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Mersen 9F61BNW743 - 9F61 Size C Live Parts 2in long
Mersen

9F61BNW743

Alternate Item Number: 9F61BNW743

UPC: 782001398590


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Overview

Mersen 9F61BNW743 live parts are designed for Size C fuse supports in medium voltage applications. Manufactured by Mersen (SKU: 9F61BNW743), these live parts are 2 inches long and compatible with ferrule diameters of 2 inches. Used primarily in potential transformer circuits or where an isolating device is in series with the fuse, they support both vertical and horizontal mounting. The Type EK series includes live parts for both ends of fuse supports and disconnecting switches. Indoor (Type EK) and outdoor (Type EKO) variants are available. Order one live part per fuse support or disconnecting switch.
  • Size C live parts for Mersen fuse supports
  • 2-inch long design for Size C ferrule diameter
  • Compatible with vertical and horizontal mounting
  • Used in potential transformer circuits and isolating applications
  • Indoor (Type EK) and outdoor (Type EKO) variants available

Specifications

Application
Utilities Industrial Plants Hospitals Shopping Centers Schools Office Buildings
Brand Name
Ferraz Shawmut
Connection
Bus
Mounting
Screw
Type
Accessories - Medium Voltage Fuses
Type
IEEE MV Fuse Clips - Live Parts
Package Dimensions (L x W x H)
8 IN x 2.84 IN x 2.84 IN
Package Dimensions (L x W x H)
20.32 cm x 7.2136 cm x 7.2136 cm
Package Weight (Imperial)
3.000 L
Package Weight (Metric)
1.361 kg
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9F61 Size B Clips 1.6in
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9F61 Size D Live Parts 3in long
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9F61BNW747

9F61 Size D Live Parts 3in long NLD kit
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9F61BDW905

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Clip for Cylindrical fuses IEC Diameter 20mm 125A Direct Screw Mount
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Clip for Cylindrical fuses IEC Diameter 27mm 250A Direct Screw Mount

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.