Description
The Supco SLP0520 is a single-pole, single-throw (SPST) low pressure switch engineered for dependable pressure-drop protection in refrigeration and HVAC systems. Designed to open on a pressure drop, this switch automatically interrupts the circuit when system pressure falls to the cut-out threshold, helping prevent compressor damage and system failures caused by low refrigerant charge or other pressure-related faults.
Key Specifications
- Cut-Out (Open) Pressure: 5 PSI
- Cut-In (Close) Pressure: 20 PSI
- Switch Action: Opens on pressure drop (low pressure protection)
- Switch Type: SPST (Single-Pole, Single-Throw)
- Brand: Supco
- SKU / Part Number: SLP0520
How It Works
The SLP0520 monitors system pressure continuously. When pressure drops to 5 PSI, the switch opens, breaking the control circuit and shutting down the system to prevent damage. Once pressure recovers to 20 PSI, the switch closes and allows normal operation to resume. The 15 PSI differential between cut-out and cut-in helps prevent rapid cycling and ensures stable system operation.
Applications
- Refrigeration system low-side pressure protection
- Air conditioning compressor safeguard circuits
- HVAC control panels requiring low pressure cutoff
- OEM and field replacement applications
Why Choose the Supco SLP0520?
Supco is a trusted name in HVAC/R replacement components, and the SLP0520 delivers reliable, repeatable switching performance. Its open-on-pressure-drop design provides a critical layer of protection for compressors and refrigeration circuits, making it an essential component for service technicians and OEM applications alike.
Reviews
There are no reviews yet.