High-speed fuse with integrated striker for semiconductor protection, rated 350A, 1250VAC IEC, 1300VAC UL, with DIN 110 blade terminals.
£177.71
The Mersen R300556 is a genuine Mersen industrial electrical component identified by the manufacturer reference R300556. It is intended for professional maintenance, repair and replacement requirements where this exact catalogue number is specified in equipment documentation, electrical drawings or an approved spare-parts list.
Mersen is an established manufacturer of electrical protection, power management and industrial safety solutions. Selecting an original Mersen component with the correct manufacturer reference helps engineers, panel builders and maintenance teams maintain accurate parts identification while reducing the risk of ordering an incompatible substitute.
The precise product classification and technical specifications associated with R300556 should be confirmed against the latest Mersen documentation before purchase or installation. Electrical ratings, dimensions, connection details and mounting requirements must match the existing component and the intended equipment application.
Industrial electrical systems frequently require replacement components to match an exact manufacturer reference. Correct part-number matching helps ensure that the selected product has the appropriate electrical characteristics, physical dimensions, connection configuration and mounting arrangement for the intended equipment.
Before installing the Mersen R300556, engineers should compare the complete markings on the original component with the equipment manual, electrical schematics and current manufacturer information. Voltage, current, terminal layout, mounting method and system compatibility must all be verified before the equipment is commissioned or returned to service.
| Current | 11 A |
|---|---|
| Item number | R300556 |
| Catalogue No | PC72UD13C350D1A |
| Description | Square Body High-Speed Fuse Protistor® Size 72 aR 1250VAC IEC 1300VAC UL 350A With Striker DIN 110 Blades |
| EAN/UPC Code | 3605340330175 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 350 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 72 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 170 kA²s |
| Melting I2t | 21 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 | DIN 110 Blades |
| Product Width | 59 mm |
| Product Length | 133.4 mm |
| Product Height | 63 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 2.1099 kg |
| Sell Pack Width | 142 mm |
| Sell Pack Length | 194 mm |
| Sell Pack Height | 72 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.7033 kg |
| Power Dissipation at Rated Current Value | 77 W |
| HS Code | 85351000 |
The R300556 is a Mersen industrial electrical component identified by its manufacturer-specific reference. Its precise product type, configuration and technical ratings should be confirmed using current Mersen documentation.
Compare the complete part number and product markings with the installed component, equipment manual, electrical drawings and current Mersen technical documentation.
A component with a different reference should only be used when its electrical ratings, dimensions, terminal arrangement and manufacturer-approved compatibility have been fully verified.
Installation should be completed by a suitably qualified electrical engineer or technician following the applicable isolation, inspection and electrical safety procedures.
The R300556 may be used in industrial machinery, electrical panels, power equipment and maintenance applications where this exact Mersen reference is specified.
Mersen products are used by engineers, equipment manufacturers, panel builders and maintenance professionals to support dependable electrical protection, power management and industrial system operation.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
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...