Mersen X1023428 - NH-vertical fuse rail BSL Size NH1 690VAC 250A 3-Pole Bus bar system 185 mm With cable connection Screw - M10 insert nut
Mersen

X1023428

Alternate Item Number: BL1E403K000


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Specification Sheet

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Overview

The Mersen BSL NH-vertical fuse rail (SKU X1023428) is a robust, touch-protected IP20 rated component designed for direct installation onto 185 mm bus bar systems in triple-pole arrangements. Engineered for reliability and safety, this Size 1 fuse rail is rated for 690VAC and a maximum current of 250A, adhering to IEC/EN 60269-2 and VDE 0636-2 standards for NH fuse-links. The system's modular design facilitates fast and easy installation, while offering a high degree of protection during both installation and maintenance phases. This specific model features cable connection via a screw with an M10 insert nut, ensuring secure and dependable electrical connections. The Mersen BSL system is built for efficiency, allowing for the installation of individual components to create customized fuse solutions. It is compatible with NH fuse-links up to Size 1, 250A, making it suitable for a range of industrial power distribution applications where precise overcurrent protection is critical. The 185 mm bus bar system compatibility ensures seamless integration into existing infrastructure. Mersen's commitment to quality is evident in the durable construction and safety features of the BSL fuse rails, providing peace of mind for electrical engineers and maintenance personnel. The system's design prioritizes user safety with its touch-proof nature, minimizing the risk of accidental contact with live parts. For applications requiring dependable protection and ease of use in 690VAC power systems, the Mersen BSL NH-vertical fuse rail is an optimal choice for secure and efficient electrical infrastructure.
  • Mersen BSL NH-vertical fuse rail, Size 1
  • Rated for 690VAC and 250A
  • 3-Pole configuration for triple-pole arrangements
  • Designed for 185 mm bus bar systems
  • Features cable connection with M10 insert nut for secure termination

Specifications

AC Voltage Rating
690 V
Amperage Rating
250 A
Application
Feeder pillarsCable distribution cabinetsLow voltage distribution units
Brand Name
Mersen
Connection
Screw
Connection Type
Screw - M10 insert nut
Current Rating
250A
IP Rating
IP20
Mounting
Bus bar system 185 mm
Mounting Type
Bus bar system
Number Of Poles
3
Poles
3-pole
Series
BSL
Size
4.84 x 3.86 x 21.97;122.936 x 98.044 x 558.038 in;mm
Size
NH1
Special Features
Installation on to 185 mm bus bar systemDimensions of bus bars and cable terminal connections are equivalent to those of MULTIVERT®
Standard
IEC 60 269-1, IEC 60 269-2For NH-fuse links size 1, 2, 3 in accordance with IEC/EN 60 269-2, VDE 0636-2
Type
IEC NH Fuse Rails
Voltage Rating
690VAC
Package Dimensions (L x W x H)
4.84 in x 3.86 in x 21.97 in
Package Dimensions (L x W x H)
122.936 mm x 98.044 mm x 558.038 mm
Package Weight (Imperial)
6.834 lb
Package Weight (Metric)
3.100 kg
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Frequently Asked Questions about Mersen

What industries and applications are Mersen products used for?

Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.

What are the main product lines offered by Mersen?

Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.

What are the key features of Mersen products?

Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.

What environmental ratings do Mersen products have?

Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.

What accessories are available for Mersen products?

Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.

How are Mersen products typically installed?

Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.

What certifications and standards do Mersen products comply with?

Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.

What technical support does Mersen offer?

Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.