Amprobe AT-4003-A Advanced Wire Tracer

The AT-4000 Wire Tracer Series has been recalled.Learn more
  • Locates and traces energized and de-energized wires in walls, floors, plastic conduit, cable shields and computer cables, without interrupting power
  • Includes one universal transmitter that automatically switches to work with either energized or de-energized systems
  • Receiver is not position-sensitive so it doesn’t require rotation for accurate readings
  • Pinpoints shorts, breakers, neutrals, broken wires, and ground lines
  • Does not interfere with sensitive electronic equipment, such as in hospitals and data centers
  • Offers precise sensitivity adjustment


This wire tracer has all the features of the AT-4001-A plus the extra protection of a hard shell carrying case.

Use this electrical wire tracer for finding wires in walls, tracing energized wires and locating breakers without interrupting power. Our best wire tracer, you can use it to find energized and de-energized wires, including broken and disconnected wires, and pinpoint shorts and ground faults.


FEATURE AT-4001-A AT-4003-A AT-4004-A AT-4005-A
Traces energized wires without power interruption. Locates breakers without power interruption.
Traces unenergized wires (wire continuity and wire grounded at the end). Pinpoints shorts and ground faults.
Traces unenergized open wires (broken or disconnected wire). Pinpoints place where wire is broken.
Supplied with clamp-on attachment to inject signal without making contact with bare wire.
Supplied with battery booster to strengthen signal for open tracing.
KIT CONTAINS: AT-4001-A AT-4003-A AT-4004-A AT-4005-A
Carrying case Soft SV-1000 Hard CC-AT-4000 Hard CC-AT-4000 Hard CC-AT-4000
Receiver R-4000
Transmitter T-4000-A
110V Pigtail – banana plug cord set C2901
Alligator clip – banana plug cord set C2902
Grounding test lead 25-ft. MTL-G
Alligator clip for ground lead VRC-320
Clamp-on transmitter accessory A2202
Rechargeable battery pack B2024
Battery pack recharger B2025
Users manual
Transmitter operating voltage: 9-300V AC/DC
Operating frequency: 32.786kHz
Receiver short mode range: 20′ in air from the traced wire under test conditions
Receiver open mode range: 12′ in air from the traced wire under test conditions


What’s Included

  • R-4000 Receiver
  • T-4000-A Transmitter
  • C2901 110 V Pigtail Banana plug cord set
  • C2902 Alligator clips banana plug cord set
  • MTL-G Grounding test lead 25 ft
  • VRC-320 Alligator clip for ground lead
  • CC-AT-4000 Hard carrying case
  • Batteries


Datasheet »
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