Mersen FEXN-91-91-BA Fuse Block 600VAC 600VDC Midget 30A 2-Pole N-91-91-BA Set Screw
Alternate Item Number: 782001391416
UPC: 782001391416
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Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- Accommodates 1-1/2" x 13/32" midget fuses up to 30A
- Rated for 600VAC and 600VDC operation
- Durable glass-filled polycarbonate (GFPC) insulator
- Set screw connection type for secure wiring
- UL recognized and CSA certified for safety and compliance
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 | Midget |
Connection | Set Screw |
DC Voltage Rating | 600 V |
Material | Polyethylene |
Maximum Operating Temperature | 80 C |
Mounting | In-Line |
Number Of Poles | 2-pole |
Number of poles | 2 |
Operating Temperature, Maximum | 176 F |
Phase | 2 |
Size | 5.8 x 2.96 x 1;147.32 x 75.184 x 25.4 in;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 | 600 VAC |
Package Dimensions (L x W x H) | 5.8 in x 2.96 in x 1 in |
Package Dimensions (L x W x H) | 147.32 mm x 75.184 mm x 25.4 mm |
Package Weight (Imperial) | 0.400 lb |
Package Weight (Metric) | 0.181 kg |

LEBBA
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.
9T58K0000G24
Unclassified Transformrs. Small Core & Cl Tran. 9t58 Ip C&C Kit Xfrmr. Fuse Kits For EncapsulTED Xfmrs. 0000G24Frequently Asked Questions
What types of fuses can be used with Mersen's FEB-11-S fuse holders?
The FEB-11-S fuse holders are designed to accommodate 1-1/2" x 13/32" midget fuses.
What is the maximum voltage and amperage rating for these fuse holders?
These fuse holders have a maximum rating of 600VAC/DC and 30A, with the FEG series rated for 60A.
What is the temperature rating for the FEB-11-S fuse holders?
The fuse holders have a temperature rating of 155°C.
What are the Short Circuit Current Ratings (SCCR) for these fuse holders?
SCCR is 200kA for Class CC fuses and 100kA for Midget fuses.
Are these fuse holders water-resistant?
Yes, three internal O-rings per pole seal the fuse holder, providing a water-resistant compartment for the fuse.
What applications are these fuse holders suitable for?
They are suitable for street lighting, parking lot lighting, traffic signaling, sports lighting, boats, marinas, and humid/corrosive environments.
Can insulator boots be added for a watertight seal?
Optional cone-shaped insulator boots can be added to provide a watertight seal, especially for breakaway versions which include them standard.
What is the purpose of the breakaway feature?
The optional breakaway feature safely disconnects the load in case of a pole knockdown, keeping fuses encapsulated.
What are the tightening torque specifications for the terminals?
Tightening torque for single and double set screw terminations is 35 lbs.-in., and for the dual pole fastening screw, it's 10-15 lbs.-in.
What wire sizes can the FEB-11-21 model accept?
The FEB-11-21 model accepts #8-#12 AWG solid wire and #12-#14 AWG stranded wire.
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.









