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Approvals & Standards

  • IEC 60269-4 Compliance
  • UL/CSA Recognized E76491
  • CCC GB 13539.4

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 aR ultra-fast acting square body fuse-links are available in different body sizes, each size having multiple worldwide acceptable mounting styles.
The Protistor® have been engineered to provide state-of-the-art protection for semiconductors: diodes, thyristors and IGBT devices. Fuses 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


Item Description (ERP)

A 070 URD 32 KI 0500  


PROTISTOR® SB aR, short US slotted blade, KI, sz.32, 690VAC IEC-700VAC UL, 500A  

EAN/UPC code


Rated voltage AC UL

700   V

Rated voltage AC IEC

690   V

Rated current

500   A

ROHS Compliant




Fuse size




Clearing I2t At Rated Voltage

160   kA²s

Melting I2t

28   kA²s

AC Max I.R./Breaking Capacity: I1

200   kA

Power Dissipation at Rated Current Value

90   W

Indication System


Indication System Type


Contact materials

Silver-Plated Copper  

Connection/Terminal Type

Slotted Blades  

Body/Insulating Material


Product Weight

0.5523   kg

Product Width

59   mm

Product Length

134   mm

Product Height

65   mm

Sell Pack Quantity

3   EACH

Sell Pack Weight

1.6569   kg

Sell Pack Width

160   mm

Sell Pack Length

195   mm

Sell Pack Height

72   mm