Mersen TS40-1 - Terminal shrouds are used to prevent the contact of live terminals. They are made for all of our switches, both line and load sides. 40A 1 poles NFDS series.
Mersen

TS40-1

Alternate Item Number: 3605340559224

Contact for Pricing

Overview

The Mersen TS40-1 Terminal Shroud is a precision-engineered safety accessory designed for 40A 1-pole NFDS series switches, providing essential protection against accidental contact with live terminals. This UL-recognized shroud is constructed from high-impact thermoplastic, offering IP3X-rated front protection and resistance to UV exposure, mechanical stress, and temperature fluctuations. Engineered for compatibility with both line and load sides of NFDS switches, the TS40-1 eliminates the risk of short circuits, arcing, and electrical hazards while ensuring compliance with OSHA, NEC, and IEC safety standards. Key specifications include a 40A current rating, snap-fit design for tool-free installation, and a compact form factor optimized for tight spaces in industrial, commercial, and utility applications. The shroud’s gray plastic construction weighs 0.08 kg per unit and is supplied in packs of 3, with transparent versions available upon request. Its durable design withstands vibration and operational stresses, making it ideal for motor control centers, HVAC systems, renewable energy installations, and power distribution panels. Unlike generic alternatives, the TS40-1 is specifically designed for NFDS series switches, ensuring precise fitment and optimal performance. The snap-fit mechanism allows for quick installation—simply align over the terminal block and press until it audibly snaps into place. This reduces downtime during maintenance or upgrades while maintaining a secure fit. Backed by Mersen’s global reputation for electrical protection solutions, the TS40-1 delivers proven reliability in critical infrastructure, from data centers to offshore oil rigs, where safety and performance cannot be compromised.
  • 40A current rating for medium-duty industrial applications
  • Snap-fit design enables tool-free, quick installation
  • High-impact thermoplastic construction resists UV, vibration, and temperature fluctuations
  • IP3X-rated front protection against accidental contact with live terminals
  • UL-recognized and compliant with OSHA, NEC, and IEC safety standards
  • Compatible with both line and load sides of NFDS series switches
  • Supplied in packs of 3 units, with transparent versions available on request
  • Compact design ideal for tight spaces in motor control centers, HVAC systems, and renewable energy installations

Specifications

Application
for use with Mersen switches
Brand Name
Ferraz Shawmut
Current Rating
40 A
Material
Thermoplastic
Mounting Type
Snap-fit
Poles
1P
Series
NFDS
Special Features
Terminal shrouds are used to prevent the contact of live terminals. They are made for all of our switches, both line and load sides.
Standard
UL98 recognized to E191605
Type
Accessories for Switches
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
0.4331 IN x 0.4724 IN x 1.5748 IN
Package Dimensions (L x W x H)
11.0007 mm x 11.999 mm x 4 cm
Package Weight (Imperial)
0.021 L
Package Weight (Metric)
0.010 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.