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Current Voltage Monitors
Current voltageCarlo Gavazzi offers a comprehensive range of monitoring controls for monitoring of phase loss, incorrect phase sequence, phase unbalance, over/under current, over/under load, over/under frequency, and over/under voltage.

Our products include current monitors, voltage monitors, power monitors, phase loss relays, and current transformers.

These monitors are used in a wide range of applications for protecting motors against the damaging effects of single phasing and overloads (elevators, compressors, pumps, air conditioning systems, mixing tanks). They are also used extensively for monitoring instrumentation signals (4-20mA, 0-10V), verification of machinery operation, detection of broken heater elements, monitoring of lights in critical areas (runway lights at airports), monitoring of ventilation fans, and in building automation systems.

Product Selector
Current Transformers
Product Brochure
If you already know the series of current, voltage, or phase monitor, you can click the list below to view the datasheet.
DP 51/71 Series
Compact Current/Voltage/Phase Monitors with relay output.


Current Monitor
Phase Loss/Sequence Monitor
Phase Loss/Sequence/Under Voltage Monitor
Phase Loss/Sequence/Voltage Monitor

DPA Series
Current/voltage/Phase Monitors with relay output.


Current Monitor
Voltage Monitor
Phase Loss/Sequence Monitor
1 Phase Voltage Window Monitor
3 Phase Voltage Window Monitor

DPB Series
Current/voltage/Phase Monitors with relay output, adjustable hysterisis, and built-in timer.

Current Monitor
Voltage Monitor
Frequency Monitor
Phase Loss/Sequence Monitor

DPC Series
Current/voltage/Phase Monitors with 2 relay outputs, adjustable hysterisis, and 2 built-in timers.

Current Monitor
Voltage Monitor
Phase Loss/Seq./Asym.
Load Guard

MI/MP Series
Single and three phase current transformers for use with Carlo Gavazzi monitoring relays.

Single Phase
Three Phase

E83/A82 Series
Current transformers with analogue output.

0 - 50 Amps
0 - 500 Amps/4-20 mA out
0 - 500 Amps/0-10 V out

CTD Series
Standard current transformers with 0-5 Amp output.

Up to 300 Amps
Up to 600 Amps
Up to 1200 Amps
Up to 1600 Amps

CTD-S Series
Split core current transformers with 0-5 Amp output.


100 to 400 Amps (26x32 mm opening)
150 to 1000 Amps (50x52 mm opening)
150 to 2500 Amps (30x80 mm opening)
400 to 4000 Amps (35x125 mm opening)
400 to 4000 Amps (50x126 mm opening)


DER Series
DC Current Shunts

0- 10000 Amps

© Carlo Gavazzi Inc 2006
Control Products