High-speed aR fuse designed for semiconductor protection with 400A rating, 1250VAC IEC and 1300VAC UL approvals, featuring striker flush ends and metric threads for easy installation.
£172.21
The Mersen B300496 is an industrial electrical replacement component identified by its manufacturer reference for use with compatible protection, control and power distribution equipment. It is suitable for maintenance, repair and replacement projects where precise component identification is essential for preserving the original equipment configuration.
Selecting the correct Mersen manufacturer reference helps engineers, panel builders and maintenance professionals maintain electrical and mechanical compatibility with existing equipment. Accurate part selection can reduce the risk of unsuitable substitutions, installation difficulties, unreliable operation and avoidable machinery downtime.
Before ordering or installing the Mersen B300496, compare all markings on the original component with the relevant equipment documentation. The electrical ratings, operating characteristics, physical dimensions, terminal arrangement and mounting configuration must be confirmed for the intended application.
Industrial electrical systems depend on correctly specified components to maintain dependable operation. Matching the Mersen B300496 reference to the original product helps reduce the likelihood of installation errors, unsuitable substitutions and unreliable equipment performance.
Always inspect the complete product markings before installation. In addition to the B300496 reference, engineers should verify the component’s current and voltage ratings, operating class, physical dimensions, terminal configuration and mounting arrangement.
| Item number | B300496 |
|---|---|
| Catalogue No | PC72UD13C400TF |
| Description | Square Body High-Speed Fuse Protistor® Size 72 aR 1250VAC IEC 1300VAC UL 400A With Striker Flush ends metric threads |
| EAN/UPC Code | 3605340329292 |
| Rated voltage AC UL | 1300 V |
| Rated voltage AC IEC | 1250 V |
| Ampere Rating | 400 A |
| AC or DC | AC |
| Speed/Characteristic | aR |
| Fuse Size | 72 |
| Mounting | Bolted |
| Clearing I2t At Rated Voltage | 270 kA²s |
| Melting I2t | 32.8 kA²s |
| AC Max I.R./Breaking Capacity | I1: 126 kA |
| Indication System | Yes |
| Indication System Type | Striker |
| Connection/Terminal Material | Silver-Plated Brass |
| Connection/Terminal Type | Flush ends |
| Product Width | 59 mm |
| Product Length | 74 mm |
| Product Height | 63 mm |
| Sell Pack Quantity | 1 EA |
| Sell Pack Weight | 0.8 kg |
| Sell Pack Width | 110 mm |
| Sell Pack Length | 130 mm |
| Sell Pack Height | 80 mm |
| Product group | Semiconductor Protection Fuses |
| Body/Insulating Material | Ceramic |
| Product Weight | 0.8 kg |
| Power Dissipation at Rated Current Value | 80 W |
| HS Code | 85351000 |
The Mersen B300496 is an industrial electrical component identified by its manufacturer reference for use in compatible maintenance, repair and replacement applications.
It may be suitable as a replacement when its complete reference, electrical ratings, dimensions, terminals and mounting arrangement match the original component.
The rated current, rated voltage, operating characteristic, physical 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 B300496 reference and all other markings on the original component against the equipment manual or official Mersen documentation.
Mersen components are selected by engineers, panel builders and maintenance professionals for use across industrial electrical and power management systems.
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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...