Baldor Electric Motors is no longer manufacturing this motor, possible replacement is the following Baldor Electric Motors part#
EM25454T-4
*** This motor has been replaced by model # EM25454T-4 ***
M25454T-4, 450 Hp, 1800 Rpm, 449T FR, 230/460 Vac, 3 PH, ODP, Foot Mounted, General Purpose Motor