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Carlo Gavazzi Three-Phase Monitoring Relays Protect Facilities and Machinery

Carlo Gavazzi has been making monitoring relays since 1956, and are a market leader with their voltage, current and frequency monitoring relays. Their three-phase monitoring relays for voltages up to 690VAC, protect against phase reversal, phase loss and/or under-voltage sags. Some offer adjustable time delays to avoid nuisance trips.

  • Monitoring Relays are typically used to protect pumps, motors, HVACR equipment, elevators/escalators, trams, food and beverage production and dispensing equipment.
  • Devices without an adjustable potentiometer will detect regenerated voltage up to 85% of the nominal voltage (phase-phase).
  • DPA Series: Basic Function Relays perform a single function, i.e. Phase Sequence or Loss, Phase Asymmetry, Under Voltage, etc.
  • DPB Series: Extended Function Relays, which in addition to offering the Basic Function shown above, also offer an adjustable time delay, hysteresis and/or latch function.
  • DPC Series: Full Function Relays, in addition to offering Basic/Extended Function shown above, they also offer two outputs and two adjustable set point, two adjustable time delay and two adjustable hysteresis level potentiometers/settings.
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20 Products

    DPA01CM44 Carlo Gavazzi
    3-Phase Delta Monitoring Relay, Sequence and Phase Loss, 1 SPDT Relay Output, IP20, DIN-rail mounting, Measuring ...
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    In Stock: 50
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    1
    $122.67
    5
    $114.27
    10
    $111.15
    20
    $110.87
    50
    $106.70
    DPA53CM48 Carlo Gavazzi
    3-Phase Delta Monitoring Relay, Sequence and Phase Loss, 1 SPDT Relay Output, IP20, DIN-rail mounting, Measuring ...
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    In Stock: 3
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    1
    $149.94
    3
    $148.46
    5 +
    $135.25
    DPA51CM44 Carlo Gavazzi
    3-Phase Delta Monitoring Relay, Sequence and Phase Loss, 1 SPDT Relay Output, IP20, DIN-rail mounting, Measuring ...
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    In Stock: 17
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    1
    $100.69
    5
    $94.71
    10 +
    $89.56
    DPC01DM49400HZ Carlo Gavazzi
    3-Phase Star-Delta True RMS Monitoring Relay, Asymmetry, Tolerance, Sequence and Phase Loss, Over/Under Voltage, ...
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    In Stock: 10
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    3
    $213.15
    6
    $204.40
    12
    $201.13
    21
    $197.84
    51
    $194.09
    DPA53CM23 Carlo Gavazzi
    3-Phase Delta Monitoring Relay, Sequence and Phase Loss, 1 SPDT Relay Output, IP20, DIN-rail mounting, Measuring ...
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    In Stock: 13
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    1
    $108.19
    5
    $104.01
    10
    $101.78
    20
    $99.75
    50
    $98.25
    DPC01DM48 Carlo Gavazzi
    3-Phase Star-Delta True RMS Monitoring Relay, Asymmetry, Tolerance, Sequence and Phase Loss, Over/Under Voltage, ...
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    In Stock: 8
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    On Order: 10
    Ships 10/30/26

    3
    $213.15
    6
    $204.39
    12
    $201.12
    21
    $197.83
    51
    $194.08
    DPB02CM44 Carlo Gavazzi
    3-PHASE ASYMMETRY MONITORIN
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    In Stock: 15
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    1
    $313.05
    3
    $303.21
    5
    $290.73
    10
    $290.00
    25 +
    $289.28
    DPA55CM44 Carlo Gavazzi
    3-Phase Delta Monitoring Relay, Sequence and Phase Loss, Window Voltage Selection, 1 SPDT Relay Output, IP20, DIN ...
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    In Stock: 3
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    1
    $180.13
    2
    $178.34
    3
    $176.60
    4 +
    $166.02
    DPC02DM44 Carlo Gavazzi
    3 PHASE VOLTAGE AND FREQUEN
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    In Stock: 5
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    1
    $367.68
    3
    $340.20
    6
    $325.54
    12
    $316.43
    27 +
    $307.79
    PPB01CM23 Carlo Gavazzi
    3-Phase Star-Delta True RMS Monitoring Relay, Sequence and Phase Loss, Over/Under Voltage, 1 SPDT Relay Output, I ...
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    In Stock: 10
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    1
    $236.66
    2
    $221.30
    3
    $214.34
    4
    $212.22
    5 +
    $210.12