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Detailed Operation
Load Current Limitations
Operating
Voltage
5 to 250 VAC
5 to 250 VAC
5 to 250 VAC
5 to 30 VDC
5 to 30 VDC
5 to 30 VDC
* Assumes a 7ms L/R time constant (DC inductive load) or Cos φ > 0.4 (AC inductive load)
Suppression Circuits
Relay contact life, when switching inductive loads, will approach resistive load contact life if
suppression circuits are used. Examples of typical suppression circuits for AC and DC loads
are shown below. The 1A, 200V diode shown in the DC load typical suppression example is
an industry standard 1N4935. The resistor and capacitor shown for AC load suppression are
standard components, available from most electronics distributors.
10
Maximum Current for Load Type
Resistive
Lamp or Solenoid *
4 Amps
2 Amps
0.1 Amp
0.05 Amp
1 Amp
0.5 Amp
4 Amps
2 Amps
1 Amp
0.5 Amp
0.1 Amp
0.05 Amp
StationPortal Hardware User's Guide – February 2010
Typical Contact Life
(Number of Operations)
200,000
1,000,000
700,000
200,000
700,000
1,000,000
GFK-2522A
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