You will find that the 8T2T-CA number is listed in the manual for quick reference.
TELEMECANIQUE LT2-SC00F Thermal Tripping Relay 110/127V 50/60 HZ
You will find that it has the Brown Boveri Electric Inc. branding, which I think to the part.
A nice touch is the gentle sound on the ARD4UR model, and you will find that it helps confirm operation during tests.
The ABB brand on this relay is clear, and it feels solid when you hold it.
You get a steady feel with the Model 700-P400A1, and the connections line up just right.
What stands out about the Allen-Bradley brand is the solid reputation behind the product.