High Pressure Limit Switch

In the case of a heat pump in cooling mode the high pressure switch is used to make sure that outdoor unit can reject heat with the outside air.

High pressure limit switch.

Designed for high pressure applications these switches electrically activate automated controls or alarms when a set pressure is reached. They are often used in pump and hydraulic power applications. Shorter and thinner than other safety limit switches these are sized to fit tight spaces. However they are commonly found on heat pumps.

Switches are single pole double throw spdt so they switch one circuit on or off. Rated ip69k these switches can withstand high pressure high temperature washdowns and temporary submersion. High and low pressure switches may be installed on the refrigerant tubing of some air conditioning systems. Limit switch is a switch operated by the motion of a machine part or presence of an object they are used for control of a machine as safety interlocks or to count objects passing a point.

This pressure will be based on specifications for maximum pressure for the refrigeration systems high side and the type of refrigerant used. Standardized limit switches are industrial control components manufactured with a variety of operator types including lever roller plunger and whisker type. They can be wired normally open no or normally closed nc. It s also known as a fan limit switch or simply a limit switch.

Compact safety limit switches. The key is to protect the compressor from extremely high pressures that could damage. The high temperature limit switch is an important device used in forced air furnaces powered by gas or heating oil.