procurement of multi functional monitoring relay etc., multi functional monitoring relay 3 phase, 3 wire / 4 wire with adjustable thresholdes, adjustable triping delay, monitoring of phase sequence and phase failure, voltage monitoring ( under and over voltage ) , installation 35 mm din rail conforming to standard en 60255-6, rated supply voltage 280-520v ac with self extinguishing properties as per rdso specificatin no. rdso / pe / spec / ac / 0184-2015 ( rev.- 1 ) & rdso letter no. el / 7.1.108 / mssbc, dtd. 17 / 09 / 2021 to abb model no. cm-mps, 41s or carlo gavazzi model no. dpc01dm48.400 / 480 or siemens model no. 7ugo818-1ca20 or schneider model no. rm22tr33 or dold model no. bd 9080.12 or phonex model no. mr- es-3 v-400 ( 1217805 ) or l&t model no. mg53bh. [ warranty period: 30 months after the date of delivery ]