Why Choose the Mersen BBB63A3W/6 Fuse Holder?
The Mersen BBB63A3W/6, manufacturer part number X239105, is a British Standard A3 fuse holder designed for dependable low-voltage circuit protection in industrial and commercial electrical installations. It accepts compatible A3-size BS88 fuse links, has a rated current of 63 A and supports operating voltages up to 690 V AC.
Featuring a back-to-back terminal arrangement, the BBB63A3W/6 is particularly suitable for switchboards, busbar systems and distribution assemblies where rear-facing electrical connections support an efficient panel layout. The removable white carrier provides clear visual identification within multi-circuit installations.
Mersen BS fuse holders comply with BS88-1 and BS88-6. The design helps prevent direct contact with live components during insertion and removal, while the cable terminals inside the fuse base remain fully shrouded when the carrier is removed. This provides IP2X-classified contact protection for safer inspection and maintenance.
The /6 suffix denotes a standard package containing six fuse holders, making this product suitable for panel builders, OEMs and electrical contractors completing multi-circuit installations.
Key Advantages
- Reliable 63 A British Standard fuse holder.
- Designed for compatible A3-size BS88 fuse links.
- Back-to-back terminals support efficient rear-access wiring.
- Rated for electrical systems operating at up to 690 V AC.
- IP2X-classified construction reduces the risk of accidental contact.
- White fuse carrier supports circuit or phase identification.
- Supplied as a convenient pack of six.
Key Features
- Mersen BS Fuse-holder series.
- Manufacturer part number: X239105.
- Catalogue reference: BBB63A3W.
- Pack reference: BBB63A3W/6.
- 63 A rated current.
- 690 V AC rated voltage.
- Compatible with A3 BS88 fuse links.
- Single-pole construction.
- Back-to-back terminal configuration.
- White insulated fuse carrier.
- Fully shrouded cable terminals.
- IP2X-classified contact protection.
Dependable Back-to-Back BS88 Fuse Protection
A fuse holder creates a secure mechanical and electrical interface between a replaceable fuse link and the protected circuit. During an overload or short-circuit condition, the installed fuse link interrupts excessive current to help protect cables, equipment and downstream electrical components.
The back-to-back connection format positions the terminals for rear access, making the Mersen BBB63A3W/6 well suited to organised switchboard and busbar layouts. This configuration can help panel builders maintain clear wiring routes while maximising available enclosure space.
Once the supply has been safely isolated, the removable carrier allows the installed fuse link to be inspected or replaced. The shrouded base terminals and IP2X-classified design help support safer professional maintenance procedures.
Typical Applications
- Industrial switchboards.
- Low-voltage distribution panels.
- Busbar power distribution systems.
- Motor control centres.
- OEM machinery and equipment.
- Commercial electrical installations.
- Industrial control cabinets.
