Mersen A050UD32TTI1800 Protistor Fuse, 1800A 500V AC, Size 32 aR, High-Speed Square Body with Striker
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The Mersen A050UD32TTI1800, item number Z300448, is a Size 32 Protistor aR semiconductor fuse rated at 1800 A and 500 VAC. This ultra-fast square-body fuse-link provides a 200 kA breaking capacity, flush-end M10 threaded mounting, and an integrated Type I mechanical striker.
| Brand | Mersen |
| Catalog Number | A050UD32TTI1800 |
| Item Number | Z300448 |
| Product Family | Protistor |
| Product Category | Square-Body Semiconductor Fuse-Link |
| Operating Class | aR Ultra-Fast Acting |
| Amperage Rating | 1800 A |
| Voltage Rating | 500 VAC IEC / 500 VAC UL |
| Breaking Capacity | 200 kA at 500 VAC |
| Pre-Arcing I²t | 1850 kA²s |
| Total Clearing I²t | 10500 kA²s at Rated Voltage |
| Power Dissipation | 245 W at Rated Current |
| Fuse Size | Size 32 |
| Mounting Configuration | TTI Flush-End M10 Metric Threads |
| Indication System | Integrated Type I Mechanical Striker |
| Housing Material | Ceramic |
| Terminal Material | Silver-Plated Copper |
| Standards and Compliance | IEC 60269-4, UL Recognized, RoHS Compliant |
Typical applications include short-circuit protection of thyristors, diodes, and other power semiconductor devices used in high-power rectifiers, DC drives, and energy-storage converters.
Apexon Supply provides B2B sourcing and replacement support for the Mersen A050UD32TTI1800. Buyers should verify the 1800 A rating, 500 VAC rating, aR class, M10 mounting interface, Size 32 configuration, and I²t values against the original equipment requirements.
Send the catalog number, item number, required quantity, and application requirements to request a B2B quote and technical alignment support.
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