KRDI220 - KRDI Series

Series: KRDI
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The KRDI Series is a compact time-delay relay measuring only 2 in. (50.8 mm) square. Its solid-state timing circuit provides excellent repeat accuracy and stability. Encapsulation protects against shock, vibration, and humidity. The KRDI Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life.


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

Property (Mouseover for details) Value
Input Voltage (V) 24 V ac/dc
Input Tolerance (%) -15% - 20%
Input AC Line Frequency (Hz) 50/60
Input DC Ripple (%) ≤10%
Output Type Isolated relay contacts
Output Form SPDT
Output Load Rating (VA) 10 A resistive @ 125 V ac; 5 A resistive @ 230 V ac and 28 V dc; 1/4 hp @ 125 V ac
Time Delay Range 0.1 - 10 s onboard adjustable
Time Delay Tolerance (%) ≤±5%
Reset Time (ms) ≤150
Repeat Accuracy (%) ±0.5% or 20 ms whichever is greater
Setpoint vs Ambient Temperature and Operating Voltage (%) ≤±5%
Switching Voltage Maximum (V) 250
Insulation Resistance ≥100
Isolation Voltage (V) ≥1500 Vrms input to output
Circuitry Encapsulated
Polarity DC units are reverse polarity protected
Life Electrical: 1 x 10⁵; Mechanical: 1 x 10⁷
Power Consumption AC: ≤2 VA; DC: ≤2 W
Termination Type 0.25 in. (6.35 mm) male quick connect terminals
Mounting Method Surface mount with 1 #10 (M5 x 0.8) screw
Operating Temperature -20° to 60°C (-4° to 140°F)
Storage Temperature (F/C) -40° to 85°C (-40° to 185°F)
Humidity 95% relative : non-condensing
Dimensions 2 H x 2 W in. (50.8 x 50.8 mm)
Weight (lbs/g) 0 Kg
Dimensions 2 H x 2 W in. (50.8 x 50.8 mm)
To request product environmental information, please complete the Product Environmental Information Request Form.