MPCB for ventilation fan unit 1 & 2, thermal release range ( rated current ): 2. 5- 4. 0 A, class 10, breaking capacity: 50 ka, 3 pole, rated voltage 415 V AC, 1 NO + 1 NC auxiliary contact block as per RDSO common bill of material letter no EL/ 7. 108/ MSSBC dated 17. 09. 21, make- ABB catalogue no MS 116- 4/ Legrand/ Eaton/ Schneider catalogue no GV2ME08 + GVAE11/ L & T catalogue no ST418960000/ Siemens catalogue no 3RV2011 1EA10 + 3RV2901- 1E only.