Supco SLP5090 Low Pressure Switch, 50 PSI Cut-Out / 90 PSI Cut-In, R410A, SPST

Description

The Supco SLP5090 is a single-pole, single-throw (SPST) low pressure switch engineered for reliable refrigerant circuit protection in R410A systems. Designed to open on pressure drop, this switch interrupts the circuit when system pressure falls to the 50 PSI cut-out threshold and automatically resets once pressure recovers to the 90 PSI cut-in set point — safeguarding compressors and refrigeration equipment from the damaging effects of low-charge or loss-of-refrigerant conditions.

Built for professional HVAC/R installation, the SLP5090 delivers dependable performance in residential and light commercial applications where R410A refrigerant is used.

Key Features

• Cut-Out (Open) Pressure: 50 PSI — opens circuit on pressure drop
• Cut-In (Close) Pressure: 90 PSI — closes circuit when pressure recovers
• Switch Action: Opens on pressure drop (low pressure protection)
• Switch Configuration: SPST (Single-Pole, Single-Throw)
• Refrigerant Compatibility: R410A application
• Function: Low pressure switch for compressor and system protection

Application

• R410A residential and light commercial air conditioning systems
• Refrigeration circuits requiring low-side pressure protection
• Compressor lockout on loss of refrigerant or low-charge conditions

Why Choose the Supco SLP5090?

Supco is a trusted name in HVAC/R components, and the SLP5090 continues that tradition with a precision-calibrated pressure switch that provides consistent, repeatable cut-out and cut-in performance. Its SPST design simplifies wiring, and its R410A-rated construction ensures compatibility with modern, environmentally compliant refrigerant systems.