Skip to main content

All locations

Please select your country & language

China | 中国
Germany | Deutschland

Your country is not in the list?

Go to our international website:

Mersen EP International Website
Country / Language:  France / English
Contact us

Approvals & Standards

  • IEC 60269-4 Compliance
  • UL/CSA Recognized E76491

Key features & benefits

The 690/700V Protistor® fuse-links provide maximum flexibility in equipment design and ultimate protection for today's power conversion equipment. These square body ultra-fast acting aR fuse-links are available in different body sizes, each size having multiple worldwide acceptable mounting styles.
They have been engineered to provide state-of-the-art protection for semiconductors: diodes, thyristors and IGBT devices. They are assembled with die-cut elements embedded in solidified sand, which helps control arcing characteristics for a lower I²t and high interrupting rating level. All contact surfaces are silver plated and all hardware is non-magnetic.
Each fuse-link can be equipped with a low voltage trip-indicator which can operate a field mountable microswitch.

More specifications


  • Protection of inverters, motor drives, UPS systems and similar 690V or less equipments.

Product Specifications

Item Number


Catalog number



Square Body High-Speed Fuse Protistor® Size 2x33 aR 550VAC IEC 600VAC UL 3000A With Striker Plates with Metric Threaded Holes  

EAN/UPC code


Rated voltage AC UL

600   V

Rated voltage AC IEC

550   V

Rated current

3000   A



Fuse size




Clearing I2t At Rated Voltage

9000   kA²s

Melting I2t

1870   kA²s

AC Max I.R./Breaking Capacity: I1

150   kA

Power Dissipation at Rated Current Value

440   W

Indication System


Indication System Type


Contact materials

Silver-Plated Copper  

Connection/Terminal Type

Plates with Metric Threaded Holes  

Body/Insulating Material


Product Weight

2.5   kg

Product Width

170   mm

Product Length

54.8   mm

Product Height

78.5   mm

Sell Pack Quantity

1   EACH

Sell Pack Weight

2.5   kg

Sell Pack Width

95   mm

Sell Pack Length

250   mm

Sell Pack Height

95   mm