Mersen EHFBJ4003BP0 - 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. 400 amp J FDS disconnect with red pistol handle in a NEMA 4 enclosure.
Mersen

EHFBJ4003BP0

Alternate Item Number: 782001372309

UPC: 782001372309

Contact for Pricing

Overview

The Mersen EHFBJ4003BP0 Enclosed Disconnect Switch represents a pinnacle of robust design and operational reliability for critical industrial power control applications. Engineered to meet stringent customer requirements for compact yet exceptionally durable individual disconnecting means, this unit offers unparalleled safety and efficiency. Mersen's commitment to quality is evident in the selection of NEMA 4X non-metallic enclosures, which provide superior protection against the ingress of dust, water, and corrosive elements, making it an ideal choice for the most demanding and harsh environments. This specific model, SKU EHFBJ4003BP0, features a substantial 400-amp current rating, ensuring it can handle significant electrical loads with confidence. The inclusion of a highly visible red pistol handle facilitates quick and intuitive operation, allowing for rapid disconnection in emergency situations or during routine maintenance, thereby enhancing overall workplace safety. Available in both fusible and non-fusible configurations, the Mersen enclosed disconnect switch range offers remarkable flexibility to suit a diverse array of application needs. Whether the requirement is for overcurrent protection via fuses or simply a means of isolation, Mersen provides a solution. The design prioritizes ease of installation, a crucial factor for electrical contractors and maintenance personnel, minimizing downtime and labor costs. Furthermore, its space-saving profile is a significant advantage in industrial control panels and machinery where space is often at a premium. The operational convenience afforded by this disconnect switch translates directly into improved workflow and reduced risk of operational errors. Industries that commonly benefit from the Mersen EHFBJ4003BP0 include chemical processing plants, food and beverage manufacturing, water and wastewater treatment facilities, and any sector where equipment is exposed to corrosive atmospheres or frequent washdowns. The non-metallic NEMA 4X enclosure is particularly advantageous in these settings, resisting chemical attack and UV degradation, ensuring a long service life. Mersen's reputation for manufacturing high-performance electrical components is well-established, and this enclosed disconnect switch is a testament to their dedication to safety, durability, and user-centric design. Professionals selecting disconnecting means for their critical infrastructure can trust Mersen to deliver a product that not only meets but exceeds expectations for performance and longevity. The EHFBJ4003BP0 is more than just a switch; it's a vital component for ensuring the safe and efficient operation of industrial electrical systems.
  • 400 Amp current rating for high-capacity industrial applications.
  • Durable NEMA 4X non-metallic enclosure provides superior protection in harsh environments.
  • Red pistol handle ensures easy operation and visual identification for enhanced safety.
  • Compact and space-saving design ideal for control panels and machinery.
  • Fusible and non-fusible versions available to meet diverse application requirements.

Specifications

Amperage Rating
400 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
400 A
Enclosure
NEMA 4
Material
Non-Metallic
Mounting
Screw
Nema Rating
Type 4X
Number Of Poles
3
Series
EHFBJ
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 V
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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.