Extech 380460 Precision Milliohm Meter (110V)

Fits low-resistance checks on bonds, windings, and contact paths that need a portable 4-wire Kelvin milliohm meter with resolution to the 100 µΩ class, five ranges to 2 kΩ, and a rugged field case — the 380460 is the 110 VAC / 60 Hz model (220 V sibling is 380462).

Key advantages

4-wire Kelvin — 4-wire Kelvin milliohm / low resistance; Kelvin clip leads included.
Ranges / resolution — 200 mohm, 2000 mohm, 20 ohm, 200 ohm, 2 kohm; resolution to 100 uohm (0.1 mohm class on lowest range).
Accuracy — +/-(0.75% rdg + 2 to 4 digits) by range; max test voltage ~3.2-3.8 VDC depending on range.
Display / zero — Large 0.7 in (18 mm) LCD, 1999 count; manual zero; overrange indication.
Power / form — 110 VAC 60 Hz (380460) or 220 VAC 50 Hz (380462); 6.3 x 2.8 x 3.4 in (160 x 120 x 85 mm); 1.5 lb (680 g); protective cover.

Typical applications

Bond and contact resistance on bus bars, ground straps, and bolted joints.
Motor/transformer winding and cable splice low-ohm checks in the milliohm–ohm band.
Field service where a compact AC-powered milliohm meter with Kelvin clips is preferred over a micro-ohm DC source.
Incoming inspection of low-value shunts and sense resistors within the 200 mΩ–2 kΩ family.

Selection guide

Line voltage — This SKU is 380460 (110 VAC 60 Hz). Order 380462 when the site is 220 VAC 50 Hz.
Range band — Confirm DUT resistance sits in 200 mohm, 2000 mohm, 20 ohm, 200 ohm, 2 kohm; lowest range is 200 mΩ at 100 µΩ resolution.
Method — 4-wire Kelvin only; use the supplied Kelvin clips (spare set 380465) — 2-wire leads defeat the accuracy class.
Accuracy budget — +/-(0.75% rdg + 2 to 4 digits) by range; zero the display before each range change.
Calibration — Base 380460 vs 380460-NIST when a NIST-traceable certificate is required.

Common mistakes

Ordering 380460 for a 220 VAC site — use 380462 for 220 VAC 50 Hz.
Using ordinary 2-wire DMM leads — OEM accuracy assumes 4-wire Kelvin clips.
Confusing this AC-powered bench/field milliohm meter with battery milliohm models (e.g. 380580 family) — confirm power and range before RFQ.
Expecting micro-ohm welding/bond meters below the 100 µΩ class — lowest listed resolution is 100 µΩ on the 200 mΩ range.

When to RFQ / what to tell us

Confirm 110 VAC (380460) vs 220 VAC (380462) and expected resistance band.
Need for 380460-NIST and/or spare Kelvin lead set (380465).
Quantity, ship-to, and DUT type (bond, winding, shunt) so we can sanity-check range fit.

Request a Quote · Get selection help

Specs

Spec	Value
SKU	25217
Brand	Extech
Model	380460
Product type	milliohmmeter
Product name	Extech 380460 Precision Milliohm Meter (110V)
Measurement Type	4-wire Kelvin milliohm / low resistance
Ranges	200 mohm, 2000 mohm, 20 ohm, 200 ohm, 2 kohm
Resolution	to 100 uohm (0.1 mohm class on lowest range)
Accuracy	+/-(0.75% rdg + 2 to 4 digits) by range
Max Test Voltage	~3.2-3.8 VDC depending on range
Display	Large 0.7 in (18 mm) LCD, 1999 count; manual zero; overrange indication
Power	110 VAC 60 Hz (380460) or 220 VAC 50 Hz (380462)
Dimensions	6.3 x 2.8 x 3.4 in (160 x 120 x 85 mm)
Weight	1.5 lb (680 g)
Form Factor	Portable field milliohm meter with protective cover
Family	Extech 380460/380462

Documents

Extech 380460 / 380462 user manual (PDF)

FAQ

Q: 380460 vs 380462? A: Same milliohm meter family — 380460 is 110 VAC 60 Hz; 380462 is 220 VAC 50 Hz. Pick by site mains.

Q: What ranges and resolution? A: 200 mΩ / 2000 mΩ / 20 Ω / 200 Ω / 2 kΩ; resolution to 100 µΩ on the lowest range, with ±(0.75% rdg + 2–4 digits) by range.

Q: What should I send for a quote? A: Line voltage, expected Ω band, NIST/spare-lead need, quantity, ship-to. Compatible with systems using Extech 380460 — we do not claim authorized-dealer status.