We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Yellow plastic transmitter and receiver kit in hard case with adapters and leads

Klein Tools ET310KIT AC Circuit Breaker Finder Kit

SKU CH-9H8Q-NNBFN

Locates the correct breaker on 90-120V AC circuits with visual and audible alerts, includes a GFCI tester, light socket adapter, grounding adapter and alligator clip adapter in a case

  • FeaturesCircuit Breaker Finder Kit, Catii 120v, Battery Powered, tru
  • Height10.96 L x 2.17 W x 1.41 H inches
  • Width10.96 L x 2.17 W x 1.41 H inches
  • Length10.96 L x 2.17 W x 1.41 H inches
  • Weight0.56 kilograms
  • Sports Team1 Piece
  • Accurate breaker identification on 90-120V AC circuits
  • Visual and audible cues confirm the correct breaker
  • Built-in GFCI tester checks wiring and device safety
  • Light socket and grounding adapters expand fixture testing
  • Alligator clip adapter enables bare-wire circuit tracing

Circuit Breaker Finder Kit

The Klein Tools ET310KIT locates the correct breaker for outlets or fixtures on 90-120V AC circuits. It combines a transmitter, a receiver and multiple adapters in a single case for professional electrical troubleshooting.

Bundled Adapters and Tester

A built-in GFCI outlet tester on the transmitter checks wiring conditions and GFCI devices. The light socket adapter connects to fixtures, the 3-prong to 2-prong grounding adapter fits older outlets, and the alligator clip adapter enables testing on bare wires.

90-120V AC Circuit Limit

The kit operates only on 90-120V AC circuits and cannot identify breakers on higher-voltage or DC systems. It requires a live circuit to trace and does not function on de-energised wiring or panels without an active load.

Highlights

  • Accurate breaker identification on 90-120V AC circuits
  • Visual and audible cues confirm the correct breaker
  • Built-in GFCI tester checks wiring and device safety
  • Light socket and grounding adapters expand fixture testing
  • Alligator clip adapter enables bare-wire circuit tracing

Specifications

BrandKLEIN TOOLS, Klein Tools
FeaturesCircuit Breaker Finder Kit, Catii 120v, Battery Powered, true
Height10.96 L x 2.17 W x 1.41 H inches
Width10.96 L x 2.17 W x 1.41 H inches
Length10.96 L x 2.17 W x 1.41 H inches
Weight0.56 kilograms
Sports Team1 Piece

Questions about this item

What battery does the transmitter use and how often will it need replacing?

The transmitter runs on a standard 9 V battery; typical use gives several months before a fresh cell is needed.

What voltage range limits the breaker-finding function?

The kit only identifies breakers on 90-120 V AC circuits; outside that range the transmitter will not couple a detectable signal.

How warm does the receiver get during a full day of scanning panels?

The receiver stays near room temperature; its low-current circuitry produces no noticeable heat even with continuous operation.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.