ERDI436 - ERDI Series

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Littlefuse Interval Relays
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The ERD Series is a combination of digital electronics and an electromechanical relay. DPDT relay output for relay logic circuits, and isolation of input to output voltages. For applications, such as interval on, pulse shaping, minimum run time, etc. The ERD Series is encapsulated to protect the circuitry from shock, vibration and humidity.


Operation (Interval)
Upon application of input voltage, time delay begins, and output relay energizes. At the end of time delay, output de-energizes until input voltage is removed.
Reset: Removing input voltage resets the time delay and the output.

Property (Mouseover for details) Value
Input Voltage (V) 120VAC
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50/60Hz
Output Type Isolated relay contacts
Output Form DPDT
Output Load Rating (VA) 10A resistive @ 120/240VAC and 28VDC; 1/3hp @ 120/240VAC
Time Delay Type Digital integrated circuitry
Time Delay Range 0.6s - 60s adjustable
Time Delay Tolerance (%) ≤±10%
Reset Time (ms) ≤150ms
Adjustment Type External adjust
Repeat Accuracy (%) ±0.5%
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤ ±2%
Insulation Resistance ≥100 MΩ
Isolation Voltage (V) ≥1500V RMS input to output
Life Mechanical - 1 x 107; Electrical - 1 x 106
Termination Type 0.25 in. (6.35mm) male quick connect terminals
Mounting Method Surface mount with two #6 (M3.5 x 0.6) screws
Operating Temperature -40° to 65°C (-40°F to 149°F)
Storage Temperature (F/C) -40° to 85°C (-40°F to 185°F)
Dimensions 3.50 x 2.50 x 1.75 in. (88.9 x 63.5 x 44.5 mm)
Weight (lbs/g) ≅5.7oz (162g)
Sample capable No