Ferraz Shawmut A50P125-4 31 x 92.2 mm 125 Amp 500 Volt Semiconductor Protection Fuse
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Manufacturer Mersen
Mfg Catalog # A50P125-4
Crawford Part # 114015


  • Low I2t minimizes damage to protected components on short circuit
  • Controlled arc voltage reduces stress to circuit components during fuse clearing
  • Choice of mounting types helps in equipment design


  • Protection of DC drives, UPS and other equipment of 500 volts or less

Approvals & Standards

  • UL Recognized Component UL File 60314
  • AC: UL Guide No. JFHR2 (10-800A)
  • DC: UL Guide No.JFHR2 (35-800A)


  • Rated voltage AC UL: 500 V
  • Rated voltage DC UL: 450 V
  • Ampere Rating: 125 A
  • Speed/Characteristic: High Speed
  • Mounting: Bolted
  • AC Max I.R./Breaking Capacity: I1: 50 kA
  • Connection/Terminal Material: Tin-Plated Brass
  • Connection/Terminal Type: Blade
  • Body/Insulating Material: GMG

Product Dimensions

  • Product Weight: 0.45 lb
  • Product Diameter: 1.22 in
  • Product Length: 3.63 in

Packaging Dimensions

  • Sell Pack Quantity: 5 Each
  • Sell Pack Weight: 2.36 lb
  • Sell Pack Width: 5.75 in
  • Sell Pack Length: 8 in
  • Sell Pack Height: 1.5 in



UPC 78200194609
Product Description A50P Amp-Trap Form 101 high speed fuses were developed for DC drives, uninterruptable power supplies and similar applications requiring better protection (lower I2t) and superior reliability. The A50P is typically used for replacement.
MDM Pkg GTiN 00782001946098
Length 3.63 in
Type High Speed, Form 101, Fast Acting
Diameter 1.22 in
Terminal Type Blade
Applications For Protection of DC drives, UPS and Other Equipment of 500 V or Less
Mounting Type Bolt-In
Weight 0.45 lb
Pkg Qty 5
Family Brand Name Ferraz Shawmut
Insulation Material GMG
Construction GMG
Contact Material Tin-Plated Brass
Tc Connection Blade
Amperage 125 Amp
Response Time 10 Millisecond
Blade Dimensions 1.22 in dia x 3.63 in L
Interrupt Rating 100 kA
Terminal Material Tin-Plated Brass
Sub Brand Amp-Trap
Rated Voltage AC 500 V
Rated Voltage DC 450 V
Voltage null

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