Mersen P076166 - High performance square body fuse-link Protistor® Size 93 aR 1500VAC IEC 350A With Striker Flush ends metric threads
Mersen

P076166

Alternate Item Number: PC93UF15C350TF


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Overview

The Mersen P076166 is a high-performance Protistor® square body fuse-link, specifically designed for AC protection with an aR rating. Engineered by Mersen, a leader in electrical protection, this fuse-link offers robust protection for semiconductor devices such as SCRs, diodes, thyristors, GTOs, and IGBTs. Its pure silver die-cut elements are embedded in solidified sand, a construction that precisely controls arcing characteristics, resulting in low I²t values and a high breaking capacity. This specific model, SKU P076166, features a 350A rated current and operates at a maximum AC voltage of 1500V (IEC). The fuse-link is designed with flush ends and metric threads for secure mounting. All contact surfaces are silver-plated, and the hardware is non-magnetic to ensure optimal performance and longevity. A key feature is the integrated low-voltage trip-indicator, which can be easily connected to a field-mountable microswitch, allowing for remote indication of fuse status even while the fuse is in service. This design flexibility and advanced protection capability make the Mersen Protistor® fuse-links ideal for modern power conversion equipment where precise and reliable protection is paramount. The square body design, combined with various mounting styles and ampere ratings, provides engineers with significant flexibility in equipment design. The breaking capacity for this fuse-link is 126 kA at its rated voltage, ensuring it can safely interrupt fault currents. Power dissipation at rated current (In) is 86 W, contributing to efficient operation within the protected equipment. Manufactured in the US, this fuse-link adheres to stringent quality standards.
  • Mersen Protistor® square body fuse-link for AC protection (aR rating)
  • Rated current: 350A; Rated voltage: 1500VAC (IEC)
  • Designed for semiconductor protection (SCRs, diodes, thyristors, GTOs, IGBTs)
  • Features pure silver die-cut elements embedded in solidified sand for low I²t and high breaking capacity
  • Equipped with a low-voltage trip-indicator and flush ends with metric threads

Specifications

AC Voltage Rating
1500 V
Amperage Rating
350 A
Application
Protection of rectifiers, inverters, DC drivers, UPS systems, reduces voltage motor starters and other equipment in globally accepted aplications.
Brand Name
Mersen
Case
Ceramic
Connection
End Contact with Threaded Holes
Mounting
Bolted
Size
3.98 x 2.93 x 3.37 in
Size
101 x 74.5 x 85.5 mm
Special Features
Extremely fast acting Current limiting Very low l²t Worldwide acceptability Superior cycling ability Choice of mounting styles Broad range of ampere rating
Standard
IEC 60269.4
Sub Brand
Protistor®
Type
High performance square body fuse-links AC protection
Type Of Indicators
Striker
Voltage Rating
1500 V
Wattage
133 W
Package Dimensions (L x W x H)
3.98 in x 2.93 in x 3.37 in
Package Dimensions (L x W x H)
101 mm x 74.5 mm x 85.5 mm
Package Weight (Imperial)
3.578 lb
Package Weight (Metric)
1.623 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.