Protistor® high-speed fuse with 450A rating, 690VAC IEC / 700VAC UL voltage capability, built-in striker for remote fuse status indication, and DIN 80 blade terminals. Suitable for semiconductor protection in industrial environments.
£155.29
The reference Mersen F300178 could not be matched confidently to a current Mersen product page, authoritative manufacturer datasheet or dependable distributor catalogue record. The supplied code may refer to a discontinued component, a regional catalogue item, a legacy Ferraz Shawmut reference or part of a longer manufacturer catalogue number.
Mersen manufactures an extensive range of high-speed semiconductor fuses, industrial low-voltage fuses, fuse holders, disconnect switches and power distribution components. Products within these ranges may use similar reference formats while having substantially different current ratings, voltage ratings, operating classes and terminal configurations.
The complete product reference should therefore be confirmed from the component body, original packaging, equipment documentation or purchasing records before the F300178 is specified or replaced. Useful identification details include the rated current, rated voltage, fuse class, body size, terminal arrangement and any additional catalogue code printed alongside F300178.
Industrial fuses and semiconductor protection devices must be selected using verified manufacturer specifications. A component with an incorrect current rating, voltage rating, operating class or breaking capacity may fail to provide the intended protection during an overload or short-circuit condition.
Confirming the full Mersen catalogue number allows the correct technical documentation to be located and reviewed. The official datasheet should be used to verify time-current performance, energy limitation, interrupting capacity, installation requirements and compatibility with the protected equipment.
| Current | 08 A |
|---|---|
| Item number | F300178 |
| Catalogue No | PC32UD69V450A |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 450A With Striker DIN 80 Blades |
| EAN/UPC Code | 3605340324341 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 450 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 32 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 130 kA²s |
| Melting I2t | 22 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 | DIN 80 Blades |
| Product Width | 59 mm |
| Product Length | 110 mm |
| Product Height | 65 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.5879 kg |
| Sell Pack Width | 140 mm |
| Sell Pack Length | 195 mm |
| Sell Pack Height | 75 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.5293 kg |
| Power Dissipation at Rated Current Value | 80 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The supplied reference could not be matched confidently to a verified Mersen catalogue product or authoritative manufacturer datasheet.
It may be a complete legacy reference, a regional product code or part of a longer catalogue number. Check the component and packaging for additional markings.
The full catalogue number, rated current, rated voltage, product series, fuse class, body dimensions and terminal configuration are recommended.
The electrical ratings have been omitted because they could not be confirmed through an authoritative Mersen product page or manufacturer datasheet.
No. A replacement should only be selected after verifying its electrical ratings, operating characteristics, breaking capacity, dimensions and mounting arrangement.
Accurate component identification helps ensure that industrial electrical systems receive the correct overload and short-circuit protection while maintaining equipment reliability and operational safety.
● Service Agreements
Credit Accounts
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
● frequently asked questions
At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
Your content goes here. Edit or remove this text inline or in the module Content settings. You can also style every aspect of this content in the module Design settings and even apply custom CSS to this text in the module Advanced settings.
● latest blog
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...