High-speed fuse with 500A rating, aR characteristic, ceramic body, striker indication, and plain blade terminals for reliable semiconductor protection.
£254.83
The Mersen S302719 is an industrial electrical protection component manufactured for use in professional power distribution, control and automation equipment. Designed to support dependable circuit protection, this Mersen fuse helps isolate electrical faults and reduce the risk of damage to connected equipment.
Mersen is a globally recognised manufacturer of electrical protection products for industrial installations, machinery and power electronic systems. The S302719 is identified by its dedicated manufacturer reference, helping maintenance engineers, panel builders and purchasing teams select the correct replacement component for compatible equipment.
The S302719 manufacturer part number should be checked against the original fuse, equipment documentation or approved bill of materials before installation. Electrical ratings, operating class and physical dimensions must match the requirements of the circuit in which the fuse will be used.
Industrial fuses provide essential protection by interrupting excessive current before it causes serious damage to cables, semiconductor devices, control equipment or other connected components. Correct fuse selection is important because the current rating, voltage rating, operating characteristic and breaking capacity must suit the protected circuit.
When replacing an existing component with the Mersen S302719, installers should verify the complete reference and all marked electrical specifications. Using an incorrectly rated fuse may reduce protection, cause unwanted operation or create a safety risk.
| Item number | S302719 |
|---|---|
| Catalogue No | PC73UD13C500PA |
| Description | Square Body High-Speed Fuse Protistor® Size 73 aR 1250VAC IEC 1300VAC UL 500A With Striker Plain Blades |
| EAN/UPC Code | 3605340355574 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 500 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 73 |
| Mounting | Clip |
| Clearing I2t At Rated Voltage | 360 kA²s |
| Melting I2t | 44 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 | 73 mm |
| Product Length | 149.4 mm |
| Product Height | 78.5 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 3.48 kg |
| Sell Pack Width | 160 mm |
| Sell Pack Length | 245 mm |
| Sell Pack Height | 100 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 1.16 kg |
| Power Dissipation at Rated Current Value | 112 W |
| HS Code | 85351000 |
The Mersen S302719 is an industrial electrical protection component intended for use in compatible power distribution, machinery or control equipment.
Yes. S302719 is the reference used to identify this Mersen product and should be matched with the number shown on the original component or equipment documentation.
Check the complete part number, voltage rating, current rating, fuse class, terminal configuration and dimensions against the original fuse or the equipment manufacturer's documentation.
A fuse with a different electrical rating or operating characteristic should not be substituted unless the change has been approved by the equipment manufacturer or a qualified electrical engineer.
The component should be selected and installed by suitably qualified electrical personnel in accordance with applicable regulations and equipment instructions.
Mersen electrical protection products are used by engineers, panel builders, machine manufacturers and maintenance professionals in industrial power and automation systems worldwide.
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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...