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Megger PSI410 Phase Sequence Indicator (1001‑612)
The Megger PSI410 is a compact, self-powered phase sequence indicator for three-phase systems (up to 500 V). Its tri-color LEDs and audible tones quickly identify phase sequence (clockwise for correct, warbling for reverse) and missing phases. No batteries are needed—the unit draws power from the connected phases. Designed for industrial use, it features IP54 protection and CAT IV 600 V safety certification
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Box Content
- 1 x PSI410 phase sequence indicator
- 1 x Fused test leads with crocodile clips & insulated prods
- 1 x Instruction and safety leaflet included
Frequently Asked Questions
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Q: Does this require batteries?
A: No, it’s self-powered using the phases you're testing—no need for batteries
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Q: What indicates a reversed phase sequence?
A: LEDs rotate counter-clockwise with a red warbling audio signal
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Q: Is it safe for industrial three-phase systems?
A: Yes—rated CAT IV 600 V and IP54 for rugged environments
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Q: Can it detect a missing phase?
A: Yes—phase condition LEDs will display red if a phase is missing
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