Mersen N320471 - Square Body High-Speed Fuse Protistor® NH Size 2 aR 690VAC IEC 700VAC UL 200A With Double indicator Plain Blades
Mersen

N320471

Alternate Item Number: NH2UD69V200PV

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Overview

The Mersen N320471 Protistor® NH Size 2 aR high-speed fuse-link (SKU: N320471) is engineered for semiconductor protection in power conversion equipment, including diodes, thyristors, GTOs, and IGBT devices. Rated at 690VAC (IEC) / 700VAC (UL), this fuse-link delivers a rated current of 200A with a breaking capacity of 200kA, ensuring reliable fault interruption. The fuse features pure silver fuse elements embedded in solidified sand for controlled arcing and lower I²t values, optimizing protection while minimizing energy let-through. All contact surfaces are silver-plated, and hardware is non-magnetic for enhanced conductivity and corrosion resistance. The N320471 includes a double indicator with plain blades for compatibility with NH modular system fuse-holders and fuse switch disconnectors per DIN 43620/00. With a power dissipation of 42W at rated current, this fuse-link is designed for high-efficiency operation in demanding industrial environments. The compact square body design and 0.24kg weight make it suitable for space-constrained installations. Ideal for applications in solar inverters, motor drives, UPS systems, and other power electronics requiring precise semiconductor protection.
  • Rated voltage: 690VAC (IEC) / 700VAC (UL)
  • Rated current: 200A with 200kA breaking capacity
  • Pure silver fuse elements for low I²t and controlled arcing
  • Double indicator with plain blades for NH modular systems
  • Silver-plated contacts and non-magnetic hardware for durability
  • Power dissipation: 42W at rated current
  • Weight: 0.24kg; compact square body design
  • Compliant with DIN 43620/00 for global NH system compatibility

Specifications

AC Voltage Rating
700 V
Amperage Rating
200 A
Application
Protection of inverters, UPS systems, motor drives and similar 700V or less equipment.
Brand Name
Mersen
Case
Ceramic
Connection
Plain Blades
Mounting
Clip
Size
5.91 x 2.05 x 2.91 in
Size
150 x 52 x 74 mm
Special Features
Multiple body sizes aR Class according to VDE 636-23 and IEC 60269-4 Very low I²t for improved semiconductor protection Ultra fast acting Current limiting Superior cycling capability Indication system with double indicator
Standard
UL/CSA Recognized Component IEC 60269-4 Compliance
Sub Brand
Protistor®
Type
NH square Body High-Speed Fuse-Links AC Protection
Type Of Indicators
Double indicator
Voltage Rating
700 V
Wattage
83 W
Package Dimensions (L x W x H)
5.91 in x 2.05 in x 2.91 in
Package Dimensions (L x W x H)
150 mm x 52 mm x 74 mm
Package Weight (Imperial)
1.367 lb
Package Weight (Metric)
0.620 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.