Here is Greystone current sensor / switch
Available in closed and split-core
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The Greystone CS series of mini current switches monitors the current to the electrical load, e.g. a pump, conveyor, heat radiator, and closes the output contact when the measuring current exceeds the setpoint. The set point is adjusted on a potentiometer.
Measuring range: 0-75A or 0-200A.
SSR output NO
Self-sufficient via power loop
Operating temperature -15-60 °C
Hole size: 11mm

he Greystone CS-651 series of mini current sensors monitor the current to the electrical load for e.g. a pump, conveyor, radiator
Measuring range: Select variant: 0-10A, 0-20A, 0-50A or 0-10/20/50A
Output: 0-10VDC proportional to load current
Self-sufficient via power loop
Operating temperature -15-60 °C
Hole size: 20mm

The Greystone CS series of mini current sensors monitors the current to the electrical load for e.g. a pump, conveyor, radiator.
Measuring range: Select variant: 0-10A, 0-20A, 0-50A
Output: 4-20mA proportional to load current
Self-sufficient via power loop
Operating temperature -15-60 °C
Hole size: 20mm

The Greystone CS-675 series of mini current sensors monitors the current to the electrical load for e.g. a pump, conveyor, radiator.
Measuring range: 0-2A, 0-5A, 0-200A, 0-10/20/50A, 0-50/100/150A
Output: 4-20mA proportional to load current
Self-sufficient via power loop
Operating temperature -15-60 °C
Hole size: 20mm

Greystone SC series of Split-Core current sensor.
can be installed without removing the cable.
Monitors the current to the electrical load for e.g. a pump, conveyor, radiator.
Measuring range: 0-2/0-5/0-100/0-150/0-200A
Output: 4-20 mA
Self-sufficient via power loop
Operating temperature -15-60 °C
Hole size: 20mm
Greystone CS-GNG-100 mini power switches monitor the current to the electrical load for e.g. a pump, conveyor, heating r...
The power switch is a solid-state switch
Measuring ranges: 1-6, 6-40, 40-175 A
Output NO, (240VAC 1A)
Self-powered via c...