500-Phase-Sequence-Indicator

Phase Sequence Indicator (500)

$642.34

Basic phase sequence testing has never been easier. The TESCO 500 requires no switches, batteries, or calibration. Just connect, observe the neon indicators, and interpret the phase order. If voltages are symmetrical, only one lamp will glow—instantly showing the sequence. In cases with unsymmetrical voltages (like two phase wires and a neutral), the brighter lamp reveals the correct order.

This handheld device is ideal for any technician who needs fast and accurate confirmation of wiring sequence in the field.
As easy as 1-2-3 (or 3-2-1).

SKU: 500 Category:
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Description

Phase Sequence Detection—Simplified
TESCO’s Phase Sequence Indicator (Catalog No. 500) is a compact, lightweight tool that makes identifying 3-phase wiring order quick and foolproof. Whether you’re checking transformer banks, verifying service connections, or troubleshooting field equipment, this tool tells you—visually—if your sequence is correct.

Key Features:

  • One lamp light for 1-2-3 phase sequence
  • One lamp light for 3-2-1 phase sequence
  • Voltage Range: Works from 115V to 600V at 60Hz
  • No Moving Parts: Solid-state design for long-lasting durability
  • Clip lead (#2) to one terminal
  • Touch insulated prod (#1) to the second terminal
  • Touch prod (#3) to the third terminal
  • 1″ diameter × 6 3/8″ length (2.54 cm × 16.17 cm)
  • Total weight including leads: 4 oz (0.114 kg)

Product Documents