Field Instruments

The UNI-T UT261A Phase Rotation Tester is a reliable and user-friendly instrument designed for detecting phase sequence and missing phase conditions in three-phase electrical systems.

Built for industrial and maintenance applications, the UT261A features a clear LCD display for easy identification of phase rotation direction and phase status. It operates without a battery, drawing power directly from the tested circuit, ensuring maintenance-free operation and continuous reliability.

With its durable construction and ability to withstand harsh environments, the UT261A is ideal for electricians, technicians, and engineers working on motor installation, electrical troubleshooting, and power system verification.

Key Features

• Phase sequence detection (L1, L2, L3)
• Identifies missing phase conditions
• Clear and intuitive LCD display
• No battery required (powered by test circuit)
• Suitable for motor installation and maintenance
• Durable design with 2-meter drop resistance
• Compact and lightweight for field use
• Reliable performance in industrial environments

Technical Specifications

General Information

• Model: UT261A
• Type: Phase Rotation Tester

Electrical Measurement

• AC Voltage Range: 40 V to 700 V AC
• Frequency Range: 15 Hz to 400 Hz
• Working Current: <1 mA

Functional Capabilities

• Phase sequence indication (LCD)
• Missing phase detection (LCD)
• Three-phase system verification

Display & Indication

• Display Type: LCD
• Indicates:
  • Phase sequence (L1, L2, L3)
  • Rotation direction
  • Missing phase status

Safety & Build

• Safety Rating: CAT III 600 V
• Certifications: CE, UKCA, cETLus

Mechanical Specifications

• Dimensions: 123 × 71 × 29 mm
• Weight: Approx. 160 g
• Power Supply: From unit under test (no battery required)

Included Accessories

• Test leads with alligator clips (×3)
• User manual
• Carrying bag

Applications

• Motor rotation and installation testing
• Three-phase system troubleshooting
• Electrical maintenance and commissioning
• Industrial power system inspection
• Detecting wiring faults and phase loss
• Preventing reverse rotation damage

How It Works

1. Connect Leads – Attach the three test leads to the phases
2. Power Detection – Device powers from the circuit
3. Read Display – LCD shows phase order and rotation
4. Verify System – Identify correct sequence or faults

Why Buy from FieldInstruments.lk?

• Genuine UNI-T testing instruments
• Competitive pricing in Sri Lanka
• Fast island-wide delivery
• Trusted supplier for electrical tools
• Reliable after-sales support

Fieldinstruments.lk
50/3, Angampitiya Rd, Ethul Kotte, Sri Lanka. 10100.
Phone: +94718555888 Email: info@fieldinstruments.lk