Mersen H300893 - Square Body High-Speed Fuse Protistor® Size 32 aR 500VAC IEC 550VAC UL 1600A With Striker Flush ends metric threads
Mersen

H300893

Alternate Item Number: PC32UD50V1600TF


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Overview

The Mersen Protistor® Size 32 aR high-speed fuse-link (SKU: H300893) delivers ultra-fast semiconductor protection for power conversion equipment. Rated at 1600A with a 500VAC/550VAC rating, this square-body fuse-link is engineered for applications requiring precise fault interruption and minimal I²t let-through. The fuse-link features die-cut elements embedded in solidified sand for controlled arcing, ensuring a high interrupting rating of 200kA. All contact surfaces are silver-plated for superior conductivity, and hardware is non-magnetic to prevent interference. The striker-equipped design allows for remote indication via a microswitch, enabling system-level monitoring. With metric thread connections and flush ends, it integrates seamlessly into IEC and UL-compliant designs. Typical applications include protection for diodes, thyristors, and IGBT devices in industrial drives, renewable energy inverters, and motor controllers. The Protistor® series offers flexibility with multiple mounting styles, including metric threads, DIN blades, and slotted blades, ensuring compatibility with global standards. Power dissipation at rated current is 165W, with a package weight of 0.60kg. Pre-arcing I²t is 870 kA²s, and clearing I²t at rated voltage is 3600 kA²s, providing predictable fault response. Designed for environments where reliability and precision are critical, this fuse-link meets IEC 550VAC and UL 1600A standards, making it a trusted choice for semiconductor protection in high-power applications.
  • Rated 1600A, 500VAC/550VAC for high-power semiconductor protection
  • Ultra-fast aR response with pre-arcing I²t of 870 kA²s and clearing I²t of 3600 kA²s
  • Square body design with metric thread connections and flush ends for secure mounting
  • Striker-equipped for remote indication via microswitch; silver-plated contacts and non-magnetic hardware
  • Meets IEC 550VAC and UL 1600A standards; 200kA interrupting rating

Specifications

AC Voltage Rating
550 V
Amperage Rating
1600 A
Application
Protection of inverters, motor drives, UPS systems and similar 690V or less equipments.
Brand Name
Mersen
Case
Ceramic
Connection
End Contact with Threaded Holes
Mounting
Bolted
Size
1.99 x 2.32 x 2.56 in
Size
50.6 x 59 x 65 mm
Special Features
Multiple body sizes and terminals or blades combination aR Class according to IEC 60269-4 and VDE 636-23 Very low I²t for improved semiconductor protection Ultra fast acting Current limiting Superior cycling capability
Standard
IEC 60269-4 Compliance UL/CSA Recognized E76491 CCC GB 13539.4 for Asian market only
Sub Brand
Protistor®
Type
Square Body High-Speed Fuse-Links AC Protection
Type Of Indicators
Striker
Voltage Rating
550 V
Wattage
165 W
Package Dimensions (L x W x H)
1.99 in x 2.32 in x 2.56 in
Package Dimensions (L x W x H)
50.6 mm x 59 mm x 65 mm
Package Weight (Imperial)
1.204 lb
Package Weight (Metric)
0.546 kg
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9F61 Size B Clips 1.6in

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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.

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.