
Supco SHP400300 Pressure Switch
The Supco SHP400300 High Pressure Switch is the direct engineering update for the legacy 5680 pressure switch, providing reliable system protection for HVACR refrigeration units. Built as an encapsulated, non-adjustable pressure control, this SPST switch features a 400 PSI cut-out (Open) and a 300 PSI cut-in (Close) to prevent compressor damage during high-side pressure spikes. Designed for direct mounting, it includes a 1/4" SAE female flare fitting with an integrated valve core depressor, ensuring a secure seal on standard service ports.
Constructed with a snap-acting stainless steel hermetically sealed sensor, the SHP400300 offers superior set point repeatability and stability in demanding environments. It is compatible with HFC, HCFC, and CFC refrigerants, including modern A2L blends, and is rated for automatic reset operations. With 18-inch 18 AWG leads and a life cycle rating of 100,000 cycles at rated load, this encapsulated pressure switch is a versatile solution for heat pump systems and air conditioning high pressure protection.
Key Benefits:- Universal Compatibility: Works with all major refrigerants (CFC, HCFC, HFC, and A2L) and serves as a cross-reference for Mars, Johnson Controls, and Ranco models.
- Rugged Construction: Features a hermetically sealed sensor and stainless steel internals for high-pressure durability up to a 2800 PSI burst rating.
- Simplified Installation: The direct mount 1/4" flare and pre-stripped 18-inch leads reduce field labor during emergency high-limit replacements.
- Automatic Reset Logic: Eliminates the need for manual intervention by resetting the circuit once pressure drops back to the 300 PSI cut-in point.
- Is this switch compatible with 240V systems? Yes, the Supco SHP400300 is rated for 24V, 120V, and 240V AC applications at 50/60 Hz.
- Does it require a separate mounting bracket? No, this is a direct mount switch designed to thread directly onto the refrigerant line's access fitting.
- Can this be used as a fan cycle control? While primarily a high pressure safety cut-out (opens on rise), always verify your system's specific PSI requirements for fan cycling before installation.
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: $16.34
-65%$16.34
$5.72Supco SHP400300 Pressure Switch
The Supco SHP400300 High Pressure Switch is the direct engineering update for the legacy 5680 pressure switch, providing reliable system protection for HVACR refrigeration units. Built as an encapsulated, non-adjustable pressure control, this SPST switch features a 400 PSI cut-out (Open) and a 300 PSI cut-in (Close) to prevent compressor damage during high-side pressure spikes. Designed for direct mounting, it includes a 1/4" SAE female flare fitting with an integrated valve core depressor, ensuring a secure seal on standard service ports.
Constructed with a snap-acting stainless steel hermetically sealed sensor, the SHP400300 offers superior set point repeatability and stability in demanding environments. It is compatible with HFC, HCFC, and CFC refrigerants, including modern A2L blends, and is rated for automatic reset operations. With 18-inch 18 AWG leads and a life cycle rating of 100,000 cycles at rated load, this encapsulated pressure switch is a versatile solution for heat pump systems and air conditioning high pressure protection.
Key Benefits:- Universal Compatibility: Works with all major refrigerants (CFC, HCFC, HFC, and A2L) and serves as a cross-reference for Mars, Johnson Controls, and Ranco models.
- Rugged Construction: Features a hermetically sealed sensor and stainless steel internals for high-pressure durability up to a 2800 PSI burst rating.
- Simplified Installation: The direct mount 1/4" flare and pre-stripped 18-inch leads reduce field labor during emergency high-limit replacements.
- Automatic Reset Logic: Eliminates the need for manual intervention by resetting the circuit once pressure drops back to the 300 PSI cut-in point.
- Is this switch compatible with 240V systems? Yes, the Supco SHP400300 is rated for 24V, 120V, and 240V AC applications at 50/60 Hz.
- Does it require a separate mounting bracket? No, this is a direct mount switch designed to thread directly onto the refrigerant line's access fitting.
- Can this be used as a fan cycle control? While primarily a high pressure safety cut-out (opens on rise), always verify your system's specific PSI requirements for fan cycling before installation.
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.
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Description
The Supco SHP400300 High Pressure Switch is the direct engineering update for the legacy 5680 pressure switch, providing reliable system protection for HVACR refrigeration units. Built as an encapsulated, non-adjustable pressure control, this SPST switch features a 400 PSI cut-out (Open) and a 300 PSI cut-in (Close) to prevent compressor damage during high-side pressure spikes. Designed for direct mounting, it includes a 1/4" SAE female flare fitting with an integrated valve core depressor, ensuring a secure seal on standard service ports.
Constructed with a snap-acting stainless steel hermetically sealed sensor, the SHP400300 offers superior set point repeatability and stability in demanding environments. It is compatible with HFC, HCFC, and CFC refrigerants, including modern A2L blends, and is rated for automatic reset operations. With 18-inch 18 AWG leads and a life cycle rating of 100,000 cycles at rated load, this encapsulated pressure switch is a versatile solution for heat pump systems and air conditioning high pressure protection.
Key Benefits:- Universal Compatibility: Works with all major refrigerants (CFC, HCFC, HFC, and A2L) and serves as a cross-reference for Mars, Johnson Controls, and Ranco models.
- Rugged Construction: Features a hermetically sealed sensor and stainless steel internals for high-pressure durability up to a 2800 PSI burst rating.
- Simplified Installation: The direct mount 1/4" flare and pre-stripped 18-inch leads reduce field labor during emergency high-limit replacements.
- Automatic Reset Logic: Eliminates the need for manual intervention by resetting the circuit once pressure drops back to the 300 PSI cut-in point.
- Is this switch compatible with 240V systems? Yes, the Supco SHP400300 is rated for 24V, 120V, and 240V AC applications at 50/60 Hz.
- Does it require a separate mounting bracket? No, this is a direct mount switch designed to thread directly onto the refrigerant line's access fitting.
- Can this be used as a fan cycle control? While primarily a high pressure safety cut-out (opens on rise), always verify your system's specific PSI requirements for fan cycling before installation.
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.












