Complete Klein Tools ET450 circuit tracer kit with transmitter, receiver, test leads, plug adapter, batteries, and hard case for organized transport.
Klein Tools ET450 transmitter and receiver with voltage indicators and digital display showing signal strength, NCV button, and control arrows.
Back view of two Klein Tools devices with battery compartments and certification labels, designed for rugged use in electrical testing environments.
Two views of Klein Tools handheld tester showing input ports labeled “COM” and voltage symbols, and a sensor screen for electrical diagnostics.
Klein Tools ET450 transmitter and receiver shown with voltage indicators, NCV detection, flashlight, and sensitivity level display for circuit tracing
Promotional image showing Klein Tools circuit tracer used on electrical panel, wall, grass, and concrete, highlighting versatility across environments.
Person using Klein Tools digital tester on a circuit breaker panel, with screen showing “85”, “Level 3”, and “NCV” for voltage and signal strength.
Technician using Klein Tools electrical tester outdoors near an open electrical panel, with protective gear and carrying case visible on grassy surface.
Person using handheld Klein Tools device to measure a cylindrical concrete structure, with screen displaying “20 mm” for depth or thickness reading.
Advanced Circuit Tracer Kit (ET450) promotional video
ET450 Instructional how to videos
Complete Klein Tools ET450 circuit tracer kit with transmitter, receiver, test leads, plug adapter, batteries, and hard case for organized transport.
Klein Tools ET450 transmitter and receiver with voltage indicators and digital display showing signal strength, NCV button, and control arrows.
Back view of two Klein Tools devices with battery compartments and certification labels, designed for rugged use in electrical testing environments.
Two views of Klein Tools handheld tester showing input ports labeled “COM” and voltage symbols, and a sensor screen for electrical diagnostics.
Klein Tools ET450 transmitter and receiver shown with voltage indicators, NCV detection, flashlight, and sensitivity level display for circuit tracing
Promotional image showing Klein Tools circuit tracer used on electrical panel, wall, grass, and concrete, highlighting versatility across environments.
Person using Klein Tools digital tester on a circuit breaker panel, with screen showing “85”, “Level 3”, and “NCV” for voltage and signal strength.
Technician using Klein Tools electrical tester outdoors near an open electrical panel, with protective gear and carrying case visible on grassy surface.
Person using handheld Klein Tools device to measure a cylindrical concrete structure, with screen displaying “20 mm” for depth or thickness reading.
Advanced Circuit Tracer Kit (ET450) promotional video
ET450 Instructional how to videos
KLEIN TOOLS

Klein Tools Circuit Tracer Kit ET450 12V To 480V Advanced Wire Finder (12V to 480V, IP42, 6 ft Drop Protection, Electricians, Tracing Breakers)

In stock
SKU: ET450
$299.99 USD

Description

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Klein Tools ET450 Advanced Circuit Tracer Kit

The Klein Tools ET450 advanced circuit tracer kit delivers professional signal tracing for both energized and non-energized breakers, fuses, wires, conduit, and underground pipes. Engineered for electricians and contractors, it features adjustable receiver sensitivity, a digital LCD display with backlight indicators, and a wide voltage detection range from 12V to 480V. Built for tough jobsite environments, this kit provides precise wire mapping through drywall, cement block, and underground surfaces.

Best Used For:

  • Electrical Panel Tracing: Accurately identifying specific circuit breakers and fuses linked to live or dead lines in commercial panels.
  • Underground Wire Routing: Tracing hidden conduits, pipes, and buried lines beneath soil or concrete slabs.
  • Wall Cavity Troubleshooting: Pinpointing wire paths and bundles hidden behind drywall, plaster, or insulation.

Key Performance & Safety Features

  • Advanced Signal Detection: Trace energized and non-energized breakers, fuses, wires, conduit, and pipes.
  • Adjustable Sensitivity: Fine-tune receiver response for accurate tracing through walls and underground.
  • Audible and Visual Feedback: LCD display with backlight and beeping tone indicate signal strength.
  • NCV Function: Detects live wires without direct contact for added safety.
  • Wide Voltage Range: Transmitter detects AC/DC voltages from 12V to 480V.
  • Durable Construction: Drop-tested to 6 feet and rated IP42 for jobsite reliability.

What's Included

  • (1) Transmitter
  • (1) Receiver with LCD Display and Flashlight
  • (1) Blade Prong
  • (1) Ground Prong
  • (2) Alligator Clips
  • (1) 3-Foot Lead Adapter
  • (1) 20-Foot Lead Adapter
  • (1) AC Plug Lead
  • (1) Instruction Manual
  • (10) AA Alkaline Batteries (6 for Transmitter, 4 for Receiver)
  • (1) Hard Carrying Case

Technical Specifications

Type Circuit Tracer
Application Trace Breakers, Fuses, Wires (Energized/Non-Energized)
Voltage Range 12V, 48V, 120V, 240V, 480V
Frequency Transmitter: AC 45Hz/65Hz; Receiver: 33kHz
Battery Type AA Alkaline (Included)
Battery Life Up to 24 Hours
Drop Protection 6 ft (2 m)
Ingress Protection IP42
Display LCD with Backlight

Pro-Tip: Always ensure a proper earth ground connection when tracing non-energized lines to maximize signal clarity and receiver detection accuracy.