Mersen Y301712 - Square Body High-Speed Fuse Protistor® Size 72 gR 690VAC IEC 700A With Striker Flush ends metric threads
Mersen

Y301712

Alternate Item Number: PC72GB69V700TF


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Overview

The Mersen Y301712 Protistor® gR square body high-speed fuse-link delivers precise semiconductor protection in demanding power conversion applications. Rated for 690VAC and 700A, this Size 72 fuse-link is engineered for full-range overload and short-circuit fault protection, ensuring optimal uptime in industrial equipment. The fuse-link features pure silver, die-cut elements embedded in solidified sand for superior arc control, reducing I²t and enabling a high interrupting rating of 150kA. Contact surfaces are silver-plated for low resistance, and all hardware is non-magnetic to prevent interference. The flush-end metric threads (ISO standard) facilitate secure mounting in tight spaces, while the square body design accommodates multiple worldwide mounting styles for maximum flexibility. Optional low-voltage trip-indicators with microswitch activation provide remote fault signaling. With a power dissipation of 140W at rated current, this fuse-link is optimized for high-efficiency power systems. Designed for high-performance applications, the Y301712 meets stringent IEC standards and is specifically tailored for semiconductor protection, motor drives, and renewable energy inverters where reliability and precision are critical. Its high-speed gR characteristics ensure rapid response to fault conditions, minimizing damage to sensitive components. The fuse-link's robust construction, including silver-plated contacts and non-magnetic hardware, enhances durability and performance in harsh environments. The square body design allows for versatile installation options, while the flush-end metric threads ensure compatibility with standard mounting configurations. With a high interrupting rating of 150kA, this fuse-link provides exceptional protection against extreme fault currents. The optional trip-indicators offer additional monitoring capabilities, enabling proactive maintenance and reducing downtime. Engineered for high-efficiency power systems, the Y301712 delivers consistent performance and reliability in critical applications.
  • Rated 690VAC, 700A for high-power applications
  • Square body design with flush-end metric threads (ISO standard)
  • Pure silver elements in solidified sand for superior arc control and low I²t
  • Interrupting rating: 150kA for robust fault protection
  • Optional trip-indicator for remote fault signaling via microswitch

Specifications

AC Voltage Rating
690 V
Amperage Rating
700 A
Application
Protection of inverters, motor drives, UPS systems and similar 690V or less equipments.
Brand Name
Mersen
Case
Ceramic
Connection
End Contact with Threaded Holes
Mounting
Bolted
Size
2.91 x 2.32 x 2.48 in
Size
74 x 59 x 63 mm
Special Features
Excellent cycling capability Multiple body sizes and terminals or blades combination Extremely fast acting Eliminate all overloads Low I²t for improved semiconductor protection gR Class according to IEC 60269-4 and VDE 636-23
Standard
IEC 60269-4 Compliance
Sub Brand
Protistor®
Type
Square Body High-Speed Fuse-Links AC Protection
Type Of Indicators
Striker
Voltage Rating
690 V
Wattage
89 W
Package Dimensions (L x W x H)
2.91 in x 2.32 in x 2.48 in
Package Dimensions (L x W x H)
74 mm x 59 mm x 63 mm
Package Weight (Imperial)
1.620 lb
Package Weight (Metric)
0.735 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.