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KNOPP Phase Sequence Indicator

Item_number: KN44030 Categories: , , , Tag:

Use of the Knopp K-3 Phase Sequence Indicator saves man-hours and protects valuable equipment against damage. It pays for itself in a short time.


POSITIVE, STRAIGHTFORWARD SEQUENCE INDICATION IS PROVIDED over a wide variety of voltage and frequency by direction of rotor rotation. No need for range switching or terminal charging. Also indicates an open phase.

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Item_number: KN44030 Categories: , , , Tag:


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KNOPP Phase Sequence Indicator

  • Specially designed induction motor unmistakably indicates the phase sequence by direction of rotation or rotor disc.
  • The Lead Set is permanently connected to the instrument to save testing time and prevents errors in connecting
  • For ease and certainty in identifying connections, the test clips are permanently marked with letters A, B, and C, and the corresponding flexible leads and slip insulators are coded red, white, and blue.
  • The patented circuit and switch arrangement makes for instrument protection and personnel safety. Because of the switch, the Indicator clips can be left connected to the circuit-under-test between "before" and "after" readings of the phase sequence - timesaving and error preventing. Between these tests, the instrument can be left hanging from the clips.
  • There are no exposed metal parts. The instrument housing is made of laminated phenolic and is cylindrically shaped for exceptionally rugged service-proven construction. The three window panes are small and deeply recessed for protection from impacts.
  • Good visibility of the rotor movement is assured. The black area of the aluminum rotor blacks out windows in phase sequence.
  • Only 21 oz. in weight, the indicator is small and easily carried.



Additional information

Weight 1.5 lbs
Dimensions 4 × 4 × 2 in
Lead Length



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