supply of direct on line starter with 2 sets of 3 pole / 4 pole contactorsdirect on line starter with 2 sets of 3 pole / 4 pole contactors,direct on line starter with 2 sets of 3 pole / 4 pole contactors (2 sets ac contactor coils, 25 a mp each), each set controlled separately by 415v. 50hz ac contactor coils. one set of contactor coil is to b e controlled by the forward direction of rotation through an inching type push button and the other set thro ugh another inching button to control the reverse direction of 7.5 hp, 3phase, 50hz, 415volts, ac motor. th ere must be electrical interlocking contact to prevent both set of contactors to close simultaneously. each of above push buttons should have one normally closed auxiliary contact and one stop push buttons are re quired. the starter shall be complete with over load, shall be wired and shall be provided with power plug and socket with locking arrangement as shown in schematic drawing no. 1736/23 and 1737/23 alt.-1. each starter is to be provided with 2 nos. power plug and sockets and 2 nos. of control plug and sockets. maxim um dimension of the starter should not excessed 280mm (b) x 360mm (l) x 162mm (t) irrespective of di mension given in drawing. material specification: is: 13947 pt.-4 sec.-1, 1993, make: bch or siemens or h avells or jeevan or schneider or l&t. [ warranty period: 30 months after the date of delivery ] ] , (i) 4 pin plug & socket, 30a, 415v, ac, 3p+e. make: - bch or havells or siemens or jeevan. (ii ) 5 pin plug & socket, 30a, 415v, ac, 3p+n+e. make: - bch or havells or siemens or jeevan. [1 set consisti ng of sl no. (i) 1 no. each & sl no. (ii) 1 no. each.] [ warranty period: 30 months after the date of deliver y ] ] , 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 othe