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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: 53
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    1
    $119.10
    5
    $110.94
    10
    $107.91
    20
    $107.64
    50
    $103.59
    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: 2
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    1
    $145.57
    3
    $144.14
    5 +
    $131.31
    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
    $97.76
    5
    $91.95
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    $86.95
    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
    $206.94
    6
    $198.45
    12
    $195.27
    21
    $192.08
    51
    $188.44
    DPA01CM60 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: 4
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    1
    $155.02
    3
    $153.50
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    $142.42
    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
    $105.04
    5
    $100.98
    10
    $98.82
    20
    $96.84
    50
    $95.39
    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
    $206.94
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    $198.44
    12
    $195.26
    21
    $192.07
    51
    $188.43
    14 Weeks

    1
    $303.93
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    $294.38
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    $282.26
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    $281.55
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    $280.85
    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
    $174.88
    2
    $173.15
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    $171.46
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    $161.18
    14 Weeks

    1
    $356.97
    3
    $330.29
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    $316.06
    12
    $307.21
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    $298.83