High-performance Protistor® fuse with fast-acting aR characteristic, rated 50A at 690VAC IEC and 700VAC UL, featuring striker indication and open slot blades for secure mounting.
£88.93
The Mersen R300372 is a genuine Mersen industrial electrical component intended for professional maintenance, repair and replacement applications. Its unique manufacturer reference enables engineers, purchasing teams and maintenance professionals to identify the correct component when part number R300372 is specified by existing equipment, technical drawings or an approved parts list.
Mersen is a recognised manufacturer of electrical protection, power management and industrial safety solutions. Selecting an original Mersen component with the correct reference helps support dependable equipment operation, simplify spare-parts procurement and reduce the risk of installing an incompatible substitute.
Before ordering or installing the R300372, its electrical ratings, dimensions, connection arrangement and mounting requirements should be checked against current Mersen technical documentation. The complete markings on the existing component should also be compared to confirm suitability for the intended industrial 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, terminal layout and mounting arrangement for the intended equipment.
Before installing the Mersen R300372, engineers should compare the complete markings on the original component with the equipment manual, electrical schematics and current manufacturer information. Voltage, current, connection method, installation format and system compatibility must all be verified before the equipment is returned to service.
| Item number | R300372 |
|---|---|
| Catalogue No | PC30UD69V50EF |
| Description | Square Body High-Speed Fuse Protistor® Size 30 aR 690VAC IEC 700VAC UL 50A With Striker Open Slot Blades |
| EAN/UPC Code | 3605340327472 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 50 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 30 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 0.68 kA²s |
| Melting I2t | 0.116 kA²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Copper |
| Connection/Terminal Type | Open Slot Blades |
| Product Width | 40 mm |
| Product Length | 100 mm |
| Product Height | 48 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 0.7959 kg |
| Sell Pack Width | 140 mm |
| Sell Pack Length | 143 mm |
| Sell Pack Height | 65 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.2653 kg |
| Power Dissipation at Rated Current Value | 9 W |
| HS Code | 85361050 |
| Country of Manufacture | France |
The R300372 is a Mersen industrial electrical component identified by its manufacturer-specific reference. Its exact product type 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 information.
A component with a different reference should only be used when its electrical ratings, physical dimensions, terminals 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 R300372 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...