Mersen HDF250T - Mersen’s wide range of handles for our Low Voltage Disconnect switches includes direct-mount, selector-style, and pistol-style in different lengths. Many of these handles have locking capabilities and are available in different colors and IP and NEMA ratings. We also have metal handles and special handles for flange-mounting. Direct mounted butterfly for 250 amp FDS series.
Mersen

HDF250T

Alternate Item Number: 3605340558715

Contact for Pricing

Overview

The Mersen HDF250T Direct-Mount Butterfly Handle is a precision-engineered component designed for Mersen’s 250 Amp FDS series low voltage disconnect switches. This handle provides a direct-mount solution, eliminating the need for additional shafts or adapters, ensuring a secure and stable connection with the switch mechanism. Constructed from durable metal, the HDF250T withstands harsh industrial environments, including exposure to dust, moisture, and mechanical stress, while delivering reliable performance over extended periods. The butterfly connection type offers smooth, precise switching action with clear tactile and visual feedback, reducing the risk of operator error during critical operations. This handle is ideal for applications requiring secure isolation of electrical circuits, such as manufacturing plants, data centers, utility substations, and commercial buildings. Its compatibility with the 250A FDS series makes it a trusted choice for medium-voltage disconnect applications where safety and operational integrity are paramount. Key features include: - **Direct-Mount Design**: Integrates seamlessly with Mersen 250A FDS series disconnect switches for a secure, stable connection. - **Durable Metal Construction**: Built to withstand industrial conditions, ensuring long-term reliability and resistance to wear. - **Butterfly Connection Type**: Provides precise switching action with clear operational feedback for enhanced safety. - **Enhanced Safety**: Facilitates reliable circuit isolation for maintenance and emergency shutdowns. - **Mersen Quality**: Backed by a leading manufacturer in electrical protection and power management solutions. The HDF250T is part of Mersen’s comprehensive portfolio of disconnect switch accessories, designed to meet the demanding requirements of modern industrial applications. Its robust engineering and thoughtful design contribute to the overall safety and efficiency of electrical power distribution systems.
  • Direct-mount design for secure integration with Mersen 250A FDS series disconnect switches
  • Durable metal construction for long-term reliability in harsh industrial environments
  • Butterfly connection type provides smooth, precise switching action with clear feedback
  • Enhances safety by facilitating reliable circuit isolation for maintenance and emergency shutdowns
  • Compatible with 250A FDS series low voltage disconnect switches

Specifications

Application
for use with Mersen switches
Brand Name
Ferraz Shawmut
Connection Type
Butterfly
Current Rating
250 A
Material
Metal
Mounting Type
Direct-mount
Series
FDS
Special Features
Mersen’s wide range of handles for our Low Voltage Disconnect switches includes direct-mount, selector-style, and pistol-style in different lengths. Many of these handles have locking capabilities and are available in different colors and IP and NEMA ratings. We also have metal handles and special handles for flange-mounting.
Standard
UL98 recognized to E191605
Type
Accessories for Switches
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
1.9685 IN x 1.9685 IN x 3.937 IN
Package Dimensions (L x W x H)
5 cm x 5 cm x 10 cm
Package Weight (Imperial)
0.368 L
Package Weight (Metric)
0.167 kg
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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.