Why Choose the Mersen BB21PPMS NH Fuse Base?
The Mersen BB21PPMS is a robust single-pole NH Size 2 plastic fuse base designed to provide secure mounting and reliable electrical connection for NH fuse links in industrial low-voltage power distribution systems. Also identified by Mersen article number D217215, this fuse base incorporates a microswitch for remote fuse-status indication.
Designed for use with NH fuse links equipped with a striker, the integrated microswitch can signal when the fuse has operated or when no fuse link is installed. This indication capability makes the BB21PPMS particularly suitable for monitored switchboards, automated installations and critical power distribution equipment where rapid fault identification is important.
With a rated current of 400 A, an AC voltage rating of 1250 V and a DC voltage rating of 1000 V, the BB21PPMS provides dependable performance across a wide range of industrial applications. Its flexible construction supports either screw mounting or DIN rail installation, while screw connections ensure secure termination of power conductors.
Key Advantages
- Designed for NH Size 2 fuse links.
- Integrated microswitch for remote fuse-status indication.
- Rated current of 400 A for industrial distribution circuits.
- Suitable for systems up to 1250 V AC and 1000 V DC.
- Flexible screw or DIN rail mounting options.
- Silver-plated electrolytic copper contacts provide dependable conductivity.
Key Features
- Mersen NH Plastic Bases series.
- Manufacturer article number: D217215.
- NH fuse size: NH2.
- Single-pole configuration.
- Microswitch-operated remote indication system.
- Designed for NH fuse links with a striker.
- Screw terminal electrical connection.
- Screw mounting or DIN rail installation.
Reliable Fuse Monitoring for Industrial Distribution Systems
NH fuse bases provide the mechanical support and electrical contacts required to install NH fuse links safely within switchboards and power distribution equipment. Stable contact pressure and low electrical resistance are important for minimising heat generation and maintaining dependable circuit protection under demanding operating conditions.
The integrated microswitch distinguishes the BB21PPMS from a standard NH fuse base. When used with a compatible striker-operated fuse link, it can provide a remote status signal following fuse operation. This helps maintenance personnel identify failed circuits quickly and supports integration with alarms, PLC inputs and supervisory control systems.
Typical Applications
- Industrial switchboards and distribution panels.
- Motor control centres.
- Monitored fuse protection systems.
- PLC-controlled machinery and production equipment.
- Power conversion and renewable energy installations.
- Utility, infrastructure and process-control systems.
