Cutler Hammer Circuit Breakers

[mjc1060]

Does anyone know if a circuit breaker has a life span. Are there any requirements or recommendations about replacing these OCPD devices as they age.

 

[LarryFine]

No to both.

However, they do wear from repeated use, such as switching duty.

 

[zog]

Does anyone know if a circuit breaker has a life span. Are there any requirements or recommendations about replacing these OCPD devices as they age.

Depends on what type breaker you are talking about. I am guessing MCCB's? While there is nothing specific to age, UL 489 only requires MCCB's to be designed to interrupt a max rated fault twice, so that is something to consider.