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High-speed Protistor® fuse delivering rapid circuit interruption at 400A with robust performance across 690VAC (IEC) and 700VAC (UL) systems. Features aR characteristic, striker indication system, flush ends, and metric threads for reliable industrial power protection.
£76.14
The Mersen B300059 is an industrial electrical replacement component intended for use in compatible power distribution, control and automation equipment. Identified by the manufacturer reference B300059, it allows engineers, panel builders and maintenance teams to source a matching component for existing Mersen-equipped systems.
Selecting a component with the correct manufacturer reference helps maintain the electrical and mechanical compatibility of the original installation. This is particularly important in industrial environments, where an unsuitable replacement can cause installation problems, unreliable operation or unnecessary equipment downtime.
Before ordering or installing the Mersen B300059, its current and voltage ratings, operating characteristics, physical dimensions, terminal arrangement and mounting configuration should be checked against the original product label and the equipment documentation.
Industrial electrical systems depend on correctly specified components to maintain safe, dependable operation. Matching the Mersen B300059 reference to the original part helps reduce the risk of unsuitable substitutions and supports a more efficient maintenance process.
The complete product markings should always be checked before installation. In addition to the B300059 reference, users should verify the electrical ratings, dimensions, terminals and mounting arrangement to ensure that the component is suitable for the intended equipment.
Tick the specs you need, then view products that match.
| Fuse Indication | Striker | |
|---|---|---|
| Fuse Type | Semiconductor | |
| Fuse Class | aR | |
| Voltage | 690 V | |
| Item number | B300059 | |
| Catalogue No | PC30UD69V400TF | |
| Description | Square Body High-Speed Fuse Protistor® Size 30 aR 690VAC IEC 700VAC UL 400A With Striker Flush ends metric threads | |
| EAN/UPC Code | 3605340322835 | |
| 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 | 30 | |
| Mounting | Bolted | |
| Clearing I2t At Rated Voltage | 130 kA²s | |
| Melting I2t | 23 kA²s | |
| AC Max I.R./Breaking Capacity | I1: 200 kA | |
| Indication System | Yes | |
| Indication System Type | Striker | |
| Connection/Terminal Material | Silver-Plated Brass | |
| Connection/Terminal Type | Flush ends | |
| Product Width | 40 mm | |
| Product Length | 50.6 mm | |
| Product Height | 48 mm | |
| Sell Pack Quantity | 3 EA | |
| Sell Pack Weight | 0.7389 kg | |
| Sell Pack Width | 85 mm | |
| Sell Pack Length | 135 mm | |
| Sell Pack Height | 55 mm | |
| Product group | Semiconductor Protection Fuses | |
| Body/Insulating Material | Ceramic | |
| Product Weight | 0.2463 kg | |
| Power Dissipation at Rated Current Value | 60 W | |
| HS Code | 85361090 | |
| Country of Manufacture | France |
The Mersen B300059 is an industrial electrical component identified by its manufacturer part number for use in compatible maintenance, repair and replacement applications.
It may be used as a replacement when its complete part number, electrical ratings, dimensions, terminals and mounting arrangement match the original component.
The rated current, rated voltage, operating characteristic, dimensions, terminal arrangement and mounting configuration should all be verified before installation.
It may be installed in compatible industrial machinery, control panels, automation equipment and power systems, subject to the original equipment specification.
Check the complete B300059 reference and all other markings on the original component against the equipment manual or official manufacturer documentation.
Mersen components are used by engineers, panel builders and maintenance professionals to support dependable operation across industrial electrical and power management systems.
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