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Manufacturer Mersen
Mfg Catalog # A50QS125-4IL
North Coast Part # 603167


  • Lowest I2t for greatest protection of semiconductor circuits
  • Low watts loss for cooler operation
  • Superior cycling ability gives an equipment design advantage
  • State-of-the-art protection for 500V equipment
  • Ultra compact sizes allow down-sizing of existing equipment


  • Protection of 500V or less motor drives, UPS, inverters, etc.


  • Sell Pack Height: 3.31 in
  • Product Weight: 0.47 lb
  • Product Diameter: 1.22 in
  • Product Length: 3.63 in
  • Mounting: Bolted
  • Ampere Rating: 125 A
  • AC Max I.R./Breaking Capacity: I1: 50 kA
  • ROHS Compliant: Yes
  • Sell Pack Weight: 2.47 lb
  • Indication System: Yes
  • Sell Pack Width: 5.19 in
  • Sell Pack Length: 13.5 in
  • Body/Insulating Material: GMG
  • Connection/Terminal Type: Blade
  • Sell Pack Quantity: 5 Each
  • Indication System Type: IL Indicator
  • Speed/Characteristic: High Speed
  • Connection/Terminal Material: Tin-Plated Brass
  • Rated voltage AC UL: 500 V
  • Rated voltage DC UL: 500 V

Approvals & Standards

  • UL recognized component UL File 60314
  • AC: UL guide no. JFHR2
  • DC Tested to UL standard 198L parameters (70-1200A)
  • CSA Certified LR12636
  • Approvals & Standards



UPC 78200130507
Family Brand Name Ferraz Shawmut
GTiN 00782001305079
Length 3.63 in
Type North American Round Style
Diameter 1.22 in
Terminal Type Blade
Applications Protection of 500V or less motor drives, UPS, inverters, etc.
Mounting Type Bolted
Weight 0.47 lb
Pkg Qty 5
Insulation Material GMG
TC Connection Blade
Amperage 125 Amp
Indicator IL Indicator
Terminal Material Tin-Plated Brass
Rated Voltage AC 500 V
Rated Voltage DC 500 V
Voltage null

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