Mersen D320071 - Square Body High-Speed Fuse Protistor® NH Size 000 aR 690VAC IEC 700VAC UL 200A With Double indicator Plain Blades
Mersen

D320071

Alternate Item Number: NH000UD69V200PV

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Overview

The Mersen D320071 Protistor® NH Size 000 aR high-speed fuse-link delivers precise semiconductor protection in power conversion equipment operating at 690VAC (IEC) or 700VAC (UL). Designed for NH modular systems per DIN 43620/00, this 200A fuse-link integrates seamlessly into fuse-holders and switch disconnectors for direct installation. Its pure silver fuse elements, embedded in solidified sand, ensure controlled arcing characteristics with low I²t values, enabling faster fault clearance and reduced thermal stress on protected devices. Key specifications include a rated breaking capacity of 200kA, pre-arcing I²t of 4690 A²s, and clearing I²t of 24000 A²s at rated voltage. The fuse dissipates 42W at 200A, maintaining operational stability in high-energy environments. All contact surfaces are silver-plated with non-magnetic hardware to prevent corrosion and ensure consistent conductivity. The double indicator enables remote monitoring via microswitch activation, enhancing system safety and maintenance efficiency. Engineered specifically for semiconductor protection—diodes, thyristors, GTOs, and IGBTs—the Protistor® series provides the reliability required in modern power electronics. Its NH 000 size ensures compatibility with global modular fuse systems, offering installation flexibility across industrial applications. The fuse-link’s compact 0.24kg design optimizes panel space while delivering robust protection against overcurrent events.
  • Rated for 690VAC (IEC) / 700VAC (UL) operation
  • 200A current rating with 200kA breaking capacity
  • Pure silver fuse elements in solidified sand for controlled arcing
  • NH Size 000 compatibility with DIN 43620/00 modular systems
  • Double indicator for remote monitoring via microswitch activation

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
3.09 x 0.83 x 2.07 in
Size
78.5 x 21 x 52.5 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
36.1 W
Package Dimensions (L x W x H)
3.09 in x 0.83 in x 2.07 in
Package Dimensions (L x W x H)
78.5 mm x 21 mm x 52.5 mm
Package Weight (Imperial)
0.287 lb
Package Weight (Metric)
0.130 kg
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9F61 Size B Clips 1.6in

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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.

LCC5

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.

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.