ECS Series - Current Sensor

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The ECS Series of single-phase AC current sensors is a universal, overcurrent or undercurrent sensing control. Its built-in toroidal sensor eliminates the inconvenience of installing a stand-alone current transformer. Includes onboard adjustments for current sensing mode, trip point, and trip delay. Detects over or undercurrent events like locked rotor, loss of load, an open heater or lamp load, or proves an operation is taking place or has ended.


Operation
Input voltage must be supplied at all times for proper operation. When a fault is sensed throughout the trip delay, the output relay is energized. When the current returns to the normal run condition or zero, the output and the delay are reset. If a fault is sensed and then corrected before the trip delay is completed, the relay will not energize and the trip delay is reset to zero.

Access specifications, certifications, check availability and order parts below

Catalog #Input
Voltage (V)
Output
Form
Termination TypeMounting MethodDimensionsWeight (lbs/g)CircuitryHumidityInput AC Line Frequency (Hz)Input Tolerance (%)Insulation ResistanceIsolation Voltage (V)LifeOutput Load Rating (VA)Output TypeStockCompare
ECS20BC24 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-15 - 20%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS21BC24 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-15 - 20%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS2HBC24 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-15 - 20%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS30AC24 VdcIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing-15 - 20%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS31AC24 VdcIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing-15 - 20%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS40A120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS40AC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS40BC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS41A120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS41AC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS41BC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS41BD120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS41BH120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS4HBC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS4HBH120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS60AH230 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS60BC230 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS61BC230 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECS6HAH230 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH21F2.5C24 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-15 - 20%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH30AC24 VdcIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing-15 - 20%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH31AD24VDCIsolated SPDT0.25 in. (6.35mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)≅6.4oz (181g)Encapsulated95% relative non-condensing-15-20%≥100 MΩ≥2500V RMS input to outputMechanical - 1 x 106; Electrical - 1 x 10510A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VACElectromechanical relay
ECSH40A120VACIsolated SPDT0.25 in. (6.35mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)≅6.4oz (181g)Encapsulated95% relative non-condensing-20--10%≥100 MΩ≥2500V RMS input to outputMechanical - 1 x 106; Electrical - 1 x 10510A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VACElectromechanical relay
ECSH40AC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH40AD120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH41AC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH41AD120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH41BC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH41F.08D120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH4HAD120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH4HF.08D120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH61AD230 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL31A24 VdcIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing-15 - 20%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL40AC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL40BH120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL41A120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL41AD120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL41AH120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL4HAC120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL4HBH120 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL61AH230 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSL6HAC230 VacIsolated SPDT0.25 in. (6.35 mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)0 Kg95% non-condensing50 / 60-20 - 10%≥100≥2500 Vrms input to output10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 VacElectromechanical relayCheck
ECSH34F.08C
Obsolete: 2020 -10-05
24VDCIsolated SPDT0.25 in. (6.35mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)≅6.4oz (181g)Encapsulated95% relative non-condensing-15-20%≥100 MΩ≥2500V RMS input to outputMechanical - 1 x 106; Electrical - 1 x 10510A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VACElectromechanical relay
ECSH3HF0.08D
Obsolete: 2020 -10-05
24VDCIsolated SPDT0.25 in. (6.35mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)≅6.4oz (181g)Encapsulated95% relative non-condensing-15-20%≥100 MΩ≥2500V RMS input to outputMechanical - 1 x 106; Electrical - 1 x 10510A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VACElectromechanical relay
ECSL40B
Obsolete: 2020 -10-05
120VACIsolated SPDT0.25 in. (6.35mm) male quick connect terminals (5)Surface mount with two #6 (M3.5 x 0.6) screws3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)≅6.4oz (181g)Encapsulated95% relative non-condensing-20--10%≥100 MΩ≥2500V RMS input to outputMechanical - 1 x 106; Electrical - 1 x 10510A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VACElectromechanical relay
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s)
ECS40BC CURRENT SENSOR RoHS No 12/26/2017 PbFree No 12/26/2017 CoC_RoHS9_ECS40BC_12-27-2017 Yes
12/26/2017
ECSL40AC CURRENT SENSOR RoHS No 04/23/2021 PbFree No 04/23/2021 CoC_RoHS9_ECSL40AC_04-23-2021 REACH197_Declaration_with_Pb_ECSL40AC_05-15-2021 Yes
04/23/2021
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