This is a high - quality pressure switch with model RT112W. It is designed to meet a wide range of industrial and commercial requirements. Pressure - related Parameters The maximum test pressure (Pe) of this pressure switch is 8 bar (equivalent to 116 psig), and the highest working pressure is 7 bar (100 psig). The pressure connection type is G, with a connection size of 1/2, and the connection standard follows ISO 228 - 1. The pressure male/female end is external thread, and the pressure sensing element is a bellows. The adjustable range of pressure (Pe) is from 0.1 bar (1.5 psig) to 1.1 bar (16 psig), and the hysteresis is 0.07 bar (1 psi). Mechanical and Environmental Parameters The enclosure protection class is IP66, which provides excellent protection against dust and water ingress. The fluid group is 1. The burst pressure is 28 bar, ensuring high - strength and reliability under extreme conditions. The ambient temperature range is from - 40 °C (- 40 °F) to 70 °C (158 °F), making it suitable for use in various harsh environments. Electrical Parameters The electrical specification standard complies with EN 60947 - 4/-5. The electrical connection is a cable threaded connection, with a size of 2xPg 13.5 and an internal thread connection form. The electrical connection standard follows DIN 40430. Regarding the EN 60947 wiring properties, it supports flexible wires with ferrules (0.2 - 1.5 mm²), flexible wires without ferrules (0.2 - 2.5 mm²), and solid or stranded wires (0.2 - 2.5 mm²). The electrical insulation property can reach 400V, the pollution degree is 3, the rated impulse voltage is 4 kV, and the short - circuit protection is achieved by a 10A fuse. The contact function is SPDT. The contact capacity is as follows: 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 a reliable and versatile product that can be widely used in different systems that require precise pressure control and monitoring. It is also listed in Catalog IV. In addition, the contact system is repairable, which provides convenience for maintenance and reduces the overall cost of use.