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High-speed aR-class fuse designed for semiconductor protection with integrated striker indication and silver-plated copper slotted blade terminals, rated at 400A and up to 700VAC.
£87.28
The Mersen J300204 is a professional industrial circuit protection component intended for use in compatible electrical power distribution, control and equipment protection assemblies. Manufactured by Mersen, it is suitable for maintenance, replacement and OEM applications where accurate part identification and dependable electrical performance are essential.
Mersen specialises in fuses, fuse holders and associated protection products for industrial machinery, switchgear, power electronics and energy infrastructure. The unique J300204 manufacturer part number helps engineers, panel builders and procurement professionals identify the required component when servicing compatible Mersen electrical equipment.
Detailed public technical specifications for the J300204 are limited. Its precise product type, rated current, rated voltage, protection characteristic, breaking capacity, dimensions and terminal arrangement should therefore be verified against the original component, equipment documentation or official Mersen technical data before purchase or installation.
Correctly specified circuit protection components help maintain the safety, availability and reliability of industrial electrical equipment. They form part of a coordinated protection system designed to isolate faults, limit fault energy and reduce the risk of damage to connected machinery and power infrastructure.
The Mersen J300204 should only be installed where its electrical characteristics, operating performance, physical format and connection arrangement match the original equipment specification. Selection should be based on verified technical information rather than visual similarity or part-number sequence alone.
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | J300204 | |
| Catalogue No | A070UD32LI400 | |
| Description | Square Body High-Speed Fuse Protistor® Size 32 aR 690VAC IEC 700VAC UL 400A With Striker Slotted Blades long | |
| EAN/UPC Code | 3605340324860 | |
| 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 | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Copper | |
| Connection/Terminal Type | Slotted Blades | |
| Product Width | 59 mm | |
| Product Length | 153 mm | |
| Product Height | 65 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 1.7199 kg | |
| Sell Pack Width | 160 mm | |
| Sell Pack Length | 195 mm | |
| Sell Pack Height | 72 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.5733 kg | |
| Power Dissipation at Rated Current Value | 75 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
The Mersen J300204 is an industrial electrical circuit protection component intended for use in compatible power distribution, control or equipment protection assemblies.
It should only replace a component with matching manufacturer identification, electrical ratings, operating characteristics, dimensions and terminal requirements. Compatibility must be verified before installation.
Confirm the precise product type, rated current, rated voltage, protection characteristic, breaking capacity, dimensions, mounting arrangement and equipment compatibility.
Detailed public specifications are limited. The original component label, equipment documentation or official Mersen technical data should be checked before ordering.
Installation or replacement should be completed by a qualified electrical professional following the equipment manufacturer's instructions and applicable electrical safety procedures.
Mersen electrical protection products are selected by engineers, panel builders and maintenance professionals to support safe and dependable operation across demanding industrial electrical applications.
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