The 836T-T254E switch from Allen-Bradley is a pressure control switch from the Allen-Bradley/Rockwell Automation 836 pressure controls series industrial switch. This switch weighs approximately 8.6 kilograms. The 836T-T254E pressure control switch is a T-Style pressure control switch. The contact block that this switch comes with is a 2-circuit contact block. Its protective enclosure is a Type 7 & 9 and Type 4 & 13 enclosure. It has 2 pressure ranges which are known as the adjustable differential range and the adjustable operational range. The adjustable differential pressure range runs from 6 PSI to 30 PSI and the adjustable operational pressure range runs from 12 PSI to 150 PSI. The maximum PSI rating for the 836T-T254E pressure control switch is 350 PSI, and its maximum line pressure rating is 450 PSI.

When the Allen-Bradley/Rockwell Automation 836T-T254E pressure control switch ships, it comes with its adjustable differential range at the lowest possible setting and its adjustable operating range at the highest possible setting by default, and the operators can adjust these settings according to their application needs. The bellows in the 836T-T254E pressure control switch are made of copper alloy and they can withstand exposure to moderate amounts of dust, water, oil, and certain kinds of chemicals that are not corrosive to copper alloy. Some of the additional features of the 836T-T254E switch are a pilot light, a range locking cap, and a mini receptacle that has 5 pins. The enclosure that it comes with also includes a special gasket and an O-ring seal that are designed to keep dust and different kinds of fluids out of the switch.