Why Choose the Mersen M1055734 BSL NH Vertical Fuse Rail?
The Mersen M1055734 is a heavy-duty BSL NH vertical fuse rail designed for dependable circuit protection and power distribution in industrial low-voltage switchboards. Also identified by the catalogue reference BL2V403K400, this three-pole fuse rail is rated at 400 A and accommodates standard NH size 2 fuse-links.
Designed for direct installation onto standard 185 mm busbar systems, the M1055734 provides a compact and efficient alternative to separately mounted fuse bases. Its vertical arrangement reduces wiring requirements, saves valuable switchboard space and supports fast assembly in commercial and industrial distribution systems.
The fuse rail incorporates V-terminal cable connections for secure conductor termination and features an IP20 touch-protected design. It is suitable for electrical systems operating at up to 690 V AC, making it an effective solution for feeder protection, machinery distribution and high-current switchboard applications.
Key Advantages
- 400 A rated current for demanding industrial distribution circuits.
- Accepts standard NH size 2 fuse-links.
- Designed for direct mounting onto 185 mm busbar systems.
- Three-pole configuration supports three-phase installations.
- Integrated IP20 touch protection improves operator safety.
- V-terminal connections provide secure cable termination.
- Vertical construction helps reduce switchboard space requirements.
- Modular BSL design supports straightforward installation and maintenance.
Key Features
- Mersen BSL NH vertical fuse rail.
- NH size 2 fuse-link compatibility.
- 400 A rated operational current.
- Suitable for voltages up to 690 V AC.
- Three-pole arrangement.
- Compatible with 185 mm busbar centres.
- V-terminal cable connection system.
- Touch-protected to IP20.
- Designed for fuse-links complying with IEC/EN 60269-2.
- Suitable for industrial and commercial low-voltage distribution assemblies.
Efficient Protection for High-Current Distribution
The Mersen M1055734 combines fuse mounting, conductor termination and busbar connection within one compact assembly. This integrated construction can reduce the number of separate components required inside a switchboard while helping simplify installation and future maintenance.
When fitted with an appropriately rated NH size 2 fuse-link, the fuse rail protects cables and downstream equipment against overload and short-circuit conditions. Its three-pole layout makes it particularly suitable for three-phase feeders supplying machinery, distribution panels and other high-current electrical loads.
Typical Applications
- Industrial low-voltage switchboards.
- Three-phase feeder protection.
- Commercial power-distribution panels.
- Motor control centres.
- Machinery and production equipment.
- Electrical distribution cabinets.
- OEM switchboard manufacturing.
- Infrastructure and utility distribution systems.
