Klein Tools ET450 Advanced Circuit Tracer Kit
The Klein Tools ET450 Advanced Circuit Tracer Kit is a professional-grade solution for tracing
energized and non-energized breakers, fuses, and wiring with speed and accuracy.
Designed for electricians and service professionals, the ET450 allows reliable circuit identification
through drywall, cement block, and underground installations.
When the transmitter is connected to a circuit, the receiver detects the signal with adjustable sensitivity,
helping you locate breakers and wires without guesswork. Built-in flashlight and non-contact voltage (NCV)
detection enhance usability in low-light panels and active environments.
What This Product Is
A complete circuit tracing kit for identifying electrical circuits safely and efficiently in residential,
commercial, and industrial settings.
Key Use Cases
- Tracing breakers in energized panels
- Identifying non-energized circuits and wiring paths
- Locating fuses and wires behind walls or underground
- Troubleshooting electrical systems without disconnecting power
Included in the Kit
- Transmitter
- Receiver with LCD backlit display
- Blade and ground prongs
- Alligator clips
- 3 ft (1 m) lead adapter
- 20 ft (6.1 m) lead adapter
- AC plug leads
- All required batteries
- Hard carrying case with handle
Product Specifications
| Type |
Circuit Tracer |
| Application |
Trace energized and non-energized breakers, fuses, and wires |
| Voltage Indicators |
12V, 48V, 120V, 240V, 480V |
| Frequency |
Transmitter: 45–65 Hz AC; Receiver: 33 kHz |
| Display |
LCD with backlight (receiver) |
| Special Features |
NCV function, built-in flashlight, adjustable sensitivity |
| Ingress Protection |
IP42 |
| Safety Rating |
CAT III 600V |
| Drop Protection |
6 ft (2 m) |
| Battery Type |
AA Alkaline |
| Battery Life |
Up to 24 hours |
| Receiver Dimensions |
7.05" L × 3.90" W × 1.84" H |
| Transmitter Dimensions |
8.72" L × 2.07" W × 1.51" H |
| Receiver Weight |
11 oz (312 g) |
| Transmitter Weight |
16.5 oz (470 g) |
| Material |
ABS and electronic components |
| Case Included |
Yes – hard carrying case |
Why Electricians Choose the ET450
- Works on live and dead circuits
- Reliable tracing through walls and underground
- No panel guesswork or trial-and-error
- Built for daily professional use