Product guide
Acti9 auxiliary contacts let a circuit breaker send a signal to an alarm, a panel light or a PLC. They clip on the side of the breaker and are only 9mm wide, so they take very little space. The series has several types. The iOF contact shows if the breaker is open or closed. The iSD contact signals that the breaker tripped because of a fault. The combined iOF/SD+OF models give both signals in one unit, with 2 changeover contacts. Standard versions work from 100mA to 6A at 24 to 415V AC and 24 to 130V DC. Low current versions work from 2mA to 100mA and suit PLC inputs. Choosing the right type matters, because a wrong choice can give weak or unreliable signals.
Q1: What is the difference between iOF and iSD?
iOF shows the position. iSD shows a fault trip.
Q2: Which one should I use for PLC inputs?
The low current versions, 2mA to 100mA.
Q3: Can one breaker have two contacts?
Yes. Use a combined iOF/SD+OF model.
Q4: What does 1 C/O mean?
One changeover contact that can work as normally open or normally closed.
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