Current, Voltage & Phase Monitors
Gavazzi products include current monitors, voltage monitors, power monitors, phase loss relays, inverters, 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.
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51/71 Series Compact Current/Voltage/Phase Monitors with relay output • Current
Monitor Current/Voltage Monitors with relay output • Current Monitor • Voltage Monitor • Phase Loss/Sequence Monitor • 1 Phase Voltage Window Monitor • 3 Phase Voltage Window Monitor • Thermistor Monitor |
Frequently Asked Questions
What do current monitoring relays do?
Carlo Gavazzi monitoring controls cover over/under current and over/under load, among other conditions. The DIA01 current monitor on this page, for example, is an AC/DC over current monitoring relay with a 0.5 to 5 A AC/DC measuring range, an adjustable current limit and hysteresis, and an 8 A SPDT relay output.
What is a phase monitoring relay?
It is a 3-phase monitoring relay for phase sequence and phase loss: the DPA51 and DPA71, for example, detect when all phases are present and have the correct sequence, with a 5 A SPDT (DPA51) or DPDT (DPA71) relay output. The DPB71 also checks that the phase-phase or phase-neutral voltages are within separately adjustable upper and lower limits.
Where are monitoring relays used?
They protect motors against the damaging effects of single phasing and overloads, for example on elevators, compressors, pumps, air conditioning systems, and mixing tanks. They are also used for monitoring instrumentation signals (4-20 mA, 0-10 V), verification of machinery operation, detection of broken heater elements, monitoring of lights in critical areas such as airport runway lights, monitoring of ventilation fans, and in building automation systems.
Rather have it arrive wired and tested? Our UL 508A panel shop can build the whole panel for you.