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Mersen W223004 - NH plastic base Size NH4 1000VAC 1000VDC 1250A 1-Pole Screw Connection Screw
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Mersen W223004 NH plastic base Size NH4 1000VAC 1000VDC 1250A 1-Pole Screw Connection Screw

Alternate Item Number: BB41P


Documents & Media
Specification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

The Mersen W223004 is a single-pole NH plastic fuse base engineered for NH fuse-links of size 4, specifically designed to accommodate NH4 fuse-links. This model delivers a rated current of 1250A, ensuring robust performance in high-power industrial applications. It is rated for both 1000VAC and 1000VDC, providing versatility for AC and DC power systems. The fuse base features screw connections for secure and reliable installation, complemented by a stable silver-plated contact system made from electrolytic copper to minimize resistance and enhance conductivity. To maintain contact integrity under high thermal stress, the W223004 includes highly resilient captive steel springs. The construction incorporates a metal baseplate and two ceramic bases, delivering exceptional durability and reliability for power distribution and protection systems. Designed for direct mounting, it is compatible with NH fuse-links that feature 8mm contact blades, ensuring seamless integration into existing systems. The rated impulse withstand voltage is 8kV, providing protection against transient voltage spikes. This fuse base is ideal for applications requiring high current handling and dependable performance in demanding industrial environments, including power distribution panels, motor control centers, and industrial machinery.
  • Rated for 1250A current and 1000VAC/1000VDC voltage
  • Single-pole NH4 size plastic fuse base with screw connections
  • Silver-plated electrolytic copper contact system for stability
  • Captive steel springs maintain contact integrity under thermal stress
  • Direct mounting design compatible with 8mm contact blade NH fuse-links
  • Rated impulse withstand voltage of 8kV
  • Metal baseplate and ceramic bases for durability
  • Designed for high-power industrial power distribution and protection

Specifications

AC Voltage Rating
1000 V
Amperage Rating
1250 A
Application
For fuse-links with rated voltages up to 1000VAC and 1000VDC
Brand Name
Mersen
Connection
Screw
Connection Type
Screw Connection
Current Rating
1250A
DC Voltage Rating
1000 V
Material
Electrolytic Copper, Ceramic, Plastic
Material
Plastic, Ceramic, Metal
Mounting
Screw
Mounting Type
Direct Mounting
Number of Poles
1
Poles
1-pole
Series
NH
Size
11.85 x 3.35 x 5.24 in
Size
301 x 85 x 133 mm
Size
NH4
Special Features
Polyamide insulating bases Silver-plated contacts High-pressure spring contacts Screw or rail mounting Connecting cable: 50mm Multipolar bases possible by direct linkage in 00 size and with separator accessory in sizes 0, 1, 2 and 3 Variety of options for protecting active parts through use of accessories: separating plates, separator, cover shields and fuse cover Dual cable-connection system on 00 size: by screw or clamp
Standard
IEC 60269 Compliance Dimensions in accordance with DIN 43620 DIN VDE 0636-2, 0636-21
Type
IEC NH Fuse Bases
Voltage Rating
1000VAC/1000VDC
Voltage Rating
690 VAC
Voltage Rating
1000VAC 1000VDC
Package Dimensions (L x W x H)
11.85 in x 3.35 in x 5.24 in
Package Dimensions (L x W x H)
301 mm x 85 mm x 133 mm
Package Weight (Imperial)
4.916 lb
Package Weight (Metric)
2.230 kg
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Frequently Asked Questions

What is the rated impulse withstand voltage for NH fuse-bases?

The rated impulse withstand voltage (Uimp) is 6kV for sizes 00 and 8kV for sizes 0-4.

What are the voltage ratings for NH fuse-links?

NH fuse-links are suitable for rated voltages up to 1000VAC and 1000VDC.

What is the ampere range for NH fuse-bases?

The ampere range for these fuse-bases is from 160 A to 630 A.

What sizes of NH fuse-links are supported by these bases?

The bases are available for NH fuse-links sizes 00, 0, 1, 2, 3, and 4.

What types of mounting are available for NH plastic bases?

NH plastic bases can be mounted using screws or on a DIN rail.

What is the weight of the BB41P catalog number W223004?

The BB41P with catalog number W223004 weighs 2.23 kg.

What are the contact springs made of and how are they designed?

The contact springs are silver-plated, made of electrolytic copper, and designed to withstand high thermal stress.

Can a microswitch be used with these NH fuse-links?

A microswitch can be used with NH fuse-links that have a striker, operating when the fuse melts or is absent.

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.