1502ft would be the MFRA set before departure on the Baro mins for Cork so that was definitely what you saw.
If NADP2 then that would be the standard acceleration height or in case of engine failure it would also be.
Thrust reduction occurs at 1500ft AGL irrespective of the NADP procedure in use presuming your 737NG belonged to who I think it did.
Another possibility for a high baro setting would be a NPA, Circling Approach or visual approach (land altitude plus 500ft is set).