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Mersen P322588 - Square Body High-Speed Fuse Protistor® NH Size 3 gS 690VAC IEC 700VAC UL 550A With Double indicator

Mersen P322588 Square Body High-Speed Fuse Protistor® NH Size 3 gS 690VAC IEC 700VAC UL 550A With…

Alternate Item Number: NH3GS69V550PV


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 Protistor® NH Size 3 gS fuse-link (SKU P322588) provides high-speed semiconductor protection with a 550A rated current and 690VAC (IEC)/700VAC (UL) voltage rating. Designed for direct installation into NH modular system fuse-holders and fuse switch disconnectors per DIN 43620/00 standards, this fuse-link features pure silver die-cut elements embedded in solidified sand for controlled arcing and low I²t values. It delivers a high interrupting rating of 200 kA with a pre-arcing I²t of 37 kA²s and clearing I²t of 215 kA²s at rated voltage. Power dissipation is 56W. The double indicator provides visual status confirmation, while silver-plated contact surfaces and non-magnetic hardware ensure reliable performance. A low-voltage trip-indicator option is available for field-mountable microswitch integration. Ideal for protecting power conversion equipment including diodes, thyristors, GTOs, and IGBT devices in demanding industrial applications.
  • Rated current: 550A
  • Voltage rating: 690VAC (IEC) / 700VAC (UL)
  • High interrupting rating: 200 kA
  • Double indicator for visual status confirmation
  • Silver-plated contacts and non-magnetic hardware
  • Pre-arcing I²t: 37 kA²s, clearing I²t: 215 kA²s
  • Power dissipation: 56W
  • Compatible with NH modular system fuse-holders per DIN 43620/00
  • Low-voltage trip-indicator option available

Specifications

AC Voltage Rating
700 V
Amperage Rating
550 A
Application
Protection of inverters, motor drives, UPS systems and similar 700V or less equipments.
Brand Name
Mersen
Case
Ceramic
Connection Type
NH modular system fuse-holders and fuse switch disconnectors
Current Rating
550A
Material
Pure silver die-cut elements, solidified sand, silver-plated contacts
Mounting
Clip
Mounting Type
Direct installation into NH modular system
Series
Protistor® NH
Size
5.91 x 2.83 x 3.5 in
Size
150 x 72 x 89 mm
Size
NH Size 3
Special Features
Multiple body sizes gS Class according to IEC 60269-4 Low I²t for improved semiconductor protection Fast acting Highly current limiting Excellent cycling capability Reduced power dissipation No derating in standard NH fusegear High widstanding against inrush current and overloads
Standard
IEC 60269-4 Compliance UL/CSA Recognized Component CCC GB 1359.4
Sub Brand
Protistor®
Type
NH square Body High-Speed Fuse-Links AC Protection
Type Of Indicators
Double indicator
Voltage Rating
700 V
Voltage Rating
690VAC (IEC) / 700VAC (UL)
Wattage
56 W
Package Dimensions (L x W x H)
5.91 in x 2.83 in x 3.5 in
Package Dimensions (L x W x H)
150 mm x 72 mm x 89 mm
Package Weight (Imperial)
2.315 lb
Package Weight (Metric)
1.050 kg
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Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip

30323R

Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip
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 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

What is the rated voltage for these Protistor fuses?

The rated voltage for these Protistor fuse-links is 690/700VAC.

What sizes are available for the Protistor NH fuses?

The Protistor fuses are available in NH sizes 000, 00, 1, 2, and 3.

What is the ampere range for these fuses?

The ampere range for these fuses is from 16 A up to 630 A.

What standards do these Protistor fuses comply with?

These fuses comply with IEC 60269-4, are UL/CSA Recognized Components, and meet CCC GB 1359.4.

What is the interrupting rating (I.R. AC) for these fuses?

The interrupting rating (I.R. AC) according to IEC standards is 160 kA.

What is the purpose of the low voltage trip-indicator?

Each fuse-link can be equipped with a low voltage trip-indicator that can operate a field mountable microswitch.

What are the key features of these Protistor fuses?

Features include multiple body sizes, gS Class, low I²t, fast acting, high current limiting, and excellent cycling capability.

What applications are these fuses designed for?

These fuses are designed for protecting inverters, motor drives, UPS systems, and other equipment rated at 700V or less.

What is the typical power dissipation for a 16A fuse?

For a 16A rated current, the power dissipation at In is 5 W for size 000.

What is the weight of a size 000 fuse?

The weight of a size 000 fuse is 0.13 kg.

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.