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KRDS221
2X2 SINGLE SHOT W/RELAY | Series: KRDS
The KRDS Series is a compact time delay relay measuring only 2 in. (50.8 mm) square. Its microcontroller timing circuit provides excellent repeat accuracy and stability. Encapsulation protects against shock, vibration, and humidity. The KRDS Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life.
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.
| Property | Value |
|---|---|
Input Voltage (V) | 24 V ac/dc |
Output Form | SPDT |
Time Delay Range (s) | 1 - 100 s onboard adjustable |
Dimensions | 2 H x 2 W in. (50.8 x 50.8 mm) |
Circuitry | Encapsulated |
Humidity | 95% relative : non-condensing |
Initiate Time | ≤40 |
Input AC Line Frequency (Hz) | 50/60 |
Input DC Ripple | ≤10% |
Input Tolerance (%) | -15% - 20% |
Insulation Resistance (Ω) | ≥100 |
Isolation Voltage | ≥1500 Vrms input to output |
Life | Electrical: 1 x 10⁵; Mechanical: 1 x 10⁷ |
Mounting Method | Surface mount with 1 #10 (M5 x 0.8) screw |
Operating Temperature Max (°C) | 60 |
Operating Temperature Maximum Fahrenheit | 140 |
Operating Temperature Minimum Celsius | -40 |
Operating Temperature Minimum Fahrenheit | -40 |
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 |
Output Type | Isolated relay contacts |
Polarity | DC units are reverse polarity protected |
Power Consumption | AC: ≤2 VA; DC: ≤2 W |
Repeat Accuracy (%) | ±0.5% or 20 ms whichever is greater |
Reset Time (ms) | ≤150 |
Setpoint vs. Ambient Temperature and Operating Voltage | ≤±5% |
Storage Temperature Maximum Celsius | 85 |
Storage Temperature Maximum Fahrenheit | 185 |
Storage Temperature Minimum Celsius | -40 |
Storage Temperature Minimum Fahrenheit | -40 |
Termination Type | 0.25 in. (6.35 mm) male quick connect terminals |
Time Delay Tolerance (%) | ≤±5% |
Time Delay Type | Microcontroller with watchdog circuitry |
KRDS221 Resources
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| Part Number | Part Description | RoHS | Pb-Free | RoHS (2015/863/EU) Certificate | REACH (SVHC's) Declaration | REACH (SVHC's) | Halogen Free | IPC-Material Declaration | |
|---|---|---|---|---|---|---|---|---|---|
| KRDS221 | 2X2 SINGLE SHOT W/RELAY | View More |
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