supply of 100 a protected poles: 4 pole, 18 ka mccb100 a protected poles: 4 pole, 18 ka mccb,100 a protected poles: 4 pole, 18 ka mccb, rated current (in)100a , user value rated opera tional voltage (ue ):415v / 440v ac, rated insulation voltage (uj ):440v ac, rated impulse withstand volta ge (uimp):5 ,kv, rated frequency:50 hz, rated short-circuit capacity (lcn):18 ka, instantaneous tripping cur rent: c-type, each circuit-breaker shall be marked as per is 60947.2.2003, protection type - l for overload p rotection (thermal) & i for short-circuit protection (magnetic), adjustable thermal-magnetic trip and protecti on unit, fixed magnetic settings and with toggle control. [ warranty period: 30 months after the date of d elivery ] ]