Ranco O12-1550 Dual Pressure Control Switch, Automatic Reset, 10-40 PSI Low / 150-450 PSI High

The Ranco O12-1550 is a dual pressure control switch designed for HVAC and refrigeration systems requiring precise monitoring of both high and low pressure conditions. This automatic reset control provides reliable protection and system management with dual independent pressure ranges.

Key Features:

• Dual pressure control with independent high and low pressure settings
• Low pressure range: 10-40 PSI for evaporator or suction line monitoring
• High pressure range: 150-450 PSI for condenser or discharge line protection
• Automatic reset functionality eliminates manual intervention after pressure normalization
• Replaces legacy part number 017-H4758 for retrofit applications
• Durable construction suitable for commercial refrigeration and air conditioning systems

This pressure control switch is commonly used in refrigeration systems, heat pumps, and air conditioning applications where simultaneous monitoring of both high-side and low-side pressures is required. The automatic reset feature allows the system to resume operation once pressure conditions return to normal operating ranges, reducing service calls and downtime.