FERRAZ N300507 12.5URD73TTF0500
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Manufacturer Mersen
Mfg Catalog # N300507
North Coast Part # 665660


  • 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


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

Approvals & Standards

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


  • Rated voltage AC UL: 1300 V
  • Rated voltage AC IEC: 1250 V
  • Ampere Rating: 500 A
  • Speed/Characteristic: aR
  • Fuse Size: 73
  • Mounting: Bolted
  • Clearing I2t At Rated Voltage: 360 kA²s
  • Melting I2t: 44 kA²s
  • AC Max I.R./Breaking Capacity: I1: 126 kA
  • Power Dissipation at Rated Current Value: 112 W
  • Indication System: Yes
  • Indication System Type: Striker
  • Connection/Terminal Material: Silver-Plated Brass
  • Connection/Terminal Type: End Contact with Threaded Holes
  • Body/Insulating Material: Ceramic

Product Dimensions

  • Product Weight: 2.69 lb
  • Product Width: 2.87 in
  • Product Length: 2.91 in
  • Product Height: 3.09 in

Packaging Dimensions

  • Sell Pack Quantity: 1 EACH
  • Sell Pack Weight: 2.69 lb
  • Sell Pack Width: 4.33 in
  • Sell Pack Length: 4.92 in
  • Sell Pack Height: 2.95 in


UPC 78200124249
Family Brand Name Ferraz Shawmut
GTiN 03605340329506
Length 2.91 in
Width 2.87 in
Terminal Type End Contact With Threaded Holes
Mounting Type Bolted
Height 3.09 in
Weight 2.69 lb
Pkg Qty 1
Insulation Material Ceramic
Amperage 500 Amp
Indicator Striker
Terminal Material Silver-Plated Brass
Rated Voltage AC 1300 V

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