Uni-T 261A Phase Sequence Indicator – 40V-690V 3-Phase Rotation & Missing Phase Tester (UT261A)
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UNI-T UT261A Phase Sequence Indicator
Product Overview of UT261A
The UNI-T UT261A Phase Sequence Indicator is a professional electrical testing device designed to identify phase sequence and detect missing phases in three-phase power systems.
It is commonly used by electricians, maintenance technicians, and industrial installers to verify the correct phase order before connecting motors, pumps, compressors, and other three-phase equipment.
The UT261A operates across a wide AC voltage range of 40V to 690V and supports a frequency range from 15Hz to 400Hz, making it suitable for most industrial electrical systems.
Built with a durable impact-resistant housing, the device can withstand drops from up to 2 meters, ensuring reliable performance in demanding job-site environments.
Key Features of UT261A
• Phase Sequence Detection – Identifies correct phase order in three-phase systems
• Missing Phase Indication – Quickly detects phase loss or wiring issues
• Wide Voltage Range – Supports 40V to 690V AC testing
• Wide Frequency Range – Operates between 15Hz to 400Hz
• Durable Construction – Withstands impacts from up to 2 meters
• Clear LCD Display – Provides easy phase indication results
Technical Specifications of UT261A
| Specification | Details |
|---|---|
| Brand | UNI-T |
| Model | UT261A |
| Product Type | Phase Sequence Indicator |
| Voltage Range | 40V – 690V AC |
| Frequency Range | 15Hz – 400Hz |
| Working Current | < 1mA |
| Phase Sequence Indication | LCD Display |
| Missing Phase Indication | LCD Display |
| Motor Rotation Test | Not Available (UT261B only) |
| Power Supply | No Battery Required |
| Product Dimensions | 123mm × 71mm × 29mm |
| Net Weight | 160g |
| Product Color | Red & Grey |
Comparison within UT261 Series
| Model | Voltage Range | Phase Sequence | Missing Phase | Motor Rotation | Display |
|---|---|---|---|---|---|
| UT261A | 40V–690V | Yes | Yes | No | LCD |
| UT261B | 90V–600V | Yes | Yes | Yes | LED |
Typical Applications
The UNI-T UT261A Phase Sequence Indicator is commonly used for:
• Electrical installation and maintenance
• Industrial motor installation
• HVAC system wiring verification
• Generator and power distribution testing
• Troubleshooting three-phase power systems
Package Includes
1 × UNI-T UT261A Phase Sequence Indicator
3 × Test Leads with Alligator Clips
1 × Carrying Bag
1 × User Manual
Certifications
The UT261 Series complies with international safety standards including:
• CE
• UKCA
• cETLus
Why Choose the UNI-T UT261A?
✔ Reliable testing tool from UNI-T
✔ Wide 40V–690V testing capability
✔ No battery required, ready to use anytime
✔ Durable 2-meter drop resistance
✔ Ideal for electricians and industrial maintenance
FAQs
What does the UNI-T UT261A measure?
The UT261A determines the phase sequence and detects missing phases in three-phase electrical systems.
Can the UT261A test motor rotation direction?
No. Motor rotation testing is available on the UT261B model, not UT261A.
Does the UT261A require a battery?
No. The device operates directly from the tested circuit and does not require a battery.
What voltage range can the UT261A test?
The tester supports 40V to 690V AC three-phase systems.
Order by 4PM to get delivered next working day! We use 24 hours service with carriers in most cases so that you can get your order delivered on time.
Free delivery for total orders above RM500, otherwise additional charges costs are calculated at checkout based on your order’s weight and delivery location.
Further details please click here for more info.
Please notify us within 14 calendar days of receiving your product to request a free exchange or full refund, if eligible. We will cover all return shipping costs, and no restocking fees will apply in this case.
Requests made after 14 days may be accepted at our discretion and will be subject to a 10% restocking fee. Techno Tools & Equipment reserves the right to reject any return request found to be ineligible.
Further details please click here for more info.