Mersen V320155 - Square Body High-Speed Fuse Protistor® NH Size 00 aR 690VAC IEC 700VAC UL 63A With Double indicator Plain Blades
Mersen

V320155

Alternate Item Number: NH00UD69V63PV

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Overview

The Mersen V320155 Protistor® NH Size 00 aR high-speed fuse-link (SKU: V320155) delivers precise semiconductor protection in demanding power conversion applications. Rated for 63A at 690VAC (IEC) / 700VAC (UL), this fuse-link is engineered for NH modular systems per DIN 43620/00, ensuring global compatibility with fuse-holders and switch-disconnectors. The fuse element is constructed from pure silver with a die-cut design embedded in solidified sand, optimizing arc control for superior I²t performance (pre-arcing I²t: 128 A²s, clearing I²t: 700 A²s at rated voltage) and a high interrupting rating of 170kA. Silver-plated contact surfaces and non-magnetic hardware enhance conductivity and reduce thermal stress. The double indicator feature enables visual status confirmation or actuation of a microswitch for remote monitoring. With a power dissipation of 36.1W at rated current and a compact 0.2kg package, the V320155 is ideal for protecting diodes, thyristors, GTOs, and IGBTs in variable frequency drives, UPS systems, and industrial power electronics. Compliance with IEC 60269-4 and UL 248-14 standards ensures reliability in global installations. The fuse-link meets stringent aR (fast-acting) requirements for semiconductor protection, providing rapid response to fault conditions while maintaining low let-through energy. Its NH Size 00 design allows for easy installation and replacement in standard fuse bases, reducing downtime in critical applications. The 690VAC (IEC) / 700VAC (UL) rating ensures compatibility with high-voltage industrial systems, while the 63A current rating balances protection and continuous operation. The solidified sand filling enhances thermal stability and arc quenching, while the pure silver element ensures consistent performance across temperature variations. The non-magnetic hardware prevents eddy current losses, improving efficiency in high-frequency applications. The double indicator system provides dual-functionality for both local and remote status monitoring, enhancing system safety and maintenance efficiency.
  • 63A current rating at 690VAC (IEC) / 700VAC (UL)
  • NH Size 00 aR fuse-link per DIN 43620/00 for modular system compatibility
  • Pure silver fuse element in sand matrix for optimized arc control (I²t: 128/700 A²s)
  • 170kA interrupting rating with 36.1W power dissipation at 63A
  • Double indicator for visual status or microswitch actuation

Specifications

AC Voltage Rating
700 V
Amperage Rating
63 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 1.18 x 2.36 in
Size
78.5 x 30 x 60 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
12.5 W
Package Dimensions (L x W x H)
3.09 in x 1.18 in x 2.36 in
Package Dimensions (L x W x H)
78.5 mm x 30 mm x 60 mm
Package Weight (Imperial)
0.441 lb
Package Weight (Metric)
0.200 kg
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Fuse Block 600VAC 600VDC Class CC 30A 1/4in Quick Connect / Solder 90 angle screw Knob Panel Mount
Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

C331156

Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20
Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8

1SCM8

Fuse Block 1500VAC 1500VDC 400A 1-Pole Stud M8
Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

E1062696

Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20
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.
9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in

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.