The Extech 480400 3-Phase Rotation Tester is a rugged handheld meter designed for testing the phase orientation of three-phase power sources. The durable double-molded housing in Extech's signature orange and green colors provides excellent protection for field use, and the unit comes complete with three wide-jawed color-coded alligator clip cables .

With a voltage range of 40 to 690V AC and frequency range of 15 to 400 Hz, the 480400 is suitable for a wide variety of commercial and industrial applications. The large multi-line LCD display is easy to read and clearly indicates phase orientation (clockwise or counter-clockwise) as well as whether each of the three phases is live or de-energized .

The tester draws power directly from the source being measured, so no batteries are required—eliminating the worry of dead batteries when you need to test. This makes it particularly reliable for field use where immediate testing is required. The unit has a CAT III-600V safety rating and CE certification .

Applications include verifying correct phase rotation before connecting motors, pumps, and other rotating machinery; checking generator phase rotation direction; and identifying incorrect phase wiring in electrical installations. The kit includes three color-coded test leads with alligator clips and a pouch case for storage .