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Mersen H300617 - Square Body High-Speed Fuse Protistor® Size 71 aR 1000VAC IEC 1100VAC UL 630A With Striker Open Slot Blades
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Mersen H300617 Square Body High-Speed Fuse Protistor® Size 71 aR 1000VAC IEC 1100VAC UL 630A With…

Alternate Item Number: PC71UD10C630EF


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Specification Sheet

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Overview

The Mersen H300617 Protistor® Size 71 aR high-speed fuse-link (SKU: H300617) delivers ultra-fast semiconductor protection for power conversion equipment, including diodes, thyristors, and IGBT devices. Rated at 630A with 1000VAC (IEC) or 1100VAC (UL) capability, this fuse-link is engineered for applications requiring precise fault interruption and minimal I²t values. The square body design ensures compatibility with multiple global mounting styles, including DIN 110 (Type TTF) configurations with M8 blade terminals and anti-rotation hole for secure installation. Key features include silver-plated contact surfaces for reduced electrical resistance and non-magnetic hardware to prevent operational interference. The fuse elements are die-cut and embedded in solidified sand, optimizing arcing control and interrupting ratings. An optional low-voltage trip indicator with microswitch activation provides remote fault signaling, visible via an indicator lever after fuse operation. Dimensions for Type TTF configuration: 74mm length, 56.4mm width, 34.6mm height, with M8 blade terminals spaced 51mm apart. The striker mechanism ensures positive indication of fuse operation. Designed for Size 71 aR applications, this fuse-link is ideal for high-speed semiconductor protection in power electronics, motor drives, and renewable energy systems where rapid fault clearance is critical.
  • 630A rated current with 1000VAC (IEC) / 1100VAC (UL) voltage capability
  • Square body design with Type TTF DIN 110 mounting (M8 blade terminals)
  • Ultra-fast aR-rated semiconductor protection for diodes, thyristors, and IGBTs
  • Silver-plated contacts and non-magnetic hardware for low resistance and interference-free operation
  • Optional microswitch trip indicator with visible lever for remote fault signaling
  • Optional low-voltage trip indicator with microswitch activation for remote fault signaling

Specifications

AC Voltage Rating
1100 V
Amperage Rating
630 A
Application
Protection of inverters, motor drives, UPS systems and similar 690V or less equipments.
Brand Name
Mersen
Case
Ceramic
Connection
Open Slot Blades
Connection Type
Open Slot Blades
Current Rating
630 A
Current Rating
630A
Material
Silver-plated contact surfaces, non-magnetic hardware, die-cut fuse elements embedded in solidified sand
Material
Silver, Sand
Material
Silver-plated contact surfaces, non-magnetic hardware, solidified sand embedding
Mounting
Bolted
Mounting Type
Square body, multiple worldwide mounting styles
Mounting Type
Open Slot Blades
Mounting Type
Square body design with multiple worldwide mounting styles
Mounting Type
Square body design for multiple global mounting styles
Series
Protistor®
Size
Size 71 aR
Size
Size 71
Size
5.88 x 2.01 x 2.22 in
Size
149.4 x 51 x 56.5 mm
Special Features
Multiple body sizes and terminals or blades combination aR Class according to IEC 60269-4 and VDE 636-23 Very low I²t for improved semiconductor protection Ultra fast acting Current limiting Superior cycling capability
Standard
IEC 60269-4 Compliance UL/CSA Recognized E76491 CCC GB 13539.4 for Asian market only
Sub Brand
Protistor®
Type
Square Body High-Speed Fuse-Links AC Protection
Type Of Indicators
Striker
Voltage Rating
1100 V
Voltage Rating
1000VAC (IEC) / 1100VAC (UL)
Voltage Rating
1000 VAC (IEC) / 1100 VAC (UL)
Voltage Rating
1000VAC (IEC) or 1100VAC (UL)
Wattage
120 W
Package Dimensions (L x W x H)
5.88 in x 2.01 in x 2.22 in
Package Dimensions (L x W x H)
149.4 mm x 51 mm x 56.5 mm
Package Weight (Imperial)
1.190 lb
Package Weight (Metric)
0.540 kg
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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.
9F61 Size B Clips 1.6in

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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.