Supco SHP450250 High Pressure Switch, 450 PSI Cut-Out, 250 PSI Cut-In, SPST

Description

Supco SHP450250 High Pressure Switch Overview

The Supco SHP450250 is a single-pole, single-throw (SPST) high pressure switch engineered to protect refrigeration and HVAC systems from dangerous over-pressure conditions. Designed to open on pressure rise, this switch automatically interrupts the circuit when system pressure reaches the 450 PSI cut-out set point, and resets by closing the circuit once pressure drops back to the 250 PSI cut-in set point. Its reliable pressure-sensing action makes it an essential safety component in commercial and residential refrigeration systems, air conditioning equipment, and heat pump applications.

Key Features

• Cut-Out (Open) Pressure: 450 PSI — opens circuit to protect system on high-pressure rise
• Cut-In (Close) Pressure: 250 PSI — closes circuit to resume normal operation once pressure drops
• Switch Action: Open on Pressure Rise (SPST — Single Pole, Single Throw)
• Designed for use as a high-side safety control in refrigeration and air conditioning systems
• Durable construction for long-term reliability in demanding HVAC/R environments
• Direct replacement for compatible OEM high pressure switch applications

Application

The SHP450250 is ideal for use in commercial refrigeration units, residential and light commercial air conditioners, and heat pump systems where high-side pressure monitoring is critical. It provides an automatic safety shutoff to prevent compressor and system damage caused by excessive refrigerant pressure.

Specifications

• Brand: Supco
• SKU: SHP450250
• Cut-Out Pressure: 450 PSI (Open)
• Cut-In Pressure: 250 PSI (Close)
• Switch Type: SPST (Single Pole, Single Throw)
• Action: Open on Pressure Rise
• Application: High Pressure Safety Switch