Baldor Electric Motors is no longer manufacturing this motor, possible replacement is the following Baldor Electric Motors part#
EM31109
** This motor has been replaced by Model # EM31109***
(M3109) 1/2 Hp, 230/460 Vac, 3 Phase Input, 56 Frame, Open Drip Proof, 1200 Rpm, Foot Mounted, General Purpose Motor