Name: ECS Series - Current Sensor
Brand: Littelfuse Inc.

Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse. "Littelfuse" includes Littelfuse, Inc., and all of its affiliate entities.

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 Type	Mounting Method	Dimensions	Weight (lbs/g)	Circuitry	Humidity	Input AC Line Frequency (Hz)	Input Tolerance (%)	Insulation Resistance	Life	Output Load Rating (VA)	Output Type	Response Time (ms)	Stock	Samples

ECS20BC	24 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-15 - 20%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS21BC	24 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-15 - 20%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS2HBC	24 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-15 - 20%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS30AC	24 Vdc	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing		-15 - 20%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS31AC	24 Vdc	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing		-15 - 20%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS40A	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS40AC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS40BC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS41A	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS41AC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS41BC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS41BD	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS41BH	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS4HBC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS4HBH	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS60AH	230 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS60BC	230 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS61BC	230 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECS6HAH	230 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH30AC	24 Vdc	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing		-15 - 20%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH31AD	24VDC	Isolated SPDT	0.25 in. (6.35mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)	≅6.4oz (181g)	Encapsulated	95% relative non-condensing		-15-20%	≥100 MΩ	Mechanical - 1 x 10⁶; Electrical - 1 x 10⁵	10A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VAC	Electromechanical relay	≤75ms
ECSH40A	120VAC	Isolated SPDT	0.25 in. (6.35mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)	≅6.4oz (181g)	Encapsulated	95% relative non-condensing		-20--10%	≥100 MΩ	Mechanical - 1 x 10⁶; Electrical - 1 x 10⁵	10A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VAC	Electromechanical relay	≤75ms
ECSH40AC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH40AD	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH41AC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH41AD	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH41BC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH41F.08D	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH4HAD	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH4HF.08D	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH61AD	230 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL31A	24 Vdc	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing		-15 - 20%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL40AC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL40BH	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL41A	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL41AD	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL41AH	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL4HAC	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL4HBH	120 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL61AH	230 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSL6HAC	230 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-20 - 10%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms	Check	Order
ECSH21F2.5C Obsolete: 2020 -10-07	24 Vac	Isolated SPDT	0.25 in. (6.35 mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)	0 Kg		95% non-condensing	50 / 60	-15 - 20%	≥100		10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac	Electromechanical relay	≤75 ms
ECSH34F.08C Obsolete: 2020 -10-05	24VDC	Isolated SPDT	0.25 in. (6.35mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)	≅6.4oz (181g)	Encapsulated	95% relative non-condensing		-15-20%	≥100 MΩ	Mechanical - 1 x 10⁶; Electrical - 1 x 10⁵	10A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VAC	Electromechanical relay	≤75ms
ECSH3HF0.08D Obsolete: 2020 -10-05	24VDC	Isolated SPDT	0.25 in. (6.35mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)	≅6.4oz (181g)	Encapsulated	95% relative non-condensing		-15-20%	≥100 MΩ	Mechanical - 1 x 10⁶; Electrical - 1 x 10⁵	10A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VAC	Electromechanical relay	≤75ms
ECSL40B Obsolete: 2020 -10-05	120VAC	Isolated SPDT	0.25 in. (6.35mm) male quick connect terminals (5)	Surface mount with two #6 (M3.5 x 0.6) screws	3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)	≅6.4oz (181g)	Encapsulated	95% relative non-condensing		-20--10%	≥100 MΩ	Mechanical - 1 x 10⁶; Electrical - 1 x 10⁵	10A resistive @ 240VAC; 1/4hp @ 125VAC; 1/2hp @ 250VAC	Electromechanical relay	≤75ms

Part #	Part Description	RoHS	Pb-free	RoHS (2015/ 863/EU) Certificate	REACH (SVHC’s) Declaration	Halogen Free	REACH (SVHC’s)	IPC-Material Declaration
ECS40BC	CURRENT SENSOR	No 12/26/2017	No 12/26/2017			Yes 12/26/2017		Part Number - ECS40BC IPC-Material Declaration Select All X
ECSL40AC	CURRENT SENSOR	No 04/23/2021	No 04/23/2021	CoC_RoHS9_ECSL40AC		Yes 04/23/2021		Part Number - ECSL40AC IPC-Material Declaration Select All X

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ECS Series - Current Sensor

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