supply of plc spares , plc spares , belt sway switch, type - sw-4028t22 ( make - jayashree electrodevices pvt. ltd. ) or equivalent, field mounting type, contact – 2 no + 2nc, voltage rating – 230 / 240 v ac, current rating – 10 a, 50 hz, switch action – auto / spring reset. additional information: - enclosure - weather proof with terminal block, ip-66, material - die cast aluminium, ball / bush bearing for roller & cam shaft, epoxy painted. , non contact type, keypad operated, microprocessor / microcontroller based digital zero speed switch with dc proximity switch / probe for under speed monitoring. each zss unit should consist of monitoring unit & sensor probe. contact – 2 no + 2nc, voltage rating – 110 / 240 v ac, current rating – 5 / 10 a, 50 hz. additional information: - range of rpm: - 0 to 1000 rpm or 0 to 5000 rpm. initial bypass timer – 0 to 60 second. nuisance trip delay timer – 0 to 30 second, digital speed display, protection class - ip 65. specification for sensor probe: - sensor probe size – m30 ( dia – 30 mm, length – 65 mm ) , power supply - 05 / 12 v, protection – ip67. type – inductive type ( npn ) with 02 meter length 3 core pvc cable. sensing distance – 10 to 15 mm status indication – led protection – ip 67. protection from: - transients / overload / false pulse / incorrect polarity / short circuit / voltage spike. , dc proximity switch / probe for under speed monitoring, model - sp12b30x-65 ( make - jayashree electrodevices pvt. ltd. ) or equivalent, size – m30 ( dia – 30 mm, length – 65 mm ) , cable length – 02 meter, sensing distance / range – 10 to 15 mm, power supply – 05 / 12 v, additional information: - type – inductive type ( npn ) with 02 meter length 3 core pvc cable. status indication – led. protection – ip 67.