IS:02959 - 1975 (with amendment nos.1,2 & 4); Specification for contactors for voltages not exceeding 1000 V AC or 1200V DC

IS:02959 - 1975 (with amendment nos.1,2 & 4); Specification for contactors for voltages not exceeding 1000 V AC or 1200V DC - New Delhi BIS 1975 - 36+3p

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