IS: 2516 (Part I/SecI)- 1965 (incorporating amendment no.1 & 2) : Specification for alternating current circuit-breakers part 1 requirements section 1 voltage not exceeding 1000volts

IS: 2516 (Part I/SecI)- 1965 (incorporating amendment no.1 & 2) : Specification for alternating current circuit-breakers part 1 requirements section 1 voltage not exceeding 1000volts - New Delhi BIS 1975 - 21p

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