Description
The Marvair 70656 is a Normally Closed (N/C) high pressure switch engineered for use in Marvair HVAC systems. Designed to protect refrigeration circuits from dangerously elevated pressures, this switch opens the control circuit when system pressure reaches the cut-out threshold and automatically resets once pressure drops to the cut-in setpoint — helping prevent compressor and system damage.
Key Features
- Normally Closed (N/C) operation for fail-safe high-side pressure protection
- Cut-Out (OFF) setpoint: 660 PSI — opens circuit to shut down system at high pressure
- Cut-In (ON) setpoint: 450 PSI — closes circuit to restore operation when pressure subsides
- OEM Marvair replacement part for reliable, drop-in compatibility
- Protects compressors and refrigerant circuits from overpressure conditions
- Suitable for high-side refrigerant pressure monitoring in packaged HVAC equipment
Specifications
- Brand: Marvair
- Part Number: 70656
- Switch Type: High Pressure Switch
- Contact Configuration: Normally Closed (N/C)
- Cut-Out Pressure (OFF): 660 PSI
- Cut-In Pressure (ON): 450 PSI
Application
This high pressure switch is a genuine Marvair OEM component intended for use in Marvair packaged terminal and commercial HVAC units. It provides critical overpressure protection by interrupting the control circuit when refrigerant pressure exceeds safe operating limits, then automatically restoring operation once conditions normalize. Always verify compatibility with your specific Marvair unit model before installation.
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