This is a high - quality pressure switch with model RT19S. It has a wide range of application parameters for your reference. Pressure - related Parameters: The adjustment range of pressure (Pe) is from 5 bar (72.5 psig) to 25 bar (362.6 psig), which allows for flexible settings according to different needs. The hysteresis is 1 bar (14.5 psi), ensuring stable operation. The maximum test pressure (Pe) reaches 47 bar (682 psig), and the highest working pressure is 42 bar (610 psig), indicating its high - pressure - resistant performance. The pressure connection size is 1/2, with the connection type of G and the standard of ISO 228 - 1. The pressure connection is external thread, and the pressure sensing element is a bellows. The burst pressure is 63 bar, providing a certain safety margin. Environmental Parameters: The enclosure protection class is IP66, which means it has a good protection against dust and water ingress. The fluid group is 1. The ambient temperature range is from - 40 °C (- 40 °F) to 70 °C (158 °F), suitable for a variety of working environments. Electrical Parameters: The electrical specification standard complies with EN 60947 - 4/-5. The electrical connection is a cable thread connection with a size of 2xPg 13.5 and an internal thread connection form, following the DIN 40430 standard. For 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 / stranded wires (0.2 - 2.5 mm²). The electrical insulation is 400V, the pollution degree is 3, the rated impulse voltage is 4 kV, and the short - circuit protection is provided 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. Other Features: The contact system is repairable, and it is included in the catalog IV.