

Extech 380462 Precision Milliohm Meter (220 V)
The Extech 380462 is a bench/portable precision milliohm meter powered by 220 VAC. It is optimized for low-resistance measurements using a true 4-wire (Kelvin) method and supports five selectable resistance ranges. With its 0.7-inch (18 mm) LCD display and manual zero adjust, it’s suitable for field or lab use in measuring transformer windings, coils, contacts, and PCB traces.
Description
The Extech 380462 represents the 220 VAC version of Extech’s Precision Milliohm Meter series. It’s built to measure small resistances with confidence by employing a 4-terminal Kelvin connection, which effectively eliminates errors from lead and contact resistance. The meter offers five selectable measurement ranges (200 mΩ, 2 Ω, 20 Ω, 200 Ω, and 2000 Ω) with resolutions from 0.1 mΩ up to 1 Ω depending on range. The instrument includes a manual zero adjustment to null out residual resistance and an overrange indication to alert the user when readings exceed the selected range. The large 1999-count LCD aids in readability during testing. The unit comes with 4-wire Kelvin clip leads and is built into a durable housing for field service applications.
Features
- True 4-Wire Kelvin Measurement — Eliminates lead/contact resistance errors
- Five Measurement Ranges — 200 mΩ, 2 Ω, 20 Ω, 200 Ω, and 2000 Ω
- Resolution Range — e.g. 0.1 mΩ in lowest range to 1 Ω in highest
- Manual Zero Adjust — Allows offset correction to zero baseline
- Overrange Indication — Alerts when measurement exceeds the range
- Large LCD Display — 0.7 in (18 mm) with 1999 count resolution
- 220 VAC Powered — Designed for use with 220 V mains (50 Hz)
- Portable & Durable Construction — Rugged field design with included protective cover
- Accessories Included — Supplied with 4-wire Kelvin clip test leads
Includes
- 4-wire cables
- Kelvin clip connectors

