
- Rated voltage AC IEC: 1250 V
- Ampere Rating: 550 A
- AC or DC: AC
- Speed/Characteristic: aR
- Fuse Size: 73
- Mounting: Bolted
- Clearing I2t At Rated Voltage: 465 kA²s
- Melting I2t: 57 kA²s
- AC Max I.R./Breaking Capacity: I1: 126 kA
- 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: 149.4 mm
- Product Height: 78.5 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 1.11 kg
- Sell Pack Width: 110 mm
- Sell Pack Length: 180 mm
- Sell Pack Height: 80 mm
- Product group: Semiconductor Protection Fuses
- Body/Insulating Material: Ceramic
- Product Weight: 1.11 kg
- Power Dissipation at Rated Current Value: 120 W
Product Code: A300633
Key Benefits
- High-speed interruption for enhanced semiconductor protection
- Rated for high system voltages (1250VAC IEC, 1300VAC UL)
- Integrated striker for remote fault indication
- Robust open slot blades ensure secure and easy mounting
- Ceramic body provides excellent insulation and durability
- Silver-plated copper terminals for optimal conductivity
Compatibility
This fuse is compatible with bolted mounting fuse holders designed for Size 73 aR fuses and is suitable for use in industrial power conversion, semiconductor protection, and high-voltage AC applications meeting IEC and UL standards.
Applications
- Protection of power semiconductors and converters
- Industrial motor drives and inverters
- High-voltage AC circuit protection
- Renewable energy systems including solar inverters
- Electrical distribution and control panels
Frequently Asked Questions
What does the 'aR' characteristic mean?
The 'aR' characteristic indicates a high-speed fuse designed specifically for semiconductor protection, capable of interrupting short-circuit currents rapidly to prevent damage.
Can this fuse be used in DC applications?
No, this fuse is rated for AC applications only, as specified in the technical specifications.
How does the striker indication system work?
The striker mechanism provides a mechanical indication of fuse operation, allowing remote monitoring of fuse status for easier maintenance.
What standards does this fuse comply with?
This fuse meets IEC and UL standards for voltage and current ratings, ensuring reliable performance in international applications.
Common Search Terms
High-speed fuse, semiconductor protection fuse, Size 73 fuse, aR fuse, 550A fuse, 1250VAC fuse, 1300VAC fuse, bolted fuse, striker fuse, open slot blade fuse, ceramic body fuse
| Manufacturer Part Number | A300633 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 3605340331332 |
| Height | 149.4mm |
| Width | 73mm |
| Depth | 78.5mm |
| HS Code | 85351000 |
| Manufacturer | Mersen |
| Alternative Product SKU | PC73UD13C550EF |
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