Mersen EFFS163RS0 - Mersen Enclosed Disconnect Switches are designed to meet customer's requirements for compact and durable individual disconnecting means. Both fusible and non-fusible versions are available in a variety of enclosure types. Mersen features NEMA 4X non-metallic enclosures that are extremely durable and provide the ultimate protection for harsh environments and conditions. The enclosed disconnect switch range offers safety, ease of installation, space savings and operational convenience to end-users. 16 amp UL508 NFDS disconnect with  red selector handle in a  NEMA 3R enclosure.
Mersen

EFFS163RS0

Alternate Item Number: 782001423285

UPC: 782001423285

Contact for Pricing

Overview

The Mersen EFFS163RS0 is a compact and durable 16-amp, non-fused disconnect switch designed for individual disconnecting means in industrial applications. This UL 508 Listed device features a NEMA 3R rated non-metallic enclosure, providing essential protection against rain, sleet, and external ice formation, making it suitable for outdoor installations. Engineered for safety and operational convenience, the EFFS163RS0 is ideal for load break switching and serving as a separate disconnect means within sight of motor loads, complying with NEC® Article 430. It also meets OSHA lockout/tagout requirements, ensuring safe de-energization for maintenance. The clear ON/OFF indication provided by the red selector handle enhances operational safety. Key specifications include a 600VAC rating and a 16A current capacity. The non-metallic NEMA 3R enclosure offers excellent corrosion resistance for harsh environments. Installation is simplified with provided knockouts and easy screw mounting. Mersen's commitment to quality ensures reliability and longevity. Applications include food processing, conveyor systems, and general harsh industrial environments. SKU: EFFS163RS0. UNSPSC Code: 39122233. Country of Origin: US.
  • 16 Amp, 600VAC rating
  • UL 508 Listed for industrial control equipment
  • NEMA 3R rated non-metallic enclosure for outdoor protection
  • Red selector handle for clear ON/OFF indication
  • Suitable for load break switching and circuit isolation

Specifications

Amperage Rating
16 A
Application
Load break switching Separate disconnect means within sight of all motor loads to comply with NEC® Article 430 Circuit isolation Service entrance ratings available Food processing Conveyor systems Harsh industrial environments
Brand Name
Ferraz Shawmut
Color
Red
Current Rating
16 A
Enclosure
NEMA 3R
Material
Non-Metallic
NEMA Rating
Type 3R
Number Of Poles
3
Poles
3P
Series
EFFS
Special Features
Suitable for use as Motor Disconnect Meets OSHA lockout/tagout requirements NEMA rated enclosures Knockouts provided Easy screw mounting Selector or pistol handles in black or red/yellow
Standard
UL 508A UL508 UL98 CSA IEC versions available.
Type
Enclosed Disconnect Switch
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
10.9 IN x 6.3 IN x 11.55 IN
Package Dimensions (L x W x H)
27.686 cm x 16.002 cm x 29.337 cm
Package Weight (Imperial)
8.750 L
Package Weight (Metric)
3.969 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.