procurement of contactor 4 pole, 50 amp capacity etc., contactor 4 pole ac / dc operated ac-1 rated current 100 amp at 415v main contact arrangement 4 no, coil voltage 48-130v ac, 50 / 60 hz and dc operation 48... 130v with auxiliary contact blocks front mounting ( single pole ) ( contact description 1no-1nc ) similar abb make contactor type code reference: af52- 40-00-12 ordering code: 1sbl367201r1200 auxiliary contact block ( i ) for contact configuration ( no ) , type code reference ca4- 10 ordering code: 1sbn010110r1010 & ( ii ) for contact configuration ( nc ) , type code reference ca4-01 ordering code: 1sbn 010110r1001 conforming to iec 60947-4-1; is: 13947-4-1. [ warranty period: 30 months after the date of delivery ]