
Supco SLP0520 Pressure Switch
The Supco SLP0520 Low Pressure Switch is a high-precision, non-adjustable SPST safety control engineered to protect compressors from damage due to loss of charge or freeze-up conditions. Built for professional HVAC and refrigeration applications, this encapsulated pressure switch features a 5 PSI cut-out and a 20 PSI cut-in, providing a reliable automatic reset mechanism. It serves as the direct updated replacement for the legacy Supco 5731 series, ensuring seamless compatibility for technicians performing field maintenance or system overhauls.
Constructed with a snap-acting stainless steel hermetically sealed sensor, the SLP0520 offers broad refrigerant compatibility, including HFC, HCFC, CFC, and A2L refrigerants. The compact, direct-mount design utilizes a 1/4" SAE 45° female flare fitting complete with an integrated valve core depressor for rapid installation without the need for additional capillary tubes. With a 100,000-cycle rated load life and 5,000 PSI burst pressure, this low pressure cut-out switch meets the rigorous demands of commercial refrigeration and high-performance air conditioning systems.
Key Benefits for Technicians
- Universal Refrigerant Compatibility: Rated for use with modern environmental standards including A2L low-GWP refrigerants.
- Hardwired Reliability: Equipped with 18" 18 AWG lead wires for secure electrical termination in 24V, 120V, or 240V circuits.
- Durable Construction: The hermetically sealed sensor prevents environmental contamination and moisture ingress, critical for low-ambient operations.
- Direct Replacement: Specifically designed to replace Supco 5731 and similar fixed-setting low-side controls.
- Robust Electrical Ratings: Supports up to 5.8 FLA at 120VAC, providing versatile protection across various compressor sizes.
Common Questions
Is the Supco SLP0520 adjustable in the field?
No, this is a factory-set, non-adjustable switch with a fixed 5 PSI cut-out and 20 PSI cut-in to ensure consistent safety parameters and prevent tampering.
Can this switch be used on the high side of the system?
This model is specifically designed as a low pressure switch that opens on pressure drop. For head pressure control or high-pressure safety, a high-pressure cut-out switch should be selected.
What type of connection does the SLP0520 use?
It features a standard 1/4" SAE female flare fitting with a built-in depressor pin, allowing for direct mounting on a Schrader access valve.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $16.35
-65%$16.35
$5.72Supco SLP0520 Pressure Switch
The Supco SLP0520 Low Pressure Switch is a high-precision, non-adjustable SPST safety control engineered to protect compressors from damage due to loss of charge or freeze-up conditions. Built for professional HVAC and refrigeration applications, this encapsulated pressure switch features a 5 PSI cut-out and a 20 PSI cut-in, providing a reliable automatic reset mechanism. It serves as the direct updated replacement for the legacy Supco 5731 series, ensuring seamless compatibility for technicians performing field maintenance or system overhauls.
Constructed with a snap-acting stainless steel hermetically sealed sensor, the SLP0520 offers broad refrigerant compatibility, including HFC, HCFC, CFC, and A2L refrigerants. The compact, direct-mount design utilizes a 1/4" SAE 45° female flare fitting complete with an integrated valve core depressor for rapid installation without the need for additional capillary tubes. With a 100,000-cycle rated load life and 5,000 PSI burst pressure, this low pressure cut-out switch meets the rigorous demands of commercial refrigeration and high-performance air conditioning systems.
Key Benefits for Technicians
- Universal Refrigerant Compatibility: Rated for use with modern environmental standards including A2L low-GWP refrigerants.
- Hardwired Reliability: Equipped with 18" 18 AWG lead wires for secure electrical termination in 24V, 120V, or 240V circuits.
- Durable Construction: The hermetically sealed sensor prevents environmental contamination and moisture ingress, critical for low-ambient operations.
- Direct Replacement: Specifically designed to replace Supco 5731 and similar fixed-setting low-side controls.
- Robust Electrical Ratings: Supports up to 5.8 FLA at 120VAC, providing versatile protection across various compressor sizes.
Common Questions
Is the Supco SLP0520 adjustable in the field?
No, this is a factory-set, non-adjustable switch with a fixed 5 PSI cut-out and 20 PSI cut-in to ensure consistent safety parameters and prevent tampering.
Can this switch be used on the high side of the system?
This model is specifically designed as a low pressure switch that opens on pressure drop. For head pressure control or high-pressure safety, a high-pressure cut-out switch should be selected.
What type of connection does the SLP0520 use?
It features a standard 1/4" SAE female flare fitting with a built-in depressor pin, allowing for direct mounting on a Schrader access valve.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
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Description
The Supco SLP0520 Low Pressure Switch is a high-precision, non-adjustable SPST safety control engineered to protect compressors from damage due to loss of charge or freeze-up conditions. Built for professional HVAC and refrigeration applications, this encapsulated pressure switch features a 5 PSI cut-out and a 20 PSI cut-in, providing a reliable automatic reset mechanism. It serves as the direct updated replacement for the legacy Supco 5731 series, ensuring seamless compatibility for technicians performing field maintenance or system overhauls.
Constructed with a snap-acting stainless steel hermetically sealed sensor, the SLP0520 offers broad refrigerant compatibility, including HFC, HCFC, CFC, and A2L refrigerants. The compact, direct-mount design utilizes a 1/4" SAE 45° female flare fitting complete with an integrated valve core depressor for rapid installation without the need for additional capillary tubes. With a 100,000-cycle rated load life and 5,000 PSI burst pressure, this low pressure cut-out switch meets the rigorous demands of commercial refrigeration and high-performance air conditioning systems.
Key Benefits for Technicians
- Universal Refrigerant Compatibility: Rated for use with modern environmental standards including A2L low-GWP refrigerants.
- Hardwired Reliability: Equipped with 18" 18 AWG lead wires for secure electrical termination in 24V, 120V, or 240V circuits.
- Durable Construction: The hermetically sealed sensor prevents environmental contamination and moisture ingress, critical for low-ambient operations.
- Direct Replacement: Specifically designed to replace Supco 5731 and similar fixed-setting low-side controls.
- Robust Electrical Ratings: Supports up to 5.8 FLA at 120VAC, providing versatile protection across various compressor sizes.
Common Questions
Is the Supco SLP0520 adjustable in the field?
No, this is a factory-set, non-adjustable switch with a fixed 5 PSI cut-out and 20 PSI cut-in to ensure consistent safety parameters and prevent tampering.
Can this switch be used on the high side of the system?
This model is specifically designed as a low pressure switch that opens on pressure drop. For head pressure control or high-pressure safety, a high-pressure cut-out switch should be selected.
What type of connection does the SLP0520 use?
It features a standard 1/4" SAE female flare fitting with a built-in depressor pin, allowing for direct mounting on a Schrader access valve.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.












