High-speed fuse with 450A rating, certified to IEC and UL standards, featuring a striker indication system and plain blade terminals for semiconductor protection.
£189.12
The Mersen W302975 is a genuine Mersen industrial electrical component identified by the manufacturer part number W302975. It is intended for maintenance, repair and replacement requirements within compatible electrical equipment, machinery and power management assemblies.
Selecting an industrial component by its exact manufacturer reference helps engineers, maintenance professionals and purchasing teams reduce identification errors. The W302975 part number provides a clear reference for comparing the required product with an existing component, technical drawing, equipment manual or approved bill of materials.
Detailed public specifications for the Mersen W302975 could not be reliably verified. Before ordering or installation, the product type, electrical ratings, protection characteristics, terminal configuration and physical dimensions should be confirmed from the component label, authorised Mersen documentation or the original equipment manufacturer.
Industrial electrical systems depend on correctly specified components to maintain safe and dependable operation. Products that appear physically similar can have different current ratings, voltage ratings, connection arrangements or operating characteristics, making exact manufacturer part-number identification essential.
The Mersen W302975 reference enables maintenance professionals to compare the required component with service records, equipment documentation and the original installation. Before replacement work begins, the equipment should be safely isolated and every relevant specification should be checked in accordance with the manufacturer’s instructions, site procedures and applicable electrical regulations.
| Item number | W302975 |
|---|---|
| Catalogue No | PC71UD13C450PA |
| Description | Square Body High-Speed Fuse Protistor® Size 71 aR 1250VAC IEC 1300VAC UL 450A With Striker Plain Blades |
| EAN/UPC Code | 3605340379853 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 450 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 71 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 378 kA²s |
| Melting I2t | 47 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 | Plain Blades |
| Product Width | 51 mm |
| Product Length | 149.4 mm |
| Product Height | 56.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.68 kg |
| Sell Pack Width | 140 mm |
| Sell Pack Length | 170 mm |
| Sell Pack Height | 70 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.56 kg |
| Power Dissipation at Rated Current Value | 95 W |
| HS Code | 85351000 |
The Mersen W302975 is an industrial electrical component intended for use within compatible equipment or assemblies. Its precise function should be confirmed from the original component or authorised equipment documentation.
Compare the W302975 part number with the existing component, equipment manual, technical drawing or approved bill of materials before ordering.
The rated current, voltage and operating characteristics should be verified using the product label, authorised Mersen documentation or information supplied by the equipment manufacturer.
An alternative should only be installed when its electrical, mechanical and safety characteristics have been confirmed as fully compatible by a qualified engineer or the equipment manufacturer.
The component should be installed by a suitably qualified electrical professional following the equipment instructions, site isolation procedures and applicable safety regulations.
Mersen products support industrial electrical applications where accurate component identification, dependable equipment maintenance and responsible replacement-part selection 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...