Ferraz Shawmut A4BY600 600 Amp 600 Volt Class L Time Delay Fuse
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Manufacturer Mersen
Mfg Catalog # A4BY600
Crawford Part # 113996


  • Unique dimensions prevent replacement by other fuse classes
  • Blade-stamped catalog numbers for permanent identification
  • Glass melamine body and plated terminals provide superior reliability in harsh environments


  • Mains
  • Feeders
  • Circuit Breakers
  • Load centers
  • Panelboards
  • Switchboards
  • Metering Centers


  • Sell Pack Height: 8.81 in
  • Product Weight: 2.75 lb
  • Product Diameter: 2 in
  • Product Length: 8.63 in
  • Mounting: Bolted
  • Ampere Rating: 600 A
  • AC Max I.R./Breaking Capacity: I1: 200 kA
  • Sell Pack Weight: 2.89 lb
  • Sell Pack Width: 2.12 in
  • Sell Pack Length: 2.12 in
  • Body/Insulating Material: GMG
  • Connection/Terminal Type: Blade
  • Sell Pack Quantity: 1 Each
  • Speed/Characteristic: Time Delay
  • Fuse Class: Class L
  • Connection/Terminal Material: Silver-Plated Copper
  • Rated voltage AC UL: 600 V
  • Rated voltage DC UL: 300 V

Approvals & Standards

  • Mersen Self-Certification, UL Listed to Standard 248-10, File E2137
  • CSA Certified to Standard C22.2, No. 248.10 IEC 269-2-1
  • DC Tested to UL 248 limits (Mersen Self-Certified)
  • Approvals & Standards


UPC 78200193906
Product Description Amp-Trap A4BY fuses have been the industry's favorite when it comes to protecting service entrance equipment, feeder circuits, and circuit breakers. The A4BY is a 100percent rated device and may be applied at continuous currents up to its ampere rating. A 4-second minimum time delay at 500percent rating allows the A4BY to pass normal current surges and to coordinate with ground fault relays.
MDM Pkg GTiN 00782001939069
Length 8.63 in
Type Time-Delay
Diameter 2 in
Terminal Type Blade
Applications For Mains, Feeders, Circuit Breakers, Load Centers, Panelboards, Switchboards, Metering Centers
Mounting Type Bolt-On
Weight 2.75 lb
Pkg Qty 1
Family Brand Name Ferraz Shawmut
Class L
Insulation Material GMG
Construction Glass Melamine
Tc Connection Blade
Amperage 600 Amp
Interrupt Rating 200 kA
Terminal Material Silver-Plated Copper
Rated Voltage AC 600 V
Rated Voltage DC 300 V
Fuse Class Class L

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