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Mersen M300759 - Square Body High-Speed Fuse Protistor® Size 32 aR 600VAC IEC 650VAC UL 1100A With Striker Flush ends metric threads
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Mersen M300759 Square Body High-Speed Fuse Protistor® Size 32 aR 600VAC IEC 650VAC UL 1100A With…

Alternate Item Number: PC32UD60V1100TF


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Specification Sheet

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Overview

The Mersen Protistor® M300759 is a high-speed fuse-link designed for advanced semiconductor protection. Engineered with an aR ultra-fast acting characteristic, this square body fuse is ideal for safeguarding diodes, thyristors, and IGBT devices in power conversion equipment. It boasts a rated voltage of 600VAC (IEC) and 650VAC (UL), with a substantial rated current of 1100A. The fuse-link features a high breaking capacity of 200 kA, ensuring robust protection against short circuits. Its construction includes die-cut elements embedded in solidified sand to manage arcing, resulting in a low pre-arcing I²t of 270 kA²s and a clearing I²t at rated voltage of 1450 kA²s. The power dissipation at rated current is 140W. Contact surfaces are silver-plated, and all hardware is non-magnetic for optimal performance and longevity. This specific model, M300759, is a Size 32 fuse with flush ends and metric threads, offering flexibility in equipment design. It can be equipped with an optional low voltage trip-indicator for microswitch operation. The Protistor® series provides maximum flexibility in equipment design and ultimate protection for today's power conversion equipment, with various body sizes and mounting styles available.
  • aR ultra-fast acting fuse for semiconductor protection
  • Rated voltage: 600VAC (IEC) / 650VAC (UL)
  • Rated current: 1100A
  • High breaking capacity: 200 kA
  • Square body design with flush ends and metric threads

Specifications

AC Voltage Rating
650 V
Amperage Rating
1100 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
Connection Type
Flush ends metric threads
Current Rating
1100A
Material
Silver-plated, non-magnetic hardware
Mounting
Bolted
Mounting Type
metric threads
Series
Protistor®
Size
1.99 x 2.32 x 2.56 in
Size
50.6 x 59 x 65 mm
Size
Size 32
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
600VAC
Voltage Rating
650 V
Wattage
140 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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Fuse Holder Modulostar® Size 10x38 IEC 690VAC 690VDC 3-Pole IP20

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Fuse Holder UltraSafe™ 800VAC 1000VDC UL Fuse size 14x51 1-Pole Visual Indicator Microswitch Pressure Plate IP20

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Fuse Block 600VAC 600VDC Class CC 30A 3-Pole Pressure Plate with Reinforced Clip

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9F61 Size B Clips 1.6in

9F61BWW460

9F61 Size B Clips 1.6in
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

What is the voltage range for Protistor size 32 aR fuses?

The Protistor size 32 aR fuses have a voltage range of 450 to 690 VAC according to IEC standards and 700 VAC according to UL standards.

What is the breaking capacity of these fuses?

The rated breaking capacity for these fuses is 200 kA AC.

What is the power dissipation for a 315A fuse with threaded terminals?

The power dissipation at rated current (In) for a 315A fuse with threaded terminals is 71 W.

What are the typical applications for these fuses?

These fuses are designed for the protection of inverters, motor drives, UPS systems, and similar equipment operating at 690V or less.

What standards do these fuses comply with?

The fuses comply with IEC 60269-4, are UL/CSA Recognized (E76491), and meet CCC GB 13539.4 for the Asian market.

What types of semiconductor devices do these fuses protect?

These fuses are engineered to provide protection for semiconductors such as diodes, thyristors, and IGBT devices.

What are the available terminal types for size 32 fuses?

Available terminal types include threaded terminals (M10 and 3/8in - 16 unified coarse), DIN80 blades, DIN110 blades, short slotted blades, long slotted blades, and EF blades for bolted connections.

What is the characteristic of these fuses?

These are aR class, ultra-fast acting, current-limiting fuses with superior cycling capability.

What is the purpose of the solidified sand within the fuse?

The solidified sand helps control arcing characteristics, resulting in a lower I²t and a high interrupting rating level.

Can these fuses indicate a tripped status?

Yes, each fuse-link can be equipped with a low voltage trip-indicator that can operate a field-mountable microswitch.

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.