Opto coupler Opto1-03

The optocoupler Opto1-03 is applied for an effective protection of signal lines of e.g. PLC control systems against overvoltages and interferences. This is achieved through the galvanic isolation of the signals at the integrated optocouplers.
These unallowable overvoltages can arise from wiring errors.
Also inappropriate measurements in a not de-energized state of the control system can lead to overvoltages at the input terminals of the PLC. A common cable routing of high voltage lines and PLC control lines, with poor or damaged insulation can as well lead to interferences or destroy the input circuitry of the PLC.
Because of the integrated power supply this quadruple optocoupler has very small dimensions, compared to 4 single optocouplers with external power supplies. All necessary interconnections, like the looping through of the voltage supply, are already realized. This reduces the expenditure of wiring.