Littelfuse
KRDS221
1 / 1
Description
Operation (Single Shot) Input voltage must be applied before and during timing. Upon momentary or maintained closure of the initiate switch, the output relay energizes for a measured interval of time. At the end of the delay, the output de-energizes. Opening or reclosing the initiate switch during timing has no affect on the time delay. The output will energize if the initiate switch is closed when input voltage is applied. Reset: Reset occurs when the time delay is complete and the initiate switch is opened. Loss of input voltage resets the time delay and output.- Part Number
- KRDS221
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Specifications
- Input Voltage (V)
- 24VAC/DC
- Input Tolerance (%)
- -15% - 20%
- Input AC Line Frequency (Hz)
- 50/60Hz
- Input DC Ripple (%)
- ≤10%
- Output Type
- Isolated relay contacts
- Output Form
- SPDT
- Output Load Rating (VA)
- 10A resistive @ 125; 5A resistive @ 230VAC and 28VDC; 1/4hp @ 125VAC
- Time Delay Type
- Microcontroller with watchdog circuitry
- Time Delay Range
- 1 - 100s onboard adjustable
- Time Delay Tolerance (%)
- ≤±5%
- Reset Time (ms)
- ≤150ms
- Initiate Time (ms)
- ≤40ms
- Repeat Accuracy (%)
- ±0.5% or 20ms whichever is greater
- Setpoint vs Ambient Temperature and Operating Voltage (%)
- ≤ ±5%
- Insulation Resistance
- ≥100 MΩ
- Isolation Voltage (V)
- ≥1500V RMS input to output
- Circuitry
- Encapsulated
- Polarity
- DC units are reverse polarity protected
- Life
- Mechanical - 1 x 107; Electrical - 1 x 105
- Power Consumption
- AC: ≤2VA; DC: ≤2W
- Termination Type
- 0.25 in. (6.35mm) male quick connect terminals
- Mounting Method
- Surface mount with one #10 (M5 x 0.8) screw
- Operating Temperature
- -40° to 60°C (-40°F to 140°F)
- Storage Temperature (F/C)
- -40° to 85°C (-40°F to 185°F)
- Humidity
- 95% relative non-condensing
- Dimensions
- 2.00 x 2.00 x 1.21 in. (50.8 x 50.8 x 30.7mm)
- Weight (lbs/g)
- ≅2.6oz (74g)
- Sample capable
- No
Documents
Data Sheet
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