Extech PRT200 Non-Contact Phase Sequence Tester

The Extech PRT200 offers a reliable and efficient solution for checking three‑phase wiring and motor installation sequence without requiring contact with live conductors. By utilising a non‑contact detection technique, the tool allows you to clip onto insulated conductors rather than having to attach to exposed live parts. It supports voltages from 75 up to 1,000 VAC and frequencies from 45 to 65 Hz, covering the majority of industrial installations. The device features LED indicators to show each phase is live and to display whether the phase rotation is clockwise (correct) or counter‑clockwise (reversed). An audible beeper sounds intermittently when the sequence is correct and continuously when it is reversed — helping alert you to potential wiring issues immediately. Designed for field conditions, the PRT200 includes a robust housing, a back‑cover magnet so you can stick it on a panel for hands‑free use, and a Hi/Lo brightness switch on the LEDs for bright or dim lighting environments. It also comes with three built‑in 30‑inch test leads with large colour‑coded alligator clips, low‑battery warning, and is supplied with four AA batteries and a pouch case. Safety rated to CAT IV‑600 V, the PRT200 is a workhorse tool for electrical contractors, maintenance technicians, and installation engineers who need fast and safe phase checking on three‑phase systems.

Features

• Supports input voltages from 75 to 1,000 VAC, which covers most three‑phase systems.

• Operates across a frequency range of 45 to 65 Hz.

• LED indicators show phase orientation (clockwise vs counter‑clockwise) and whether each phase is live.

• Audible beeper: intermittent tone for correct rotation, continuous tone for reversed rotation — provides immediate feedback.

• Durable housing with a magnet on the back cover so the unit can attach to a distribution panel allowing hands‑free operation.

• Adjustable Hi/Lo LED brightness switch for making measurements in bright sunlight or low‑light conditions.

• Fully insulated alligator clips with wide jaws for safe and reliable grip.

• Low battery warning – helps avoid false readings due to depleted power.

• Safety rating CAT IV‑600 V (ensuring safe use on distribution panels, feeders, etc).

• Supplied with three built‑in 30‑inch test leads (colour coded), four AA batteries and a pouch case for storage/transport.

Includes

• Three built-in 30 in
• Test leads with large color-coded alligator clips
• 4 AA batteries
• Pouch case