This is a high - performance pressure switch named RT1A. Pressure - related Parameters The maximum test pressure [bar] Pe is 25 bar, and in pounds per square inch gauge (psig), it is 363 psig. The highest working pressure is 22 bar (320 psig). The adjustment range [bar] Pe varies from -0.8 bar to 5 bar, and in pounds per square inch gauge, it ranges from approximately -11.6 psi (equivalent to -0.8 bar converted) to 72.5 psig. The hysteresis is between 0.5 bar and 0.65 bar, which is equivalent to 7.3 psi - 9.4 psi. The pressure connection size is 3/8, with the pressure connection type being "G" and the pressure connection standard following ISO 228 - 1. The pressure connection requires attention to welding reducing pipe 6.5/D10mm. The pressure sensing element is a bellows, and the pressure male/female end is external thread. Mechanical and Safety - related Parameters The enclosure protection class IP is IP66, which provides excellent protection against dust and water ingress. The burst pressure [bar] is 88 bar, ensuring high - pressure resistance. Environmental Parameters The environmental temperature range is from -50 °C (-58 °F) to 70 °C (158 °F), making it suitable for a wide variety of working environments. Electrical Parameters The electrical specification standard follows EN 60947 - 4/-5. The electrical connection is a cable threaded connection with a size of 2xPg 13.5. The electrical connection form (male/female end) is internal thread, and the electrical connection standard is DIN 40430. Regarding EN 60947 wiring properties, it supports flexible wires with ferrules for 0.2 - 1.5 mm², flexible wires without ferrules for 0.2 - 2.5 mm², and solid or stranded wires for 0.2 - 2.5 mm². In terms of EN 60947 electrical properties, the insulation is rated for 400V, the pollution degree is 3, the rated impulse voltage is 4 kV, and the short - circuit protection uses a 10A fuse. The contact function is SPDT (Single Pole Double Throw). The contact capacity includes AC15 = 3 A, 400 V; AC1 = 10 A, 400 V; AC3 = 4 A, 400 V; DC13 = 12 W, 220 V; LR = 28 A, 400 V. This pressure switch is highly reliable and suitable for various industrial applications that require precise pressure control and switching operations.