Protistor® high-speed fuse with 800A rating, 1250VAC IEC and 1300VAC UL rated voltage, featuring striker indication and flush end silver-plated brass terminals for industrial semiconductor protection.
£293.24
The Mersen S300511 is a manufacturer-specific industrial electrical replacement component intended for professional maintenance, repair and equipment-support applications. Identified by the exact Mersen reference S300511, it enables engineers, maintenance teams and purchasing departments to source the corresponding component for compatible electrical equipment.
Accurate part-number matching is essential when replacing components within industrial machinery, electrical control panels and power distribution systems. Selecting the specified Mersen product helps reduce the risk of compatibility problems while supporting the continued reliability and integrity of the original installation.
The Mersen S300511 should be selected by comparing its manufacturer reference, physical configuration and electrical characteristics with the original component or associated equipment documentation. Detailed product ratings were not available from a verifiable public manufacturer listing, so all specifications and installation requirements should be confirmed using the product label or current Mersen technical documentation.
Industrial electrical systems depend on correctly identified replacement components to maintain safe and dependable operation. Using the precise manufacturer reference helps maintenance personnel avoid unsuitable substitutions that could affect equipment fit, electrical compatibility or system performance.
The Mersen S300511 provides a distinct reference for product identification during procurement, servicing and planned maintenance. Before installation, engineers should verify the complete specification against the original part, associated electrical drawings and the latest technical information supplied by Mersen.
| Item number | S300511 |
|---|---|
| Catalogue No | PC73UD13C800TF |
| Description | Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 800A With Striker Flush ends metric threads |
| EAN/UPC Code | 3605340329582 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 800 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 73 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 1530 kA²s |
| Melting I2t | 189 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 | 136 W |
| HS Code | 85351000 |
The Mersen S300511 is a manufacturer-specific industrial electrical component identified by the Mersen part reference S300511.
Yes. S300511 is the reference used to identify this Mersen component for purchasing, maintenance and replacement purposes.
Compare the S300511 reference, physical format and electrical markings with the original component, equipment drawings and current Mersen technical documentation.
Detailed ratings should be taken directly from the product marking or verified using official Mersen documentation before the component is selected or installed.
Installation should be completed by a suitably qualified electrical professional in accordance with the equipment instructions and applicable electrical regulations.
Mersen components support professional electrical maintenance applications where accurate product identification, dependable component selection and equipment reliability are essential.
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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...