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Approvals & Standards

  • IEC 60269-4 Compliance in AC and DC voltage
  • UL/CSA Recognized E76491 in AC and DC voltage
  • CCC GB 1539.4

Key features & benefits

The 690/760V Protistor® SC Series is a specific range to offer cost effective protection without concession on performance for power conversion equipment. These fuses have been engineered to provide protection for all semiconductors: diodes, thyristors and IGBT devices. They are assembled with bimetal silver and copper elements embedded in solidified sand, which helps control arcing characteristics for a lower I²t and high interrupting rating level. Contact surfaces are tin plated to get an optimized interface with the best quality/price ratio.
This SC Series has been conceived and specially optimized to match integrators’ and equipment manufaturers’ main requirements while offering competitive prices.

More specifications


  • Protection of standard power conversion systems such as low voltage drives, UPS, inverter systems and similar
  • All AC standard networks (up to 690V) or DC standard networks

Product Specifications

Item number


Catalogue No.


Short Description

Size 32 type TTI mit Schlagbolzen und Mikroschalter aR 630 A 690VAC  



Rated voltage AC UL

760   V

Rated voltage DC UL

550   V

Rated voltage AC IEC

690   V

Ampere Rating

630   A



Fuse Size




Clearing I2t At Rated Voltage

315   kA²s

Melting I2t

54.6   kA²s

AC Max I.R./Breaking Capacity: I1

200   kA

Power Dissipation at Rated Current Value

105   W

Indication System


Indication System Type

Striker Microswitch  

Connection/Terminal Material

Silver-Plated Brass  

Connection/Terminal Type

End Contact with Threaded Holes  

Body/Insulating Material


Product Weight

1.213   lb

Product Width

2.32   in

Product Length

1.99   in

Product Height

2.56   in

Sell Pack Quantity

12   EACH

Sell Pack Weight

14.55   lb