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MERSEN FUSE 12,5 URD 73 TT F 0550 12,5URD73TTF0550
MPN: P300508
Alt. SKU: PC73UD13C550TF
Special Price
£134.48
£112.07
Regular Price
£244.52
Why Choose the Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 550A With Striker Flush Ends Metric Threads (PC73UD13C550TF)?
Engineered for demanding industrial power applications, this high-speed fuse delivers rapid circuit protection at up to 1250VAC (IEC) and 1300VAC (UL), supporting currents up to 550A. The Square Body design with flush striker and metric thread terminals ensures secure installation and reliable visual indication of fuse operation.
Certified to both IEC and UL standards, the Protistor® aR fuse offers high breaking capacity and exceptional thermal and electrical characteristics, reducing downtime and enhancing equipment safety in critical environments.
Technical Specifications
- Item number: P300508
- Catalogue No: PC73UD13C550TF
- Description: Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 550A With Striker Flush ends metric threads
- EAN/UPC Code: 3605340329520
- 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 Brass
- Connection/Terminal Type: Flush ends
- Product Width: 73 mm
- Product Length: 74 mm
- Product Height: 78.5 mm
- Sell Pack Quantity: 1 EA
- Sell Pack Weight: 1.22 kg
- Sell Pack Width: 110 mm
- Sell Pack Length: 125 mm
- Sell Pack Height: 75 mm
- Product group: Semiconductor Protection Fuses
- Body/Insulating Material: Ceramic
- Product Weight: 1.22 kg
- Power Dissipation at Rated Current Value: 116 W
Product Code: P300508
Key Benefits
- High-speed protection minimises damage to sensitive semiconductor components.
- Certified to IEC and UL standards ensuring reliable and safe operation.
- Flush striker indication system provides clear visual status of fuse operation.
- Robust ceramic body offers excellent thermal and mechanical stability.
- Silver-plated brass terminals with metric threads ensure secure and corrosion-resistant connections.
- High breaking capacity of 126 kA supports demanding industrial applications.
Compatibility
This fuse is compatible with fuse holders and switchgear designed for Size 73 aR fuses with bolted mounting and metric thread terminals. It is suitable for integration in industrial power distribution systems requiring high-speed semiconductor protection at voltages up to 1300VAC.
Applications
- Protection of power semiconductors such as thyristors and diodes in industrial drives.
- High-speed circuit protection in motor control centres and power converters.
- Use in renewable energy systems including solar inverters and wind turbine controls.
- Industrial automation and robotics requiring fast and reliable fuse operation.
- General industrial power distribution where high breaking capacity and fast response are critical.
Frequently Asked Questions
What does the 'aR' characteristic mean for this fuse?
The 'aR' characteristic indicates a high-speed semiconductor fuse designed to protect power semiconductors by interrupting fault currents rapidly, preventing damage to sensitive components.
Can this fuse be used in DC applications?
No, this fuse is specified for AC applications only, as indicated in the technical specifications.
How does the striker indication system work?
The striker indication system provides a mechanical visual signal by releasing a striker when the fuse operates, allowing quick identification of a blown fuse without disassembly.
Is this fuse suitable for use in outdoor environments?
While the fuse has a robust ceramic body, suitability for outdoor use depends on the enclosure and environmental protection of the installation. Consult the system design specifications for outdoor applications.
Common Search Terms
high-speed fuse, semiconductor protection fuse, Size 73 fuse, aR fuse, 550A fuse, 1250VAC fuse, 1300VAC fuse, Protistor fuse, industrial fuse, flush ends fuse, metric thread fuse, bolted fuse, striker indication fuse
| Manufacturer Part Number | P300508 |
|---|---|
| Packed Quantity | 1 |
| Barcode | 3605340329520 |
| Height | 74mm |
| Width | 73mm |
| Depth | 78.5mm |
| HS Code | 85351000 |
| Manufacturer | Mersen |
| Alternative Product SKU | PC73UD13C550TF |
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