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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

    DPB01CM44 Carlo Gavazzi
    3-Phase Star-Delta True RMS Monitoring Relay, Sequence and Phase Loss, Over/Under Voltage, Over/Under Voltage, 1 ...
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    In Stock: 2
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    1
    $171.78
    5
    $168.97
    10
    $159.73
    20
    $155.53
    50
    $151.34
    DPB02CM44 Carlo Gavazzi
    3-phase Multifunction Monitoring Relay
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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
    DPC02DM44 Carlo Gavazzi
    3-phase Multifunction Monitoring Relay
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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
    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
    $204.39
    12
    $201.12
    21
    $197.83
    51
    $194.08
    DPC71DM48 Carlo Gavazzi
    3-phase Multifunction Monitoring Relay
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    In Stock: 2
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    1
    $346.58
    3
    $335.69
    5
    $321.88
    10
    $320.04
    25 +
    $318.33
    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
    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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    On Order: 10
    Ships 9/2/26

    1
    $151.99
    2
    $149.71
    3
    $147.47
    4
    $145.25
    5 +
    $142.35
    DPC01DM69 Carlo Gavazzi
    3-Phase Star-Delta True RMS Monitoring Relay, Asymmetry, Tolerance, Sequence and Phase Loss, Over/Under Voltage, ...
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    On Order: 3
    Ships 8/26/26

    1
    $339.34
    3
    $327.63
    6
    $314.19
    12
    $309.15
    21 +
    $304.11
    DPC01DM44 Carlo Gavazzi
    Threephase TRMS Voltage DIN Rail Multifunction Phase Monitoring Relay
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    In Stock: 13
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    1
    $209.33
    5
    $194.98
    10
    $188.83
    20
    $185.75
    50
    $182.22
    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: 72
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    1
    $129.36
    5
    $127.24
    10
    $120.28
    20
    $117.12
    50
    $107.62