Megger PSI410 Phase Sequence Indicator

The Megger PSI410 Phase Sequence Indicator enables electricians and maintenance engineers to verify phase rotation quickly and accurately on three-phase electrical systems. Users can confirm the correct phase sequence before commissioning equipment, helping to protect motors, pumps and air conditioning systems from incorrect rotation. This allows teams to carry out checks safely, efficiently and with confidence.

Using a clear dual-colour LED display and audible indication, the unit makes phase identification simple. Green LEDs show clockwise rotation, while red LEDs indicate anti-clockwise rotation. At the same time, different audible tones provide extra confirmation of the detected direction.

Clear Phase Identification

Designed for straightforward operation, the Megger PSI410 Phase Sequence Indicator displays both phase rotation and phase condition information. The triple bi-coloured LED arrangement helps users confirm that all phases are present. In addition, colour-coded indications make results easy to understand at a glance.

Because the instrument is self-powered from the connected supply, there is no need for batteries. Long fused test leads improve user safety during testing. Furthermore, the supplied crocodile clips and test prods allow fast connection to a wide range of three-phase installations.

Built for Industrial Environments

A durable housing protects the Megger PSI410 Phase Sequence Indicator in demanding working conditions. The slow LED rotation speed has been designed to aid visual identification without matching the supply frequency. This helps users make accurate checks with minimal effort.

Two different set types are available to suit application requirements. The instrument is suitable for checking phase sequence on motors, pumps and three-phase air conditioning systems. Combined with its rugged design and simple operation, it offers a dependable solution for routine electrical testing.

Key Features

Determines clockwise and anti-clockwise phase rotation
Audible indication supports visual phase identification
Triple bi-coloured LED display for clear status indication
Green LED indication for phase presence
Red LED indication for missing phase detection
Self-powered operation from the connected supply
Suitable for three-phase electrical installations
Designed for motors, pumps and air conditioning systems
Long fused test leads supplied
Crocodile clips included for rapid connection
Insulated test prods improve operational safety
Less than 4 mm exposed probe tip design
Colour-coded indications for quick interpretation
Durable casing for industrial use
Available in two different set configurations

Technical Specifications

Manufacturer	Megger
Product name	PSI410 Phase Sequence Indicator
Manufacturer part code	PSI410
Instrument type	Phase sequence indicator
Power source	Self-powered from connected supply
Phase rotation indication	Clockwise and anti-clockwise detection
Visual indication	Dual-colour LED display
LED configuration	Triple bi-coloured LED arrangement
Audible indication	Distinct tones for rotation direction
Clockwise indication	Green LEDs with continuous tone
Anti-clockwise indication	Red LEDs with warbling tone
Phase condition display	Indicates presence or absence of phases
Phase present indication	Green LED indication
Missing phase indication	Red LED indication
Test lead type	Long fused test leads
Connection accessories	Crocodile clips and test prods supplied
Probe insulation	Insulated prods
Exposed probe tip	Less than 4 mm
Housing type	Rugged industrial construction
Application	Three-phase supply testing
Typical equipment tested	Motors, pumps and air conditioning systems
Operation	Battery-free design
Available versions	Two different set types available
Warranty	Not specified

Document Downloads

Megger PSI410 Phase Sequence Indicator - Datasheet (Size: 406 KB)

What’s Included