The MASTECH MS5900 Motor & Phase Rotation Indicator is a professional-grade testing device designed for accurate motor rotation and phase sequence detection in electrical systems. Engineered for electricians, technicians, and industrial maintenance professionals, this compact and reliable tester ensures safe and efficient troubleshooting for three-phase equipment.
With a CAT III 600V safety rating, the MS5900 delivers dependable performance for industrial and commercial applications. Its durable construction and user-friendly operation make it an essential tool for motor installation, maintenance, and electrical inspection work.
Key Features:
- Motor & Phase Rotation Detection – Quickly identifies phase sequence and motor rotation direction
- CAT III 600V Safety Rating – Enhanced protection for professional electrical testing
- RoHS Certified – Complies with environmental and safety standards
- Wide Operating Temperature – Functions efficiently from 0°C to 40°C
- Reliable Performance – Suitable for operating altitudes up to 2000m
- Humidity Resistant – Operates within 15%–80% RH conditions
- Compact & Easy to Use – Ideal for fieldwork and industrial maintenance
Specifications:
- Nominal Voltage Rotary Direction: 1~400V AC
- Nominal Voltage Phase Indication: 120~400V AC
- Frequency: 2~400Hz
- Test Currents(In per Phase): Less Than 3.5mA
- Power Supply: 1x9V 6F22 Battery
- Dimension: 130x72x32 mm
- Weight: 193g
Applications:
- Electrical maintenance
- Industrial motor installation
- Three-phase system testing
- HVAC servicing
- Factory and workshop inspections
The MASTECH MS5900 is a dependable solution for professionals who require accurate phase rotation testing and safe electrical diagnostics in demanding work environments.
Contact Heap Soon Hardware Machinery Sdn Bhd today to learn more about our products or to request pricing and availability.


