Martindale PSI4000 Phase Sequence Indicator

Martindale Electric

Martindale approved distributor and service centre.

The PSI4000 features 3 inductive crocodile clips that simply clip around either insulated or uninsulated conductors.

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Usually Stock or Short Lead Time

£ 172.00 rrp £ 215.00

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(£ 206.40 inc VAT.)

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The Martindale PSI4000 is a unique phase rotation indicator that carries out the measurement via inductive crocodile clips. This method increases the safety of the user, whilst the bright LEDs give a clear indication of either clockwise or anti-clockwise phase rotation.

The design of this phase rotation tester allows for use on both insulated or uninsulated conductors, and an "Enhanced Brightness" switch makes indication brighter in strong ambient light. A combination of both rotating LEDs and buzzer tones indicate clockwise or anti-clockwise rotation.


Non-contact connection clips to enhance user safety during testing and also allow the testing of insulated conductors.
Illuminated LED’s to indicate the detection of live phases.
Rotating LED’s and buzzer tones to indicate clockwise or anti-clockwise phase sequence.
Auto-off function after 5 minutes of non-detection.
Enhanced brightness switch to make the indication brighter in strong ambient light.
Magnetic studs on rear casing to allow hands free operation.
High quality colour coded clips.

Martindale PSI4000 Specifications:

  • Measurement Principle: Static Induction.
  • Clockwise Indication.
  • Input Voltage: 150V - 1000V 3 Phase AC.
  • Frequency Range: 45 - 65Hz.
  • Sensor clip cable length: Approx. 800mm.
  • Minimum conductor diameter: 2.4mm.
  • Maximum conductor diameter: 30mm.
  • Power Source: 1.5V x 4 AA / LR6 alkaline batteries.
  • Low battery warning: Power LED flashes below 4.6 ± 0.1V DC battery voltage.
  • Auto off: After 5 mins of non-activity.
  • Dimensions: 118 x 69 x 38 mm.
  • Weight: 370g approx (batteries included).
  • PSI4000 warranty: 2 years.

Includes: Martindale PSI4000, 4 x 1.5V alkaline batteries, soft case & instructions.

Indication Clockwise
Non-Contact Yes
Direction Indication LED

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Martindale PSI4000 Phase Sequence Indicator