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MS5901 Motor & Phase Rotation Indicator

The MS5901 is a compact and reliable motor and phase rotation indicator designed for testing phase sequence, motor rotation, and ensuring correct electrical installations. Equipped with three test leads, it provides quick and safe verification for electricians, maintenance engineers, and installers working with AC systems.

Key Features

  • Equipped with 3 test leads for easy connection

  • Indicates motor and phase rotation direction

  • Wide operating frequency range: 2–400 Hz

  • Designed for CAT III 600V safety rating

  • Compact, portable, and user-friendly design

  • Certified: RoHS, CE, UKCA, EAC

Technical Specifications

Electrical Parameters

  • Nominal Voltage (Rotary Direction): 1–400V AC

  • Nominal Voltage (Phase Indication): 120–400V AC

  • Frequency Range: 2–400 Hz

  • Test Currents (per phase): < 3.5 mA

General Specifications

  • Operating Temperature: 0°C ~ 40°C

  • Relative Humidity: 15%–80% RH

  • Operating Altitude: up to 2000m

  • Pollution Degree: 2

Safety Rating

  • CAT III 600V

Functions

  • Motor & phase rotation indicator: Yes

  • AC Voltage: up to 400V

  • Frequency: up to 400Hz

  • Data Hold: No

  • RCD/GFCI Test: No

  • Backlight: No

Certifications

  • RoHS, CE, UKCA, EAC

Applications

  • Phase sequence verification in electrical installations

  • Motor rotation direction checks in industrial systems

  • Safe commissioning and maintenance of AC systems

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