Frequently asked questions
The breaking capacity and operating time of the Acti9 iMX+OF shunt trip release module (Ref: A9A26946).
FAQ000278670
04 December 2025
Issue:
What is the breaking capacity and operating time of the Acti9 iMX+OF shunt trip release module (Ref: A9A26946)?
Product Line:
Acti9 iMX+OF Auxiliary Trip Units
Environment:
Used with Acti9 circuit breakers (e.g., iC60, iC65) for remote tripping applications.
Resolution:
Breaking Capacity:
The A9A26946 module does not have its own breaking capacity because it is not a circuit breaker. It operates in conjunction with the associated protection device (e.g., Acti9 iC60/iC65), which determines the system’s breaking capacity.
Operating Time:
• Depends on the control voltage applied.
• For a sudden voltage application (0 → 100% of Un), the iMX operating time can be <10 ms.
• Combined with the associated circuit breaker, the total power circuit breaking time can be approximately <18 ms.
For detailed specifications, refer to Global Module CA908029E.