ECSW6MBHT - ECSW Series

Series: ECSW
Questions? Contact Littelfuse Support
Roll Over to Zoom
Disclaimer Notice

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 ECSW Series of single-phase, AC window, current sensors includes adjustable overcurrent and undercurrent trip points. Detects locked rotor, jam, loss of load, an open heater or lamp load, a broken belt, or loss of suction. LED’s aid in trip point adjustment and provide fault indication. The built-in toroidal sensor eliminates the need for an external current transformer. The output can be electrically latched after a fault, or automatically reset. Remote resetting of a latched output by removing input voltage. The unit includes switch selectable zero current detection and normally de-energized or energized output operation. Time delays are included to improve operation and eliminate nuisance tripping.


See datasheet for operation detail.

Check Stock Order Samples

Product Literature

For Technical Questions

Call +1 800-832-3873 or email us at relays@littelfuse.com 

Property (Mouseover for details) Value
Input Voltage (V) 230 Vac
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50 / 60
Output Type Electromechanical relay
Output Form Isolated SPDT
Output Load Rating (VA) 10 A resistive @ 240 Vac; 1/4 hp @ 125 Vac; 1/2 hp @ 250 Vac
Time Delay Range 0.5 - 50 s adjustable
Time Delay Tolerance (%) Guaranteed range
Response Time (ms) ≤75 ms
Trip Delay Sensing on Startup (s) Fixed: 0.1 - 6 s in 1 s increments
Trip Point Range 2 - 20 adjustable
Undercurrent Trip Point <250 mA turns typical
Sensor Type Toroid; through hole wiring for up to #4 AWG (21.1 mm²) THHN wire
Sensor Mode Over and undercurrent trip points (window current sensing)
Sensor Tolerance Guaranteed range
Current Sensor Range Steady - 50A turns; Inrush - 300A turns for 10s
Sensor Frequency (Hz) 45/500
Insulation Resistance ≥100
Isolation voltage ≥2500 Vrms input to output
Surge Protection IEEE C62.41-1991 Level A
Type of Detection Peak detection
Termination Type 0.197 in. (5 mm) terminal blocks for up to #12 (3.2 mm²) AWG wire
Mounting Method Surface mount with two #6 (M3.5 x 0.6) screws
Operating Temperature -40° to 60°C (-40° to 140°F)
Storage Temperature (F/C) -40° to 85°C (-40° to 185°F)
Humidity 95% non-condensing
Dimensions 3.5 H x 2.5 W x 1.75 D in. (88.9 x 63.5 x 44.5 mm)
Weight (lbs/g) 0 Kg
Check Stock Yes
Part # Part Description RoHS Pb-free RoHS (2015/ 863/EU) Certificate REACH (SVHC’s) Declaration Halogen Free REACH (SVHC’s) IPC-Material Declaration
ECSW6MBHT WINDOW CURRENT SENSOR RoHS No 05/14/2021 PbFree No 05/14/2021 Yes
05/14/2021
If the product environmental information that you are looking for does not appear in this tab,
please complete the Product Environmental Information Request Form.