[TenTec] Do I have the wrong Airpax???

[OTAKEBI at aol.com]

I bought a breaker from Wards for my Corsair II.
Wards only stocks the slow blow 20 A Airpax.
So they had to order the fast blow.
I got it in the UPS today after a three week wait.
My breaker states it is a T11-1- 20.0A-01-10A-V.
I was told today via another HAM that I may have the wrong breaker.
He told me that he thinks the TT people are using  T11-1-20.0A-01-11C-V.
What is the difference?
TT told me Wards sold the right breaker.
Any information?
Thanks, Dan N4VET