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 Built-in toroidal current sensing Eliminates need to install stand alone current transformer and provides isolation from monitored circuit Encapsulated Protects against shock, vibration, and humidity LED indication Visual indication for trip point adjustment and fault indication Multiple switch selectable features User selectable zero current detection, latched, normally de-energized, or energized output adds application flexibility Adjustable trip delay Eliminates nuisance tripping and prevents rapid cycling Isolated 10A, SPDT output contacts Allows control of loads for AC or DC voltages Specifications Sensor Type Toroid, through hole wiring for up to #4 AWG (21.1 mm2 ) THHN wire Mode Over & undercurrent trip points (window current sensing) Trip Point Range 0.5 - 50A in 3 adjustable ranges Tolerance Guaranteed range Maximum Allowable Current Steady - 50A turns; Inrush - 300A turns for 10s Time Point vs Temp. & Voltage ±5% Response Time ≤ 75ms Frequency 45/500 Hz Type of Detection Peak detection Zero Current Detection < 250mA turns typical Trip Delay Range 0.15 - 50s in 2 adjustable ranges or 0.1 - 50s fixed Tolerance Adjustable: guaranteed range; Fixed: ±10% Sensing Delay On Start Up Fixed ≅ 0.1 - 6s in 1s increments Tolerance +40% -0% Delay vs. Temp. & Voltage ±15% Input Voltage 24, 120, or 230VAC; 12 or 24VDC Tolerance 12VDC & 24VDC/AC: -15% - 20%120 & 230VAC: -20% - 10% AC Line Frequency 50/60 Hz Output Type Electromechanical relay Mode: Switch Selectable ON: Energized during normal operation, de-energized after a faultOFF: De-energized during normal operation, energizes during a fault Form Isolated, SPDT Rating 10A resistive @ 240VAC; 1/4 hp @ 125VAC;1/2 hp @ 250VAC Life Mechanical - 1 x 106 ; Electrical - 1 x 105 Type Electrical Reset Remove input voltage Function Switch selectable latching function Protection Surge IEEE C62.41-1991 Level A Circuitry Encapsulated Isolation Voltage ≥ 2500V RMS input to output Insulation Resistance ≥ 100 MΩ Mechanical Mounting Surface mount with two #6 (M3.5 x 0.6) screws Dimensions H 88.9 mm (3.5”); W 63.5 mm (2.5”);D 44.5 mm (1.75”) Termination 0.197 in. (5 mm) terminal blocks for up to #12(3.2 mm2) AWG wire Environmental Operating/Storage Temperature -40° to 60°C / -40° to 85°C Humidity 95% relative, non-condensing Weight ≅ 6.4 oz (181 g)
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