133 SWITCHES PRESSURE PRESSURE SWITCHES for control circuits Subgroup 420 TECHNICAL FEATURES LP3 - Low pressure switch APPLICATIONS Pressure switch for the protection of water systems (booster sets and fire-fighting systems) and pneumatic systems (control circuits under pressure). The device interrupts the electric connection between the line and the load when the pressure decreases below the established value (stop pressure). Membrane NBR rubber nylon Double electric contact normally open, made of brass alloy with Ag-Ni surfacing Fluids controlled air, fresh water (5°C÷55°C) Protection degree IP44 Rated current 16(10)A Cable glands Included The reset is automatic when the pressure excuds the set start value again or when pressing the reset button CODE PH Setting range [bar] Factory setting [bar] Connection IT LP3 1 0,05 - 0,45 0,1 - 0,45 1/4"F IT LP3 18 1 0,5 - 2 0,5 - 0,95 1/4"F INSTALLATION In the booster set systems it is matched in series with a PM5 pressure switch in order to protect the electric pump from dry running. (see pag. 122)
RkJQdWJsaXNoZXIy MTkyODMyNw==