supply of air brake direct on-line starter , air brake direct on-line starter with 2 sets of 3 pole contactor, each set control separately by 415v, 50 hz, ac contactor coils. detail follows as : 01 set of contactor coil is to be controlled by the forward direction of rotation through an inching type push button and the other set through another inching button to control the reverse direction of 5 hp, 3 phase, 50hz, 415 volts, ac motor. there must be electrical interlo cking contact to prevent both sets of contactors to close simultaneously. each of above push buttons shoul d have one normally closed auxiliary contacts and one stop push button are required. the starter shall be c omplete with over load, shall be wired and shall be provided with power plug and socket with locking arran gement as shown in schematic diagram drg. no. 1736/23 and 1737/23,alt.1 mat. specn is : 8544 (part-1), is :13947-4-sec- 1/1993. each starter is to be provided with 02 nos. power plug and socket and 2(two) nos. co ntrol plug and socket. maximum dimension 280 mm(b) x 360 mm(l) x 162 mm(t). the starters are as per is :13947-4-sec -1, 1993. make :bch or siemens or havells or jeevan or schneider or l&t. [ warranty peri od: 30 months after the date of delivery ] ]