Mersen 9F61CEF209 - Fuse supports, non-disconnecting, are used primarily in potential transformer circuits, or where there is some other disconnecting or isolating device in series with the fuse in the circuit. Disconnecting switch devices have the additional feature of serving to isolate the equipment they protect. It should be noted that disconnecting switches are not load-breaking devices, therefore, the circuit must be open prior to the fuse disconnection. Select either a fuse support or a disconnecting switch for each fuse. Fuse supports and disconnecting switches include live parts for both ends. Both fuse supports and fuse disconnect switches can be mounted vertically or horizontally. The type EK are used for indoor installations while the type EKO are used outdoors. 8250 Volts EKO-1C CEF series.
Mersen

9F61CEF209

Alternate Item Number: 9F61CEF209

UPC: 782001398699

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Overview

The Mersen 9F61CEF209 is an outdoor fuse support from the EKO-1C CEF series, designed for medium voltage applications up to 8250 Volts. This non-disconnecting fuse support is primarily utilized in potential transformer circuits or in conjunction with other disconnecting or isolating devices. It is crucial to note that while disconnecting switch devices offer isolation, they are not load-breaking and require the circuit to be open before fuse disconnection. The EKO type is specifically engineered for outdoor installations, providing robust protection in exposed environments. Fuse supports and disconnecting switches, including this model, feature live parts at both ends and offer versatile mounting options, allowing for vertical or horizontal installation to suit site requirements. The CEF series is compatible with specific fuse sizes and ferrule diameters, ensuring precise application. For instance, the 9F61CEF209 is associated with fuse sizes that accommodate ferrule diameters such as 2.75/5.5/8.25 inches, with a corresponding mounting length of 12 inches. Mersen's commitment to quality is evident in their comprehensive range of fuse supports and disconnect switches, covering voltages from 2.4kV to 38kV. This product is proudly distributed by Gross Automation, ensuring reliable access to essential electrical protection components. Refer to Mersen's technical documentation for detailed specifications on storage, mounting, and maintenance procedures.
  • Outdoor rated EKO-1C CEF series fuse support
  • Designed for 8250 Volt medium voltage circuits
  • Non-disconnecting type, suitable for PT circuits
  • Supports vertical or horizontal mounting configurations
  • Compatible with specific fuse sizes and ferrule diameters (e.g., 2.75/5.5/8.25 inch ferrule, 12 inch length)

Specifications

AC Voltage Rating
8.25 kV
Application
Utilities Industrial Plants Hospitals Shopping Centers Schools Office Buildings
Brand Name
Mersen
Connection
Bus
Material
Porcelain
Mounting
Screw
Number Of Poles
1
Size
21 x 4 x 11.93 in
Size
533.4 x 101.6 x 303.022 mm
Sub Brand
Unassigned
Type
IEEE MV Fuse Supports
Voltage Rating
8250 VAC
Package Dimensions (L x W x H)
21 in x 4 in x 11.93 in
Package Dimensions (L x W x H)
533.4 mm x 101.6 mm x 303.022 mm
Package Weight (Imperial)
55.000 lb
Package Weight (Metric)
24.948 kg
Fuse supports, non-disconnecting, are used primarily in potential transformer circuits, or where there is some other disconnecting or isolating device in series with the fuse in the circuit. Disconnecting switch devices have the additional feature of serving to isolate the equipment they protect. It should be noted that disconnecting switches are not load-breaking devices, therefore, the circuit must be open prior to the fuse disconnection. Select either a fuse support or a disconnecting switch for each fuse. Fuse supports and disconnecting switches include live parts for both ends. Both fuse supports and fuse disconnect switches can be mounted vertically or horizontally. The type EK are used for indoor installations while the type EKO are used outdoors. 8250 Volts EKO-1DD CEF series.

9F61CEF409

Fuse supports, non-disconnecting, are used primarily in potential transformer circuits, or where there is some other disconnecting or isolating device in series with the fuse in the circuit. Disconnecting switch devices have the additional feature of serving to isolate the equipment they protect. It should be noted that disconnecting switches are not load-breaking devices, therefore, the circuit must be open prior to the fuse disconnection. Select either a fuse support or a disconnecting switch for each fuse. Fuse supports and disconnecting switches include live parts for both ends. Both fuse supports and fuse disconnect switches can be mounted vertically or horizontally. The type EK are used for indoor installations while the type EKO are used outdoors. 8250 Volts EKO-1DD CEF series.
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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.