Mersen Protistor Size 70 aR Fuses | 1100V-1250VAC Protection

The Mersen Protistor® size 70 aR series provides ultra-fast semiconductor protection for high-power conversion equipment. Engineered to safeguard diodes, thyristors, and IGBT devices, these square body fuse-links offer superior cycling capability and exceptionally low I²t to prevent catastrophic component failure in 1100V to 1250V AC applications.

Product Overview

Protistor® semiconductor fuses are assembled with pure silver, die-cut elements embedded in solidified sand, which provides rapid arc quenching and high interrupting ratings up to 100kA. Available in six different mounting styles — including threaded terminals, DIN blades, and notched blade connections — these fuses offer maximum flexibility for OEM cabinet builders and power electronics engineers.

Typical Applications

  • Power Inverters and Converters
  • Variable Speed Motor Drives
  • Large UPS Systems
  • Soft Starters and Rectifiers

Key Features & Benefits

  • aR Class Characteristic: Ultra-fast acting according to VDE 636-23 and IEC 60269-4.
  • Optimized Performance: Increased technical performances with higher ratings in a compact volume.
  • High Breaking Capacity: Rated for up to 150kA (size-dependent) for heavy industrial protection.
  • Global Certification: Recognized by UL/CSA E76419 and CCC GB 13539.4 for international distribution.

Product Range & Selection Guide

Size 70 Type TTF (M8 Threaded)

1000V–1250V AC IEC • 50A to 500A • M8 Threaded Mounting

Catalog Number Voltage (IEC) Current (In) Clearing I²t Action
PC70UD13C50TFItem: C301095 1250 V 50 A 980 A²s REQUEST QUOTE
PC70UD13C63TFItem: M300483 1250 V 63 A 1680 A²s REQUEST QUOTE
PC70UD13C80TFItem: N300484 1250 V 80 A 3780 A²s REQUEST QUOTE
PC70UD13C100TFItem: P300485 1250 V 100 A 6750 A²s REQUEST QUOTE
PC70UD13C125TFItem: Q300486 1250 V 125 A 10500 A²s REQUEST QUOTE
PC70UD13C160TFItem: R300487 1250 V 160 A 21000 A²s REQUEST QUOTE
PC70UD13C200TFItem: S300488 1250 V 200 A 38000 A²s REQUEST QUOTE
PC70UD13C250TFItem: T300489 1250 V 250 A 77000 A²s REQUEST QUOTE
PC70UD12C280TFItem: N300714 1200 V 280 A 106000 A²s REQUEST QUOTE
PC70UD12C315TFItem: V300490 1200 V 315 A 149000 A²s REQUEST QUOTE
PC70UD11C350TFItem: W300491 1100 V 350 A 180000 A²s REQUEST QUOTE
PC70UD11C400TFItem: E300867 1100 V 400 A 254000 A²s REQUEST QUOTE
PC70UD11C450TFItem: H301284 1100 V 450 A 405000 A²s REQUEST QUOTE
PC70UD10C500TFItem: J301285 1000 V 500 A 483000 A²s REQUEST QUOTE

→ Continued: TTI, DIN110, and Slotted Blade types

Size 70 Type TTI (5/16in - 18 UNJC)

1100V–1250V AC IEC • 63A to 350A • US Unified Threaded

Catalog Number Voltage (UL) Current (In) Breaking Cap. Action
A130UD70TTI63Item: Q301015 1300 V 63 A 200 kA REQUEST QUOTE
A130UD70TTI80Item: R301016 1300 V 80 A 200 kA REQUEST QUOTE
A130UD70TTI100Item: S301017 1300 V 100 A 200 kA REQUEST QUOTE
A130UD70TTI125Item: T301018 1300 V 125 A 200 kA REQUEST QUOTE
A130UD70TTI160Item: V301019 1300 V 160 A 200 kA REQUEST QUOTE
A130UD70TTI200Item: W301020 1300 V 200 A 200 kA REQUEST QUOTE
A130UD70TTI250Item: X301021 1300 V 250 A 150 kA REQUEST QUOTE
A130UD70TTI280Item: Y301022 1300 V 280 A 150 kA REQUEST QUOTE
A130UD70TTI315Item: Z301023 1300 V 315 A 150 kA REQUEST QUOTE
A120UD70TTI350Item: A301024 1200 V 350 A 150 kA REQUEST QUOTE

Size 70 Type DIN110 Blades

1100V–1250V AC IEC • 63A to 350A • DIN Standard Mounting

Catalog Number Voltage (IEC) Current (In) Weight Action
PC70UD13C63D1AItem: V300536 1250 V 63 A 0.36 kg REQUEST QUOTE
PC70UD13C80D1AItem: W300537 1250 V 80 A 0.36 kg REQUEST QUOTE
PC70UD13C100D1AItem: X300538 1250 V 100 A 0.36 kg REQUEST QUOTE
PC70UD13C125D1AItem: Y300539 1250 V 125 A 0.36 kg REQUEST QUOTE
PC70UD13C160D1AItem: Z300540 1250 V 160 A 0.36 kg REQUEST QUOTE
PC70UD13C200D1AItem: A300541 1250 V 200 A 0.36 kg REQUEST QUOTE
PC70UD13C250D1AItem: B300542 1250 V 250 A 0.36 kg REQUEST QUOTE
PC70UD12C280D1AItem: J300710 1200 V 280 A 0.36 kg REQUEST QUOTE
PC70UD12C315D1AItem: C300543 1200 V 315 A 0.36 kg REQUEST QUOTE
PC70UD11C350D1AItem: D300544 1100 V 350 A 0.36 kg REQUEST QUOTE

→ Continued: LI, EF, and PA Plain Blade types

Size 70 Type EF Notched & PA Plain Blades

1100V–1250V AC IEC • 50A to 350A • Specialty Power Mounting

Catalog Number Voltage (IEC) Current (In) Type Action
PC70UD13C63EFItem: P300600 1250 V 63 A Notched Blade REQUEST QUOTE
PC70UD13C350EFItem: Y300608 1100 V 350 A Notched Blade REQUEST QUOTE
PC70UD13C50PAItem: J301423 1250 V 50 A Plain Blade REQUEST QUOTE
PC70UD13C200PAItem: Z300839 1250 V 200 A Plain Blade REQUEST QUOTE
Standard: IEC 60269-4, VDE 636-23  |  Rating: 100kA to 200kA IR  |  Class / Category: aR Semiconductor Protection

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