MEGGER PSI410 Phase Sequence Indicator – CAT IV 600 V, LED & Audible Phase Rotation Tester

MEGGER psi410 phase sequence indicator review

The MEGGER PSI410 is a professional phase sequence indicator designed for electricians working with three-phase supplies in motors, pumps, HVAC, and industrial installations . Incorrect phase rotation can damage motors, brakes, and valves within minutes; the PSI410 prevents this by providing rapid and reliable indication of phase order.

Using a triple bi-coloured LED system and an audible tone, the PSI410 shows clockwise rotation with green LEDs and a continuous tone, while counter-clockwise rotation is indicated with red LEDs and a warbling tone. The rugged, compact unit also shows missing phases, thanks to its clear phase condition indicators.

As the authorized MEGGER distributor in UAE and Dubai, we supply genuine PSI410 units with full warranty and competitive pricing.

MEGGER PSI410 Phase Sequence Indicator Key Features

Here are the main highlights that make the PSI410 essential for three-phase work:

• LED phase rotation indication: clockwise (green LEDs + continuous tone) / counter-clockwise (red LEDs + warble tone)
• Phase condition LEDs: confirm presence or absence of each phase
• Dual phase colour coding: compatible with Brown/Black/Grey and Red/Yellow/Blue wiring systems
• Rugged industrial design: IP54 protection against dust and splashes
• Fused test leads and croc clips included for safety and convenience
• Self-powered: no batteries required, powered from two connected phases
• Safety rated: IEC61010 CAT IV 600 V

MEGGER PSI410 Applications

The MEGGER PSI410 is ideal for:

• Electricians verifying phase rotation in motor and pump installations

• HVAC engineers checking three-phase air conditioning systems

• Industrial maintenance teams troubleshooting motors, drives, and valves

• Quick phase order testing during commissioning and servicing

• Ensuring equipment protection from incorrect phasing in UAE industrial sites

Contents of the MEGGER PSI410 box

• MEGGER PSI410 phase sequence indicator unit

• Long fused test leads (830 mm)

• Crocodile clips and insulated prods

• Quick start guide

Optional: replacement set of 3 × tips & 3 × croc clips (part no. 1007-289)