ABB 1HSB495663-1 - SF6 Gas Density Monitor (Density Gauge)

The ABB 1HSB495663-1 belongs to ABB's 1HSB495663 family of SF6 gas density monitors used on high-voltage switchgear, where they continuously track the density of SF6 insulating gas to protect breakers, load switches and gas-insulated equipment. Distributor catalogs list the -1, -2 and -3 variants of the family under customs tariff number 90262080 (pressure measuring instruments), confirming the function as a density gauge / density relay. The unit is supplied as new ABB spare stock with unit-order quantity. Buyers should confirm the specific alarm/contact configuration of the -1 variant against the nameplate or ABB ordering documentation before ordering.