Mersen TS250-14 - Terminal shrouds are used to prevent the contact of live terminals. They are made for all of our switches, both line and load sides. 250A 4 poles NFDS series.
Mersen

TS250-14

Alternate Item Number: 3605340559446

Contact for Pricing

Overview

Mersen TS250-14 Terminal Shrouds are precision-engineered protective components designed to safeguard live terminals in high-performance industrial switchgear. Specifically engineered for 250A, 4-pole NFDS series switches, these terminal shrouds deliver critical electrical safety by preventing accidental contact with energized terminals—a vital requirement in compliance-driven industrial environments. As a trusted solution from Mersen, a global leader in electrical protection and thermal management, the TS250-14 combines robust construction with field-proven reliability, making it an essential component in modern electrical distribution systems. These terminal shrouds are engineered to meet the stringent demands of industrial, commercial, and utility applications where operational safety and system integrity are paramount. Whether deployed in motor control centers, power distribution units, or switchgear assemblies, the TS250-14 ensures that technicians and maintenance personnel are protected from inadvertent exposure to live electrical components. This not only reduces the risk of arc flash and electrical shock but also supports compliance with OSHA, NEC, and IEC safety standards—critical considerations in high-voltage and high-current installations. Designed for seamless integration with Mersen’s NFDS series switches, the TS250-14 terminal shrouds are rated for continuous operation at 250 amperes, ensuring compatibility with heavy-duty industrial loads. Their 4-pole configuration aligns with the electrical architecture of NFDS switches, providing full coverage for both line and load sides. The shrouds are manufactured from high-impact, flame-retardant thermoplastic materials that withstand harsh environmental conditions, including temperature extremes, moisture, and mechanical stress. This durability ensures long-term performance without degradation, even in demanding industrial settings such as manufacturing plants, data centers, renewable energy installations, and utility substations. Installation is straightforward and tool-free, thanks to a snap-fit design that aligns precisely with switch terminal geometry. This design minimizes installation time and reduces the potential for human error during assembly—a critical factor in large-scale electrical projects. Additionally, the shrouds are color-coded and labeled for easy identification of polarity and phase, further streamlining maintenance and troubleshooting operations. Mersen’s reputation for engineering excellence and innovation in electrical protection solutions makes the TS250-14 Terminal Shrouds a preferred choice among electrical engineers, panel builders, and facility managers. With decades of experience serving industries that demand the highest levels of safety and reliability, Mersen delivers products that not only meet but exceed industry standards. The TS250-14 is backed by comprehensive technical documentation, including CAD drawings and installation guides, ensuring seamless integration into any project workflow. For professionals who prioritize safety, compliance, and long-term performance in their electrical systems, the Mersen TS250-14 Terminal Shrouds provide an indispensable layer of protection. Whether upgrading existing installations or designing new systems, these shrouds deliver the peace of mind that comes from knowing your terminals are fully guarded against accidental contact and environmental hazards.
  • Engineered for 250A, 4-pole NFDS series switches from Mersen
  • Prevents accidental contact with live terminals, reducing arc flash and shock risks
  • High-impact, flame-retardant thermoplastic construction for durability in harsh environments
  • Snap-fit design enables quick, tool-free installation and precise alignment
  • Supports compliance with OSHA, NEC, and IEC safety standards for industrial applications

Specifications

Application
for use with Mersen switches
Brand Name
Ferraz Shawmut
Current Rating
250 A
Poles
4
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)
3.27 IN x 1.3 IN x 2.6 IN
Package Dimensions (L x W x H)
8.3058 cm x 3.302 cm x 6.604 cm
Package Weight (Imperial)
0.050 L
Package Weight (Metric)
0.023 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.