Mersen EDFS403RS0 - 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 enclosures types. Mersen features NEMA 4X non-metallic and stainless steel 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. 40 Amps, with a red selector handle in a Nema 4X Non-Metallic .
Mersen

EDFS403RS0

Alternate Item Number: 782001420260

UPC: 782001420260

Contact for Pricing

Overview

The **Mersen EDFS403RS0** is a 40A enclosed disconnect switch featuring a **NEMA 4X non-metallic enclosure** and a **red selector handle** for clear ON/OFF status indication. Designed for industrial environments, this switch provides robust protection against dust, water ingress, and corrosive conditions, making it ideal for harsh applications. The **IP66-rated enclosure** ensures resistance to hose-directed water and dust, while the **non-metallic construction** eliminates galvanic corrosion risks and reduces maintenance costs. With a **600VAC rating** and compliance to **UL 508, UL 98, and CSA standards**, the EDFS403RS0 is suitable for motor control, HVAC systems, and machinery disconnects. Available in both **fusible and non-fusible versions**, this compact switch offers flexibility for diverse electrical system requirements. The **integral ground lug** and **easy screw mounting** simplify installation, while the **clear ON/OFF indication** enhances operational safety. Trusted for its durability and reliability, the EDFS403RS0 is a cost-effective solution for critical disconnect applications in manufacturing, food processing, water treatment, and renewable energy sectors. 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 enclosures types. Mersen features NEMA 4X non-metallic and stainless steel 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. The EDFS403RS0 is a 40 Amp model, with a red selector handle in a Nema 4X Non-Metallic enclosure.
  • 40A current rating for industrial applications
  • NEMA 4X non-metallic enclosure with IP66 protection
  • Red selector handle for clear ON/OFF status indication
  • Available in fusible and non-fusible versions
  • Compliant with UL 508, UL 98, and CSA standards

Specifications

Amperage Rating
40 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
Enclosure
NEMA 4X Non-Metallic
Family Code
168
Family Description
Disconnect Switches - VAC
Number Of Poles
3
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)
5 IN x 7 IN x 7 IN
Package Dimensions (L x W x H)
12.7 cm x 17.78 cm x 17.78 cm
Package Weight (Imperial)
2.000 L
Package Weight (Metric)
0.907 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.