Set of spare parts for HSM contactor as per CLW spec. no. CLW/ ES/ 3/ 0088, Alt- A as follows. 1 ) Switch Micro NO S846- I- 20, part no. HBTA420574P0001 of M/ s. Secheron Hasler India Pvt. Ltd. Or its Similar. Qty/ set. = 01 no. 2 ) Switch Micro NC S845- I- 20, part no. HBTA420574P0002 of M/ s. Secheron Hasler India Pvt. Ltd. Or its Similar. Qty/ set. = 01 no.