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HDS hydraulic relay HDS 6.5 A The HDS hydraulic relay provides protection against low water levels for booster units and single-phase surface pumps from 2.5 to 6.5 A
HDS hydraulic relay HDS 6.5 A The HDS hydraulic relay provides protection against low water levels for booster units and single-phase surface pumps from 2.5 to 6.5 A