Mersen A550C8-75 - Medium Voltage Capacitor Fuse 5500VAC 8A Female Stud To Female Tube Visual Indicator Amp-Trap®
Mersen

A550C8-75

Alternate Item Number: A550C8-75

UPC: 782001355012


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Overview

The Mersen A550C8-75 Amp-Trap® medium voltage capacitor fuse (SKU: A550C8-75) provides essential protection for medium-voltage capacitor banks. Engineered to ANSI C37-41 standards, this fuse is rated for 5500VAC and 8A, making it suitable for both indoor general-purpose and outdoor weatherproof enclosure applications. Its current-limiting design ensures silent operation without noise or discharge, effectively preventing capacitor case rupture or dielectric failure by offering robust short-circuit and overload protection. The A550C8-75 features a female stud to female tube connection, ensuring straightforward compatibility with standard capacitor bank configurations. This non-disconnecting fuse requires an external disconnect switch for safe isolation. Mersen offers various mounting configurations designed for cost-effectiveness and space-saving benefits while maintaining high reliability. This fuse is an ideal choice for protecting medium-voltage capacitor banks in industrial power systems, substations, and renewable energy installations where precise fault interruption and extended service life are critical requirements.
  • 5500VAC, 8A rating for medium voltage capacitor protection
  • Amp-Trap® series current-limiting fuse
  • Female stud to female tube connection
  • ANSI C37-41 compliant
  • Visual indicator for status monitoring

Specifications

AC Voltage Rating
5500 V
Amperage Rating
8 A
Application
Capacitor Protection Power Factor Correction Equipment Harmonic Filtering Equipment Induction Heating System High Power Drive Welders
Body Material
GMG
Connection
Female Stud To Female Tube
Connection Material
Tin-Plated Brass
Connection Type
Female Stud To Female Tube
Current Rating
8 A
Interrupt Rating
65 kA
Mounting
Direct Mount
Mounting Type
Female Stud to Female Tube
Series
Amp-Trap®
Size
9.75 x 2;247.65 x 50.8 in;mm
Special Features
High interrupting capacity Current limitation Blown-fuse indication Direct mount Clip style mount Bus mount Non-venting for silent operation
Standard
ANSI
Type
Capacitor Protection Fuses
Type of Indicators
Visual Indicator
Voltage Rating
5500 VAC
Package Dimensions (L x W x H)
9.75 in x 2 in x 2 in
Package Dimensions (L x W x H)
247.65 mm x 50.8 mm x 50.8 mm
Package Weight (Imperial)
2.500 lb
Package Weight (Metric)
1.134 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.