Shiva Amvaj Three-Phase Ampere Control Relay

In addition to displaying current, Shiva Amvaj Three-Phase Ampere Control Relay protects three-phase motors against over current, undercurrent, and current asymmetry.


  • Measures and displays current; protects against over current, undercurrent, and current asymmetry.
  • Options:
    • Adjustable min and max current and alarm threshold
    • Adjustable delayed start for heavy motors
    • Built-in alarm for error warning
    • Two separate relays for ALARM and TRIP
  • Ten indicators:
    • AC: grid electricity
    • Alarm Relay: alarm relay mode
    • Trip Relay: trip relay mode
    • Delay Start: delayed initial start (3-300 sec)
    • CT: display and adjust CT (5–1000A)
    • Delay Off: delayed disconnect (2–60 sec)
    • Unbalance: current asymmetry (10–100% CT)
    • Max: max current (0.01A–120% CT)
    • Alarm: alarm current (0­­–120% CT)
    • Min: min current (0–120% CT)

Note: indicators blink when in adjustment mode.

  • Terminal wiring and installation manuals

Note: initial start time is the time after starting during which no current increase factors in.


  • supply voltage/external RESET: 180-250 VAC/PH-N /50-60 Hz
  • Accuracy: 0.5% ± 1digit
  • Adjustment time for CT and other parameters: five minutes from connection to power
  • Operating conditions
    • Temperature: -20 to 65 oC
    • Humidity: 70%
  • Output: two 16A relays

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