Mersen B201366 - NH fuse-bases are available for delivery in single-pole and three-pole designs and can be closely mounted in parallel rows. Each three-pole base is upplied with two phase-partition walls. NH-ISO plugon covers which clip onto the contact springs can also be supplied for these bases. Ceramic fuse-bases in sizes 00 to 3 are provided with a single-part steatite base, while size 4 has a metal baseplate with 2 ceramic bases. Plastic fuse-bases have a single-part plastic base. The stable silver-plated contact springs are made of electrolytic copper and formed from one piece. Separate springing is provided by highly resilient captive steel springs, making the contact invulnerable to high thermal stress. Size 4 NH fuse-bases are designed for size 4 fuse-links with 8 mm contact blades. Size 4a fuse-bases are designed for size 4a fuse-links with 6 mm contact blades 0 mount 0 connector dual NH2 and NH3 cable terminal .
Mersen

B201366

Alternate Item Number: 3605340170450

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Minimum Qty: 5

Multiplier: 5

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Overview

Mersen NH Fuse-Bases (SKU: B201366) provide robust and reliable circuit protection for industrial electrical systems. Available in sizes 00 through 4a, these fuse-bases are constructed from high-quality materials including durable ceramic, steatite, metal, and plastic, ensuring longevity and performance under demanding conditions. Offered in both single-pole and three-pole configurations, the three-pole bases are supplied with two phase-partition walls for enhanced safety and isolation. Connectivity is flexible with options for NH-ISO plug-on covers and dual NH2/NH3 cable terminals. The internal design features stable, silver-plated contact springs made from electrolytic copper, formed in a single piece for consistent conductivity. Highly resilient captive steel springs provide separate springing, making the contacts resistant to high thermal stress. Specific sizes are engineered for compatibility: Size 4 NH fuse-bases are designed for fuse-links with 8mm contact blades, while Size 4a fuse-bases accommodate fuse-links with 6mm contact blades. These fuse-bases are integral to power distribution, motor control, and electrical panel applications where dependable overcurrent protection is paramount. Mersen's commitment to quality ensures these fuse-bases meet stringent industrial standards for safety and operational efficiency.
  • Available in sizes 00 to 4a for versatile fuse-link compatibility.
  • Constructed from high-quality ceramic, steatite, metal, or plastic.
  • Single-pole and three-pole designs offered, with phase partition walls on 3-pole units.
  • Features stable, silver-plated electrolytic copper contact springs for reliable connection.
  • Resistant to thermal stress due to captive steel springs.
  • Specific designs for 8mm (Size 4) and 6mm (Size 4a) contact blades.
  • Optional NH-ISO plug-on covers and dual NH2/NH3 cable terminals for flexible integration.

Specifications

Application
NH fuse-bases are designed for fuse-links with rated voltages up to 690VAC and 440VDC.
Brand Name
Ferraz Shawmut
Connection Type
Dual NH2 and NH3 cable terminal
Material
Ceramic, Steatite, Metal, Plastic
Mounting Type
Parallel rows, Mounted
Poles
Single-pole, Three-pole
Series
NH Fuse-Bases
Size
00 to 4a
Standard
IEC 60269 Compliance Dimensions in accordance with DIN 43623
Type
IEC NH Fuse Bases
Voltage Rating
690 VAC
Package Dimensions (L x W x H)
2.125 IN x 0.65 IN x 0.75 IN
Package Dimensions (L x W x H)
5.3975 cm x 16.51 mm x 19.05 mm
Package Weight (Imperial)
1.311 L
Package Weight (Metric)
0.595 kg
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

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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.