Mersen A550T15E-TI - Mersen PT fuses are current-limiting fuses with high interrupting rating, used for the primary winding protection of potential transformer. They are small dimension ferrule type fuses and mount in standard clips. Current ratings are from 0.25A to 5A. 5500 Volts 15 Amps A550T series.
Mersen

A550T15E-TI

Alternate Item Number: 782001375997

UPC: 782001375997

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Overview

The Mersen A550T15E-TI is a specialized current-limiting fuse engineered for the critical task of protecting the primary windings of potential transformers (PTs). Designed with a robust 5500V rating and a precise 15A current capacity, this fuse is an indispensable component in high-voltage electrical systems. Its small-dimension ferrule type construction ensures compatibility with standard fuse clips, simplifying installation and maintenance in a wide array of industrial and utility applications. As a high-interrupting rating fuse, the A550T15E-TI is built to swiftly and reliably interrupt fault currents, thereby safeguarding sensitive potential transformer circuitry from damage. Potential transformers are vital for voltage measurement and protection relays in power grids, and their primary winding integrity is paramount for accurate system monitoring and control. The Mersen A550T15E-TI provides this essential protection, offering peace of mind and operational continuity. Key features of the Mersen A550T15E-TI include: * **High Interrupting Rating:** Effectively clears fault currents to prevent catastrophic damage. * **Current-Limiting Design:** Minimizes let-through energy during fault conditions. * **5500V Voltage Rating:** Suitable for demanding high-voltage applications. * **15A Current Rating:** Precisely matched to the protection requirements of potential transformer primary windings. * **Ferrule Type Construction:** Compact design for easy integration with standard fuse holders. * **Mersen Quality:** Manufactured by a trusted leader in electrical protection solutions.
  • Current-limiting fuse for potential transformer primary winding protection
  • High interrupting rating to safeguard sensitive circuitry
  • 5500V voltage rating for high-voltage applications
  • 15A current rating precisely matched to PT protection needs
  • Small dimension ferrule type construction for standard clip mounting

Specifications

Brand Name
Ferraz Shawmut
Package Dimensions (L x W x H)
7.44 IN x 1.59 IN x 1.59 IN
Package Dimensions (L x W x H)
18.8976 cm x 4.0386 cm x 4.0386 cm
Package Weight (Imperial)
0.500 L
Package Weight (Metric)
0.227 kg
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POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.

LCC5

POWR-JAW clamps improve the contact between fuse and clip. The unnecessary heat from poor contact due to the loss of spring force in the clips can cause nuisance fuse opening and premature aging of surrounding components. High temperature phenolic resin knob designed for the most severe environments 7 sizes to provide effective coverage. Simple design makes installation easy.
9F61 Size B Clips 1.6in

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9F61 Size B Clips 1.6in

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.