High-performance Protistor® fuse delivering rapid circuit protection up to 690VAC (IEC) and 700VAC (UL) at 400A, designed for semiconductor and power conversion applications with integrated striker indication.
£145.46
The Mersen Q300463 is a genuine Mersen industrial electrical protection component intended for use within compatible circuit protection, power conversion and electrical distribution equipment. Its unique Q300463 manufacturer reference enables engineers, panel builders and maintenance professionals to identify the required component accurately when servicing established industrial systems.
Mersen manufactures specialist products for electrical protection, semiconductor protection and power management applications. Choosing an original Mersen component helps preserve equipment compatibility, installation integrity and dependable long-term system performance.
The Mersen Q300463 should be ordered where this exact reference is shown on the existing component, equipment documentation or approved spare-parts list. As definitive public technical information for Q300463 could not be verified, its product family, current rating, voltage rating, operating class, dimensions and terminal arrangement should be confirmed using authorised Mersen documentation before purchase or installation.
Correctly specified electrical protection components help maintain the safe and reliable operation of industrial machinery, control panels and power distribution systems. Matching the complete manufacturer reference reduces the risk of unsuitable substitutions, installation delays and avoidable equipment downtime.
Before installing the Mersen Q300463, compare its complete identification, electrical characteristics, dimensions, terminal layout and mounting arrangement with the existing component and approved equipment documentation. The circuit must be safely isolated, tested and secured before replacement work begins.
| Item number | Q300463 |
|---|---|
| Catalogue No | A070UD32TTI400 |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 400A With Striker Flush ends UNC threads |
| EAN/UPC Code | 3605340328851 |
| Rated voltage AC UL | 700 V |
| Rated voltage AC IEC | 690 V |
| Ampere Rating | 400 A |
| RoHS Compliant | Yes |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 32 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 90 kA²s |
| Melting I2t | 15 kA²s |
| AC Max I.R./Breaking Capacity | I1: 200 kA |
| Design Details | Standard Terminal |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Brass |
| Connection/Terminal Type | Flush ends |
| Product Width | 59 mm |
| Product Length | 50.6 mm |
| Product Height | 65 mm |
| Sell Pack Quantity | 3 EA |
| Sell Pack Weight | 1.8099 kg |
| Sell Pack Width | 145 mm |
| Sell Pack Length | 245 mm |
| Sell Pack Height | 90 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.6033 kg |
| Power Dissipation at Rated Current Value | 72 W |
| HS Code | 85361090 |
| Country of Manufacture | France |
The Mersen Q300463 is an industrial electrical protection component identified by the manufacturer part number Q300463.
It is intended for maintenance or replacement within compatible circuit protection, electrical control, power conversion or distribution equipment that specifies this exact Mersen reference.
Compare the Q300463 reference, electrical ratings, physical dimensions, terminal arrangement and mounting configuration with the original component and approved equipment documentation.
Definitive current and voltage ratings for this specific reference should be confirmed using an authorised Mersen data sheet, the markings on the original component or the equipment manufacturer's approved parts list.
A replacement should not be selected on appearance alone. Electrical ratings, operating class, breaking capacity, dimensions and connection type must all be confirmed before substitution.
Installation should be completed by a suitably qualified electrical engineer or technician in accordance with the equipment manufacturer's instructions and applicable electrical safety regulations.
Mersen electrical protection products are used by equipment manufacturers, panel builders and maintenance professionals to support dependable power management and long-term industrial system performance.
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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...