Temperature Sensor Selection Guide
Consult this guide to determine which Littelfuse thermistor, RTD, digital temperature indicator, or probe will work best in your application.
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ORS120A150SD
TIME DELAY RELAY | Series: ORSThe ORS Series’ open PCB construction offers the user good economy without sacrificing performance and reliability. The output relay is available in isolated, 10A, DPDT or SPDT forms. The time delay may be ordered as factory fixed, onboard knob, or external adjustment. All connections are 0.25 in. (6.35 mm) male quick connect terminals.
Operation (Single Shot)
Input voltage must be applied before and during timing. Upon momentary or maintained closure of the initiate switch (leading edge triggered), the output relay energizes for a measured interval of time. At the end of the time 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) | 120 A |
Output Form | Isolated DPDT |
Time Delay Range (s) | 50 s fixed |
Initiate Time | ≤70 |
Input AC Line Frequency (Hz) | 50/60 |
Input Tolerance (%) | -20% - 10% |
Isolation Voltage | ≥1500 Vrms input to output |
Life | Electrical: 1 x 10⁶; Mechanical: 1 x 10⁷ |
Mounting Method | Surface mount with 1 #10 (M5 x 0.8) screw |
Operating Temperature Max (°C) | 65 |
Operating Temperature Maximum Fahrenheit | 149 |
Operating Temperature Min (°C) | -20 |
Operating Temperature Minimum Fahrenheit | -4 |
Output Load Rating (VA) | 10 A resistive @ 120/240 V ac and 28 V dc; 1/3 hp @ 230 V ac |
Output Type | Electromechanical relay |
Power Consumption | 2.25 W |
Repeat Accuracy (%) | ±0.2% or 20 ms whichever is greater |
Reset Time (ms) | ≤50 |
Setpoint vs. Ambient Temperature and Operating Voltage | ≤±10% |
Termination Type | 0.25 in. (6.35 mm) male quick connect terminals |
Time Delay Tolerance (%) | ±10% |
Time Delay Type | Analog |
ORS120A150SD Resources
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| Part Number | Part Description | RoHS | Pb-Free | RoHS (2015/863/EU) Certificate | REACH (SVHCs) Declaration | REACH (SVHCs) | Halogen Free | IPC-Material Declaration | |
|---|---|---|---|---|---|---|---|---|---|
| ORS120A150SD | TIME DELAY RELAY | View More |
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