For 3-phase volt. with n cond. reversible phase sequence phase failure 3x 160 to 690 V AC 50 to 60 HZ under and ocervolt. 160-690 v hysteresis 1-20 v eACh 0-20s for umin and umax 1 w for rpm 1 w for umax screw terminal follow-on product for 3ug3042-1bp50