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ECSW SERIES

ECSW SERIES
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Protection Relays Current Monitoring Relays and Transducers Llttelfuse* Expertise Applied | Answers Delivered ECSW SERIES Current Sensors C€TO€ Wiring Diagram Description 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. Features & Benefits FEATURES Built-in toroidal current sensing Eliminates need to install stand alone current transformer and provides isolation from monitored circuit Encapsulated LED indication Protects against shock, vibration, and humidity Visual indication for trip point adjustment and fault indication Multiple switch selectable features Adjustable trip delay User selectable zero current detection, latched, normally de-energized, or energized output adds application flexibility Eliminates nuisance tripping and prevents rapid cycling Isolated 10A, SPDT output contacts Allows control of loads for AC or DC voltages V = Voltage I> = Adjustable Overcurrent I< = Adjustable Undercurrent W = Monitored Wire AT - Adjustable Trip Delay Operation When the input voltage is applied, sensing delay on startup begins and the output transfers (if normally energized is selected). Upon completion of the startup delay, sensing of the monitored current begins. As long as current is above undercurrent trip point and below the overcurrent trip point (inside the window), the output relay remains in its normal operating condition and both red LED's are OFF The green LED glows when the output is energized. If current varies outside the window, the associated red LED glows, and the trip delay begins. If the current remains outside the window for the full Ordering Information MODEL INPUT VOLTAGE TRIP POINT ADJUST. TRIP DELAY SENSING DELAY ON STARTUP CONNECT. If you don't find the part you need, call us for a custom product 800-843-8848 © 2016 Littelfuse Protection Relays & Controls www.littelfuse.com/ecsw

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Llttelfuse* Expertise Applied | Answers Delivered Protection Relays Current Monitoring Relays and Transducers trip delay, the relay transfers to fault condition state. If the current returns to normal levels (inside the window) during the trip delay, the red LED goes OFF, the trip delay is reset, and the output remains in the normal condition. Reset: Remove input voltage or open latch switch. If zero current detection is selected, the unit will reset as soon as zero current is detected. Operation With Zero Current Detection Enabled: If the current decreases to zero within the trip delay...

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Llttelfuse* Expertise Applied | Answers Delivered Protection Relays Current Monitoring Relays and Transducers Specifications Sensor Type Mode Trip Point Range Tolerance Maximum Allowable Current Time Point vs Temp. & Voltage Response Time Frequency Type of Detection Zero Current Detection Time Delay Range Tolerance Sensing Delay On Start Up Tolerance Delay vs. Temp. & Voltage Input Voltage Tolerance 12VDC & 24VDC/AC 120 & 230VAC AC Line Frequency Output Type Mode: Switch Selectable ON OFF Form Rating Life Latch Type Reset Function Protection Surge Circuitry Isolation Voltage Insulation...

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