Ranco O16-261 Low Pressure Control Switch with Manual Reset SPDT

The Ranco O16-261 is a single-function low pressure control designed to protect refrigeration and air conditioning compressors against loss of charge, evaporator freeze-up, and excessively low suction pressure. This manual reset control features an SPDT (single pole, double throw) switch that breaks on a fall in pressure, providing reliable system protection for commercial refrigeration applications.

Key Features:

• Pressure range: 10 inches WC (water column) to 100 PSI
• Fixed differential: 10 PSI
• Manual reset function prevents automatic restart after shutdown
• 48-inch capillary tube with 1/4-inch flare nut connection
• SPDT switch configuration for flexible wiring options
• NEMA 1 enclosure with non-conductive cover
• Laser-welded bellows for extended service life
• Super Cap capillary vibration protection system
• Universal mounting with compact design

Applications:

Ideal for use in self-contained refrigerators, freezers, coolers, walk-in units, ice machines, vending machines, and refrigeration display cases. Compatible with modern refrigerants including R-134A, R-401A, R-401B, R-402A, R-402B, R-403A, R-403B, and R-404A, as well as legacy refrigerants R-12, R-22, R-500, and R-502.

The manual reset feature requires an operator to manually restart the system after a low-pressure shutdown, ensuring that the underlying issue is addressed before resuming operation. The front-located captive cover screw and large scale plate make installation and adjustment straightforward for HVAC technicians.