supply of shunting mode operation switch (hsm) similar to zcpa program switch as per clw spec. no.: clw/es/s-1/za, model no.: 250-2yw-005w of m/s. siemens make. note:-1. hsm switch program should be all contact closed at zero position & open at 1 position as per modification 0492 circuit diagram. 2. on switch plate hsm name & 0, 1 marking should be written. 3. item should be purchased from clw approved source or their authorized dealer. 4. one sample should be got approved before the bulk supply.shunting mode operation switch (hsm) similar to zcpa program switch as per clw spec. no.: clw/es/s-1/za, model no.: 250-2yw-005w of m/s. siemens make. note:-1. hsm switch program should be all contact closed at zero position & open at 1 position as per modification 0492 circuit diagram. 2. on switch plate hsm name & 0, 1 marking should be written. 3. item should be purchased from clw approved source or their authorized dealer. 4. one sample should be got approved before the bulk supply.,shunting mode operation switch (hsm) similar to zcpa program switch as per clw spec. no. : clw/es/s-1/za, model no.: 250-2yw-005w of m/s. siemens make. note:-1. hsm switch program should be all contact closed at zero position & open at 1 position as per modification 0492 circuit diagram. 2. on switc h plate hsm name & 0, 1 marking should be written. 3. item should be purchased from clw approved sour ce or their authorized dealer. 4. one sample should be got approved before the bulk supply. [ warranty p eriod: 30 months after the date of delivery ] ]