supply of rotary switchrotary switch,supply of 4 pole, 6 way,240 v a.c., 50 hz, 200 a capacity rotary switch (special mode selecto r switch) suitable and retrofittable into existing 25kva(200aapacity) suntron make cls panel. it shall be of f lush type. the contacts shall be of robust design and have required cross-section for carrying continuously 200a for 25 kva at and be of positive make type to avoid any sparking. the rotary switch shall be enclose d with a transparent cover to prevent accidental/ inadvertent/ interference to circuit. the selector switch sh all have the following six positions: - (xiii) off (xiv) main supply (xv) standby one supply (xvi) standby two s upply (xvii) off (xviii) auto it shall conform to is 13947/part5/sec.1 of 1993 & is/iec 60947-3 (1999): make: jaibalaji, salzer, select, l&t , abb, c&s, schneider, siemens or similar [ warranty period: 30 months after the date of delivery ] ]