POWER CONTACTOR [ WITH DIODE ], 3 POLE 16 AMP CAP 415 V AC, COIL VOLTAGE 77- 143 VDC, WITH SURGE SUPRESSOR, WITH 1 NC AUX CONTACT, AS PER S. NO. 147, AND ITEM NO. K- 14, OF BILL OF MATERIAL OF RDSO SPEC NO. RDSO/ PE/ SPEC/ AC/ 0184- 2015, REV- 0, USED FOR COMPRESSOR MOTOR CIRCUIT OF LHB TYPE AC COACHES, CONFIRMING TO RDSO SPEC NO. RDSO/ PE/ SPEC/ AC/ 0184- 2015 REV- 0, SUITABLE FOR LHB TYPE AC COACHES SWITCH BOARD CABINET [ K- 33 ].