Mersen A3T20 20 Amp 300 Volt Class T Fast Acting Fuse
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Manufacturer Mersen
Mfg Catalog # A3T20
North Coast Part # 211678


  • Extremely current-limiting for low peak let-thru current
  • Unique dimensions prevent replacement by other fuse classes
  • Blade-stamped catalog numbers for permanent identification
  • Small physical size for greater design flexibility


  • Load centers
  • Panelboards
  • Switchboards
  • Circuit breakers
  • Metering centers

Approvals & Standards

  • UL listed to standard 248-15 File E2137
  • CSA certified to standard C22.2 no. 248.15
  • DC listed to UL standard 248


  • Rated voltage AC UL: 300 V
  • Rated voltage DC UL: 160 V
  • Ampere Rating: 20 A
  • ROHS Compliant: Yes
  • Fuse Class: Class T
  • Speed/Characteristic: Fast-Acting
  • Mounting: Clip
  • AC Max I.R./Breaking Capacity: I1: 200 kA
  • Connection/Terminal Material: Copper
  • Connection/Terminal Type: Ferrule
  • Body/Insulating Material: GMG

Product Dimensions

  • Product Weight: 0.01 lb
  • Product Diameter: 0.41 in
  • Product Length: 0.88 in

Packaging Dimensions

  • Sell Pack Quantity: 10 Each
  • Sell Pack Weight: 0.11 lb
  • Sell Pack Width: 0.9 in
  • Sell Pack Length: 2.09 in
  • Sell Pack Height: 0.9 in


Family Brand Name Ferraz Shawmut
Product UPC 78200189007
GTiN 00782001890070
Length 0.88 Inch
Type North American Power Fuses
Diameter 0.41 in
Terminal Type Ferrule
Applications Load centers Panelboards Switchboards Circuit Breakers Metering Centers
Mounting Type Clip
Weight 0.01 lb
Pkg Qty 10
Class T
Insulation Material GMG
TC Connection Ferrule
Amperage 20 Amp
Interrupt Rating 200 kA
Terminal Material Copper
Rated Voltage AC 300 V
Rated Voltage DC 160 V
Fuse Class Class T
Voltage 300 VAC

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