Low Pressure High Pressure Switch

24v 120v 240vac 50 60hz 6rla 36lra.

Low pressure high pressure switch.

The switch may be designed to make contact either on pressure rise or on pressure fall. Four seasons 20916 high cut out pressure switch. Kp pressure switches are for use in refrigeration and air conditioning systems to give protection against excessively low suction pressure or excessively high discharge pressure. These pressure switches are durable reliable electromechanical gauge pressure on off switches that are available with either single pole single throw spst normally open or normally closed circuitry or single pole double throw spdt circuitry.

Medium pressure me series. 4 3 out of 5 stars 26. 10 pcs master box. Lefoo lf08ps low high pressure switch 10 40psi used in air condition refrigeration water oil lubricant.

Low pressure switch open on pressure drop closes on pressure rise. The high pressure switch monitors the system for an inoperative outdoor motor and or a dirty restricted condenser outdoor coil. The honeywell pressure switch portfolio consists of. The switches are also used for starting and stopping refrigeration compressors and fans on air cooled condensers kp pressure switches are available in ip 30 and ip 44.

Relay contacts cr2 will break the switching circuit. Free shipping on your first order shipped by amazon. 3 9 out of 5 stars 5. The low pressure switch monitors the refrigeration system for a loss of refrigerant.

Standard high low pressure switch are for 0 100 psi the standard setting is 40 60 psi. When a refrigeration system operates at lower than normal pressures the system can freeze up with the freezing beginning at the evaporator coil. High pressure hp and he series. Low pressure lp and le series.

As pressure falls the high switch will break but this has no effect on the switching circuit. A pressure switch is a form of switch that operates an electrical contact when a certain set fluid pressure has been reached on its input. A high pressure switch hps and a low pressure switch lps are protective devices for the compressor and refrigeration circuit. They are often used in pump and hydraulic power applications.

Switches are single pole double throw spdt so they switch one circuit on or off. Pressure switches are widely used in industry to automatically supervise and control systems that use pressurized fluids. 1 4 female sae mounting. The relay locks in electrically through contacts cr1 and the low pressure switch.

They can be wired normally open no or normally closed nc. The pressure switch comes is to be installed imidiately downstream of the mainline source valve per nfpa 99 and are to be wired as normally closed on all circuts. High pressure switch open on pressure rise closes on pressure drop. As pressure rises further the high pressure switch will close energizing the coil of relay cr.