Rectorseal M43350 Low Pressure Switch

Product Description

The RECTORSEAL M43350 is a low pressure switch designed to monitor and protect refrigeration and air conditioning systems from unsafe low-side pressure conditions. When system pressure drops below the set point, the switch interrupts the control circuit, preventing compressor operation under potentially damaging conditions. This type of safety control is a standard component in refrigerant circuit protection and is typically installed or replaced by licensed HVAC-R technicians during routine service or system commissioning.

The M43350 is suited for use in residential and light commercial HVAC and refrigeration applications where low-side pressure monitoring is required. It serves as a protective device within the refrigerant circuit, typically wired into the low-voltage control loop to cycle or lock out the compressor when suction pressure falls outside safe operating range.

Key Features

• Monitors low-side refrigerant pressure to protect compressor from damage
• Interrupts control circuit on pressure drop below set point
• Suitable for refrigeration and air conditioning system applications
• OEM-style replacement form factor for service and retrofit installs

Compatibility

Designed as an OEM-style replacement low pressure switch for residential and light commercial refrigeration and air conditioning systems. Verify set point, pressure range, and connection type against system requirements before installation.

Installation Notes

Installation should be performed by a licensed HVAC-R technician. Recover or isolate refrigerant and de-energize the system before removing or installing any pressure switch. Follow applicable mechanical and electrical codes, including NEC requirements for low-voltage control wiring. Confirm the replacement switch set point and electrical ratings match the original equipment specifications before placing the system back in service.

Technical Specifications

• Switch Type: Low Pressure Switch

Standard Information

• Brand: RECTORSEAL
• Manufacturer Part Number: M43350