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Approvals & Standards

A4BQ (100-6000)

  • UL listed to standard 248-10 File E2137
  • DC listed to UL standard 248 (100-2000A)
  • CSA certified to standard C22.2 No. 248.10 (601-6000A)
A4BQ (100-6000) - TA
  • UL listed

Key features & benefits

Amp-Trap 2000 A4BQ fuses are 20 percent more current limiting than any other Class L fuse on the market. When correctly coordinated, they bring a superior level of protection to service entrance equipment. Downstream circuit components have maximum protection against short circuit let-thru current. A4BQ's built-in 4-second time-delay characteristic (at 500percent of rated current) accommodates harmless inrush currents with no nuisance opening.

More specifications


  • Mains
  • Feeders
  • Large motors
  • Lighting, heating & general loads
  • Circuit breaker back-up
  • DC rated: UPS DC links, battery disconnects, other DC applications

Product Specifications

Item Number


Item Description (ERP)

600V 1200A CLASS L TD FUSE W/T  

Short Description

Fuse Amp-Trap 2000® 600V 1200A Time-Delay Class L A4BQ Series TA Indicator  



Rated voltage AC UL

600   V

Rated voltage DC UL

500   V

Ampere Rating

1200   A

ROHS Compliant


Fuse Class

Class L  


Time Delay  



AC Max I.R./Breaking Capacity: I1

200   kA

Indication System


Indication System Type

TA Indicator  

Connection/Terminal Material

Silver-Plated Copper  

Connection/Terminal Type


Body/Insulating Material


Product Weight

4.75   lb

Product Diameter

2.5   in

Product Length

10.75   in

Sell Pack Quantity

1   Each

Sell Pack Weight

4.99   lb

Sell Pack Width

8   in

Sell Pack Length

8.12   in

Sell Pack Height

15.38   in