Mersen FEY-11-21 - Fuse Block 600VAC 600VDC Class CC 30A 2-Pole 11-21 Crimp
Mersen

FEY-11-21

Alternate Item Number: 782001301347

UPC: 782001301347

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Overview

Mersen FEY-11-21 is a 600VAC/600VDC Class CC 30A 2-pole fuse block designed for quick installation with captive securing nuts and screws. The fuse holder accommodates Class CC fuses (e.g., ATDR, ATMR, ATQR) and features three internal O-rings per pole for water-resistant sealing. Captive O-rings are color-coded (red for dual pole) for easy identification. Optional cone-shaped insulator boots provide a watertight seal, with breakaway versions including boots standard. The breakaway feature safely disconnects the load during pole knockdown, keeping fuses encapsulated on the load side for easy reconnection. UL listed (Guide IZLT, File E52283) and CSA certified (Class 6225, File 32169), this fuse block meets UL 4248 requirements. Insulators are glass-filled polycarbonate (GFPC) with dielectric strength exceeding 2500V and temperature rating of 155°C. Applications include street lighting, parking lot lighting, traffic signaling, sports lighting, boats, marinas, and humid/corrosive environments.
  • 600VAC/600VDC voltage rating with 30A maximum current
  • Class CC fuse compatibility (ATDR, ATMR, ATQR)
  • Dual-pole design with captive securing nuts/screws for quick installation
  • Three internal O-rings per pole for water-resistant sealing
  • Breakaway feature safely disconnects load during pole knockdown

Specifications

AC Voltage Rating
600 V
Amperage Rating
30 A
Application
Street lighting Parking lot lighting Traffic signaling Sports lighting Boats and marinas Humid/corrosive environments
Brand Name
Mersen
Class
Class CC
Color
Red
Connection
Crimp
Connection Type
Crimp
Current Rating
30 A
DC Voltage Rating
600 V
IP Rating
IP66
Material
Polyethylene
Material
Poly
Maximum Operating Temperature
80 C
Mounting
In-Line
Number Of Poles
2-pole
Number of poles
2
Operating Temperature, Maximum
176 F
Phase
2
Poles
2-Pole
Series
11-21
Size
4.3 x 2.96 x 0.99;109.22 x 75.184 x 25.146 in;mm
Size
1-1/2" x 13/32" (10 x 38 mm)
Special Features
Breakaway version quickly disconnects line side during pole knockdown in compliance with state and federal highway commission standards 3 O-rings per pole for water tight applications Colored O-rings for quick detection Single and dual poles Accepts midget or Class CC fuses Wide assortment of terminal variations High heat, impact resistant insulator Captive nut or screw for quick installations Polarized dual pole provides simultaneous disconnection Permanently installed neutral versions quickly identified by white nuts Tulip fuse clip for improved contact and low losses Environmentally friendly-no lead solder used Highly visible catalog number even with insulation boots installed Wire gauge size identified on insulation boots for quick, accurate trimming Time delay for motor starting and transformer inrush
Standard
UL Listed Class CC Guide IZLT, File E52283 UL Recognized Component Midget Guide IZLT2, File E52283 CSA Certified Class CC and Midget Class 6225, File 32169
Type
UL/CSA Fuse Bases
Voltage Rating
600VAC 600VDC
Voltage Rating
600 VAC
Package Dimensions (L x W x H)
4.3 in x 2.96 in x 0.99 in
Package Dimensions (L x W x H)
109.22 mm x 75.184 mm x 25.146 mm
Package Weight (Imperial)
0.200 lb
Package Weight (Metric)
0.091 kg
Fuse Block 600VAC 600VDC Midget 30A 2-Pole 11-21 Crimp

FEX-11-21

Fuse Block 600VAC 600VDC Midget 30A 2-Pole 11-21 Crimp
BC 1P in-line FUSHLDR ClassCC fuses. The Littelfuse 600 V in-line watertight fuse holders are the ideal answer for all high humidity and corrosive environments where fuses are required. Available in both breakaway and non-breakaway, single and double pole versions, these fuse holders allow maximum flexibility for any application. Applications: Street, alley, and parking lot lighting. Security and perimeter lighting. Traffic signals. Outdoor illuminated signs. Sports lighting. Boat electrical circuits. Tractors and yard equipment. General outdoor circuit protection. Benefits: Safety-Permits individual fixture or device to be disconnected from circuit for servicing. Eliminates possibility of shock. Individual fixture fusing-Prevents loss of one fixture through accident, vandalism, or end of life from darkening the entire circuit. Simplifies maintenance- Being able to immediately identify the one faulted fixture eliminates testing the entire circuit, speeds repair and permits servicing the individual unit while the rest of the circuit is functioning. Reduces damage from fault-Can prevent faulted ballast or other failure from severely damaging fixture or device, reducing necessary repair or need of replacement. Features: Watertight-Internal O-ring provides watertight seal. Superior terminal seeds-Ultrasonically-welded terminals provide maximum strength and eliminate leaking at terminals. Break-Resistant- Fiberglass –reinforced polymer body resists damage from dropping or impact much better than phenolic look-alikes. Flexible terminations-Accommodates a wide range of stranded or solid copper conductors, with either crimp or screw terminals. One-pole and two-pole models- available to accommodate all system voltages up to 600v.

LECBC

BC 1P in-line FUSHLDR ClassCC fuses. The Littelfuse 600 V in-line watertight fuse holders are the ideal answer for all high humidity and corrosive environments where fuses are required. Available in both breakaway and non-breakaway, single and double pole versions, these fuse holders allow maximum flexibility for any application. Applications: Street, alley, and parking lot lighting. Security and perimeter lighting. Traffic signals. Outdoor illuminated signs. Sports lighting. Boat electrical circuits. Tractors and yard equipment. General outdoor circuit protection. Benefits: Safety-Permits individual fixture or device to be disconnected from circuit for servicing. Eliminates possibility of shock. Individual fixture fusing-Prevents loss of one fixture through accident, vandalism, or end of life from darkening the entire circuit. Simplifies maintenance- Being able to immediately identify the one faulted fixture eliminates testing the entire circuit, speeds repair and permits servicing the individual unit while the rest of the circuit is functioning. Reduces damage from fault-Can prevent faulted ballast or other failure from severely damaging fixture or device, reducing necessary repair or need of replacement. Features: Watertight-Internal O-ring provides watertight seal. Superior terminal seeds-Ultrasonically-welded terminals provide maximum strength and eliminate leaking at terminals. Break-Resistant- Fiberglass –reinforced polymer body resists damage from dropping or impact much better than phenolic look-alikes. Flexible terminations-Accommodates a wide range of stranded or solid copper conductors, with either crimp or screw terminals. One-pole and two-pole models- available to accommodate all system voltages up to 600v.
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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.