Mersen HD40 - 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 for 40 amp NFDS series.
Mersen

HD40

Alternate Item Number: 3605340558852

Contact for Pricing

Overview

The Mersen HD40 Direct-Mount Handle (SKU: HD40) is a precision-engineered component designed for Mersen’s 40 Amp NFDS series of Low Voltage Disconnect Switches. This handle is engineered for direct mounting, eliminating the need for additional hardware or adapters, which streamlines installation and reduces downtime in industrial applications. The HD40 is constructed from durable materials to withstand harsh environments, including dust, moisture, and corrosive elements, with options for IP65 and NEMA 3R or NEMA 4X ratings for enhanced protection. The handle is available in black and red colors, allowing for clear visual indication of switch status. Safety is a key feature, with locking capabilities available to prevent unauthorized or accidental operation, a critical requirement in industrial control panels and power distribution systems. The HD40 is ideal for panel builders, maintenance technicians, and engineers who require reliable, quick-access switching in applications such as manufacturing, automation, utilities, and renewable energy systems. Compatible exclusively with Mersen’s 40A NFDS series, this handle ensures seamless integration and long-term reliability, backed by Mersen’s global reputation for electrical safety and power management solutions.
  • Direct-mount design for Mersen 40A NFDS series disconnect switches
  • Available in black or red with IP65 and NEMA 3R/4X ratings
  • Locking capability for enhanced safety and unauthorized operation prevention
  • Durable construction for harsh industrial environments
  • Simplifies installation and reduces downtime

Specifications

Application
for use with Mersen switches
Brand Name
Ferraz Shawmut
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)
0.7874 IN x 0.7874 IN x 0.7874 IN
Package Dimensions (L x W x H)
20 mm x 20 mm x 20 mm
Package Weight (Imperial)
0.042 L
Package Weight (Metric)
0.019 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.