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High-speed gR-class DC fuse for semiconductor protection rated at 750 V and 400 A with integrated striker indication and bolted mounting.
£407.90
The Mersen C090438 is a dependable industrial fuse designed to provide reliable overcurrent and short-circuit protection for electrical equipment, power distribution systems and industrial machinery. Manufactured by Mersen, a recognised specialist in electrical protection, this fuse is intended for applications where consistent fault interruption and dependable circuit protection are essential.
The C090438 helps protect cables, conductors and connected equipment by interrupting the electrical circuit when excessive current occurs. Its industrial-grade construction supports reliable operation in demanding electrical environments, helping reduce the risk of equipment damage, unplanned downtime and costly maintenance.
Suitable for use within correctly rated fuse holders and electrical assemblies, the Mersen C090438 fuse can be incorporated into control panels, distribution equipment, machinery and power conversion systems. The precise electrical rating and installation requirements should always be confirmed against the equipment specification and official Mersen technical documentation before installation.
Industrial fuses protect electrical circuits by melting a calibrated fuse element when current exceeds the fuse's permitted operating level. This safely interrupts the circuit and helps prevent excessive heat, conductor damage and failure of connected equipment.
Selecting the correct fuse requires consideration of rated current, system voltage, breaking capacity, operating class, physical dimensions and equipment requirements. A replacement fuse should match the required electrical and mechanical characteristics specified by the equipment manufacturer.
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | gR | |
| Voltage | 750 V | |
| Item number | C090438 | |
| Catalogue No | D122GC75V400TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 122 gR 750VDC IEC 400A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340090017 | |
| Rated voltage DC IEC | 750 V | |
| Ampere Rating | 400 A | |
| RoHS Compliant | Yes | |
| AC or DC | DC | |
| Speed/Characteristic | gR | |
| Fuse Size | 122 | |
| Mounting | Bolted | |
| Melting I2t | 50.94 kA²s | |
| Max. Rated Breaking Capacity DC | 100 kA | |
| Design Details | gRC | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 59 mm | |
| Product Length | 131 mm | |
| Product Height | 63 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 1.43 kg | |
| Sell Pack Width | 130 mm | |
| Sell Pack Length | 200 mm | |
| Sell Pack Height | 90 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 1.43 kg | |
| Power Dissipation at Rated Current Value | 74.5 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
The Mersen C090438 is used to provide overcurrent and short-circuit protection within compatible industrial electrical equipment and power systems.
No. A fuse is a single-use protective device and must be replaced after its fuse element has operated.
Check the required current rating, voltage rating, operating class, breaking capacity, dimensions and connection format against the equipment specification and official Mersen technical documentation.
A fuse with a different electrical rating should not be installed unless the replacement has been approved by the equipment manufacturer or a suitably qualified electrical engineer.
The fuse should be installed by suitably qualified personnel with the electrical supply isolated and all applicable safety procedures followed.
Mersen electrical protection products are used across industrial power, automation and electrical distribution applications to help protect critical equipment and maintain reliable system operation.
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