KRDB421 - KRDB Series

系列: KRDB
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The KRDB 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 KRDB Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life.


工作(断开延迟)
必须在计时之前和计时期间施加输入电压。 Upon closure of the initiate switch, the output relay energizes. The time delay begins when the initiate switch is opened. 输出在计时期间保持通电。 时间延迟结束时,输出断电。 当施加输入电压时,如果启动开关闭合,输出将通电。
重置: 在计时过程中重新闭合启动开关会复位时间延迟。 丢失输入电压会复位时间延迟和输出。

参数 (将鼠标移到目标文字上面可显示详情) 数值
Input Voltage (V) 120 V ac
Input Tolerance (%) -20% - 10%
Input AC Line Frequency (Hz) 50/60
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 Type Microcontroller with watchdog circuitry
Time Delay Range 1 - 100 s onboard adjustable
Time Delay Tolerance (%) ±5%
Reset Time (ms) ≤150
Initiate Time (ms) ≤40
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
Circuitry Encapsulated
Life Electrical: 1 x 10⁵; Mechanical: 1 x 10⁷
Power Consumption ≤2 VA
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 -40° to 60°C (-40° 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)
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