Klein Tools Advanced Circuit T...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$447.19
$334.81
Klein Tools Advanced Circuit Tracer Kit

Klein Tools Advanced Circuit Tracer Kit Professional Wire Tracing System with Transmitter Receiver LCD Display Hard Case

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Model: ET450
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$447.19
$334.81
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Klein Tools Advanced Circuit Tracer Kit Professional Wire Tracing System

Professional-Grade Circuit Tracing Equipment with Transmitter and Receiver

The Klein Tools Advanced Circuit Tracer Kit delivers professional-grade circuit tracing performance for electrical troubleshooting and wire identification. This comprehensive electronic testing system features advanced transmitter and receiver technology designed for electricians, linemen, and electrical professionals, providing the reliable performance and industry-leading quality that tradesmen demand from America's most trusted tool manufacturer.

Professional Features & Benefits

Advanced Detection Technology

  • Dual-Unit System - Transmitter and receiver work together for precise wire tracing through walls, conduit, and underground installations
  • Multi-Voltage Detection - External voltage indicators for 12V, 48V, 120V, 240V, and 480V provide comprehensive electrical system compatibility
  • Adjustable Sensitivity - Variable receiver sensitivity detects transmitted signals through drywall, cement block, and underground applications
  • Frequency Optimization - 33kHz receiver frequency with AC 45Hz to 65Hz transmitter range ensures reliable signal transmission

Professional Safety and Durability

  • CAT III 600V Safety Rating - Professional electrical safety standards with IP42 ingress protection for reliable field performance
  • Drop Protection Design - 6-foot drop protection ensures Klein Tools durability in demanding work environments
  • Non-Contact Voltage Testing - Integrated NCV function on receiver provides additional safety verification for energized circuits

Enhanced Usability Features

  • LCD Display with Backlight - Clear visual indication of signal strength with audible beep confirmation for low-light working conditions
  • Integrated Flashlight - Built-in illumination on receiver for enhanced visibility in electrical panels and confined spaces
  • Extended Battery Life - Up to 24-hour operation with AA alkaline batteries ensures full-day professional use

Technical Specifications

Overall dimensions: Receiver 7.05" × 3.90" × 1.84", Transmitter 8.72" × 2.07" × 1.51". Total kit weight: 6.28 lbs. Power requirements: Transmitter uses 6 × 1.5V AA alkaline batteries, Receiver uses 4 × 1.5V AA alkaline batteries. Operating frequency: Transmitter AC 45Hz to 65Hz, Receiver 33kHz. Safety rating: CAT III 600V with IP42 ingress protection and 6-foot drop protection. Lead lengths: 3-foot and 20-foot adapters included. Construction: ABS and electronic components with professional-grade durability.

Installation & Usage

  1. Connect transmitter to circuit using appropriate leads (blade prongs, alligator clips, or AC plug leads) ensuring proper electrical safety procedures
  2. Select appropriate voltage setting on transmitter based on circuit voltage (12V, 48V, 120V, 240V, or 480V)
  3. Activate transmitter signal and verify proper operation using built-in voltage indicators
  4. Use receiver with adjustable sensitivity to trace signal path through walls, conduit, or underground installations
  5. Follow audible beep and LCD display indicators to identify exact wire location and routing
  6. Utilize NCV function and flashlight features for additional safety verification and enhanced visibility during tracing operations

Professional Applications

Ideal for:

  • Electrical Installation - Tracing new wire runs through walls, conduit systems, and underground installations for residential and commercial projects
  • Troubleshooting and Repair - Identifying specific circuits, breakers, and fuses in complex electrical panels and distribution systems
  • Telecommunications Work - Locating communication cables, data lines, and low-voltage wiring in commercial and industrial facilities
  • Industrial Maintenance - Tracing control wiring, motor circuits, and instrumentation cables in manufacturing and processing facilities
  • Residential Electrical - Identifying household circuits, outlet connections, and switch wiring for renovation and repair projects
  • Commercial Electrical - Mapping electrical systems in office buildings, retail spaces, and institutional facilities
  • Utility and Lineman Work - Tracing underground cables, service connections, and distribution lines for power companies
  • HVAC Applications - Locating control wiring, thermostat connections, and equipment circuits in heating and cooling systems

Advanced Circuit Tracing Advantage

Klein Tools engineering delivers superior circuit tracing capability through precision electronic design, multi-voltage compatibility, and professional-grade construction. The advanced transmitter-receiver system provides reliable signal transmission through various building materials while maintaining safety standards required for electrical work. Adjustable sensitivity and multiple connection options ensure versatility across diverse electrical applications.

Why Choose Klein Tools Quality?

Since 1857, Klein Tools has maintained America's legacy of excellence in electrical tool manufacturing, combining innovative electronic testing technology with rigorous safety standards and professional reliability. This Advanced Circuit Tracer Kit represents Klein's commitment to providing electricians and electrical professionals with precision instruments that meet the demanding requirements of modern electrical work, backed by comprehensive testing protocols and trusted performance in the field.



KLN-ET450 - spec sheet

Manufacturer Resources

Product Specs

Application:
Trace Energized and Non-Energized Breakers, Fuses, and Wires
Batteries:
Transmitter - 6 × 1.5V AA Alkaline; Receiver - 4 × 1.5V AA Alkaline
Battery Life:
Up to 24 hr
Case Included:
Yes
Control Type:
Transmitter and Receiver
Display:
Receiver - LCD with Backlight
Drop Protection:
6' (2 m)
Frequency:
Transmitter - AC 45Hz to 65Hz; Receiver - 33kHz
Included:
Transmitter, Receiver, Blade and Ground Prongs, Alligator Clips, 3' and 20' Lead Adapters, AC Plug Leads, Instructions, All Required Batteries, and Hard Carrying Case
Ingress Protection:
IP42
Integral Lead Storage:
No
Interchangeable Leads:
Yes
Lead Length:
3' (1 m) and 20' (6.1 m)
Overall Height:
Receiver - 1.84" (4.5 cm); Transmitter - 1.51" (3.9 cm)
Overall Length:
Receiver - 7.05" (17.9 cm); Transmitter - 8.72" (22.2 cm)
Overall Width:
Receiver - 3.90" (9.9 cm); Transmitter - 2.07" (5.3 cm)
Pollution Degree:
2
Standard:
CAT III 600V
Tests Continuity:
No
Product Type:
Circuit Tracer
Department:
Electrical
Product Group:
Test & Measurement
Product Subgroup:
Electrical Testers
Product Voltage:
External Indicators for 12V, 48V, 120V, 240V, and 480V
Product Details:
Circuit Tracer
Product Height:
4.0000 in
Product Material:
ABS and Electronic Components
Product Category:
Circuit Tracers
Product Weight:
6.2800 lbs
Product Width:
12.7500 in
Product Depth:
16.1200 in

Klein Tools ET450 – Frequently Asked Questions

1) Can the Klein ET450 circuit tracer be used on live circuits, or does the power have to be off?
Both. The ET450 traces energized and non-energized breakers, fuses, and wires, so you can identify a live branch circuit at the panel without killing power, or trace dead wire runs before they are terminated. It carries a CAT III 600V rating at pollution degree 2, which covers panel and distribution work at typical commercial service levels.
2) What voltages will the Klein ET450 transmitter work on?
The transmitter has external voltage indicators for 12V, 48V, 120V, 240V and 480V, so it covers low-voltage control and thermostat wiring, standard 120/240V branch circuits, and 480V three-phase gear. Pick the setting that matches the circuit before you energize the signal.
3) What comes in the Klein ET450 circuit tracer kit, or do I need to buy leads separately?
The kit is complete out of the box: transmitter, receiver, blade and ground prongs, alligator clips, 3-foot and 20-foot lead adapters, AC plug leads, instructions, all required batteries, and a hard carrying case. The leads are interchangeable, so you can swap between plug leads for a receptacle and clips for a bare conductor. There is no integral lead storage on the units themselves, so leads ride in the case.
4) Will the ET450 receiver pick up a signal through drywall or a concrete slab?
The receiver runs at 33kHz with adjustable sensitivity, which is how you work through drywall, cement block, conduit, and buried runs: start low to narrow in, raise it when the signal is buried deeper. The transmitter operates on AC at 45Hz to 65Hz. Signal strength shows on a backlit LCD with an audible beep, so you can follow it by ear in a crawl space.
5) How far can I get from the panel with the ET450 transmitter connected?
Lead reach is 3 feet (1 m) and 20 feet (6.1 m) with the two supplied adapters. The 20-foot lead is what lets you clip on at a receptacle or junction and still set the transmitter somewhere safe while you walk the run with the receiver.
6) Do I need batteries for the Klein ET450, and how long do they last?
All required batteries ship with the kit. The transmitter takes 6 AA alkaline cells at 1.5V and the receiver takes 4, for 10 total, and runtime is up to 24 hours, enough for a full day of panel work without carrying spares.
7) Is the ET450 tough enough for daily service truck use and damp job sites?
It is rated IP42, which means protection against solid objects and dripping water, not washdown or submersion, so keep it out of standing water and heavy rain. The units survive a 6-foot (2 m) drop and the housing is ABS. They travel in a hard carrying case, and the whole kit weighs 6.28 lbs.
8) Can I use the Klein ET450 as a continuity tester too?
No. The ET450 does not test continuity. It is a two-piece tracer for locating and identifying conductors, breakers and fuses. Keep a separate multimeter or continuity tester on the truck for ringing out a circuit.
9) Can the ET450 trace low-voltage thermostat and data cable, or is it only for power circuits?
It handles both. With the 12V and 48V settings and alligator clips you can put a signal on thermostat wire, control wiring, and low-voltage communication runs, then trace them through walls and ceilings with the receiver. The same kit steps up to 480V gear for motor and panel work.
10) Will the ET450 receiver tell me if a wire is live before I touch it?
The receiver has a built-in non-contact voltage function, so you can check an energized conductor as a safety verification while tracing. There is also an integrated flashlight on the receiver for looking into panels and confined spaces.
11) How big is the Klein ET450 kit, and will it fit in a van drawer?
The receiver measures 7.05 x 3.90 x 1.84 inches and the transmitter 8.72 x 2.07 x 1.51 inches. Packed in its hard case, the kit measures 16.12 x 12.75 x 4.00 inches and weighs 6.28 lbs, so plan drawer space around the case, not the instruments.
12) What is the exact model and part number for the Klein advanced circuit tracer kit?
It is Klein Tools ET450, sold as a single kit configuration with the transmitter, receiver, leads and hard case together. Order by ET450; there are no finish or size variations to specify.
How fast can I get the Klein Tools ET450 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools ET450 come with a warranty?
Absolutely. The Klein Tools ET450 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools ET450?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools ET450 from ZenSupply?
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