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MERSEN FUSE BSL NH1250A 185mm BL1B403K000 BL1B403K000
Engineered for demanding industrial applications, the NH-vertical fuse rail offers reliable 3-pole protection for systems up to 690 VAC and 250A. Designed for seamless integration with a 185 mm bus bar system, featuring secure cable connections via M12 bolts.
£142.21
Why Choose the Mersen X1002291 BSL NH Fuse Rail?
The Mersen X1002291 is a heavy-duty BSL NH vertical fuse rail designed to provide dependable circuit protection and efficient power distribution in low voltage electrical installations. Part of the proven Mersen BSL fuse rail series, it is engineered for direct installation onto 185 mm busbar systems, making it ideal for industrial switchboards, distribution panels and OEM electrical equipment.
Designed for demanding industrial environments, the X1002291 combines robust mechanical construction with a modular design that enables fast installation and straightforward maintenance. Its touch-protected IP20 construction enhances operator safety while providing reliable performance in commercial and industrial power distribution systems.
Rated at 250 A with a 690 V AC IEC operating voltage, the X1002291 is designed for NH Size 1 fuse-links. It features a 3-pole configuration with M12 bolt cable connections, making it suitable for protecting high-current circuits within modern electrical distribution assemblies.
Key Advantages
- Heavy-duty NH vertical fuse rail for industrial power distribution.
- 250 A rated current for demanding electrical applications.
- 690 V AC IEC rated voltage.
- Designed for NH Size 1 fuse-links.
- Direct installation onto 185 mm busbar systems.
- Touch-protected IP20 construction improves installation safety.
- Modular design simplifies panel assembly and maintenance.
Key Features
- Mersen BSL NH Fuse Rail series.
- 250 A conventional thermal current.
- 690 V AC IEC rated voltage.
- NH Size 1 fuse compatibility.
- Three-pole construction.
- M12 bolt cable terminations.
- Designed for 185 mm busbar systems.
- Suitable for 50 / 60 Hz operation.
- RoHS compliant.
Reliable Protection for Industrial Power Distribution
NH fuse rails provide a safe and efficient method of mounting NH fuse-links within low voltage electrical distribution systems. The Mersen X1002291 is designed to deliver reliable overcurrent protection while simplifying installation and maintenance for panel builders and electrical engineers.
Its modular BSL construction enables flexible switchboard layouts while maintaining dependable electrical performance and high levels of operator safety in industrial power distribution applications.
Typical Applications
- Industrial switchboards.
- Low voltage power distribution panels.
- Cable distribution cabinets.
- Motor control centres.
- OEM machinery and automation systems.
- Commercial and industrial electrical infrastructure.
Technical Specifications
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| Phase | Three Phase | |
|---|---|---|
| Poles | 3-pole | |
| Fuse Size | NH1 | |
| Voltage | 690 V | |
| Item number | X1002291 | |
| Catalogue No | BL1B403K000 | |
| Description | NH-vertical fuse rail BSL Size NH1 690VAC 250A 3-Pole Bus bar system 185 mm With cable connection Screw - M12 bolts | |
| EAN/UPC Code | 4027597029715 | |
| Frequency (Hz) | 50 ... 60 Hz | |
| Rated voltage AC IEC | 690 V | |
| Ampere Rating | 250 A | |
| RoHS Compliant | Yes | |
| AC or DC | AC | |
| Fuse Size | NH1 | |
| Fuse Type/Class | DIN | |
| Design Details | 3 M12 bolts | |
| Number of Poles | 3-Pole | |
| Fuse Installation Method | Clip-in | |
| Max Fuse Rating | 250 A | |
| Max Power dissipation of Fuse Links Pn | 32 W | |
| Max Power dissipation of Solid Links Pn | 2.6 W | |
| Power Dissipation by Ith without Fuse-Links | 22 W | |
| Installation Mounting | Bus bar system 185 mm | |
| Product Width | 98 mm | |
| Product Length | 122.9 mm | |
| Product Height | 558 mm | |
| Sell Pack Quantity | 1 EA | |
| Sell Pack Weight | 3.2 kg | |
| Sell Pack Width | 100 mm | |
| Sell Pack Length | 130 mm | |
| Sell Pack Height | 765 mm | |
| Product group | Fuse Rails | |
| Conventional Free Air thermal Current With Fuse-Links Ith | 250 A | |
| Product Weight | 3.2 kg | |
| Conventional Free Air thermal Current - Solid Links | 400 A |
Frequently Asked Questions
What is the Mersen X1002291 used for?
The X1002291 is an NH vertical fuse rail designed for mounting NH fuse-links within industrial low voltage power distribution systems.
What current rating does this fuse rail support?
The X1002291 has a rated current of 250 A.
Which fuse size is compatible with this unit?
The unit is designed for NH Size 1 fuse-links.
What voltage is the X1002291 designed for?
It is rated for operation on systems up to 690 V AC IEC.
Which busbar system is required?
The fuse rail is designed for direct installation onto a 185 mm busbar system.
Trusted for Industrial Electrical Distribution
Mersen BSL fuse rails are trusted by panel builders, OEMs and electrical engineers for delivering dependable circuit protection, safe installation and reliable long-term performance in modern power distribution systems.
