Ranco
Ranco o16-601 SPDT hvac control 22.5-47.5F 120/240V
A refrigeration temperature control with an SPDT switch operating from 22.5 to 47.5 °F at 120/240 V
- Wide temperature range 22.5 to 47.5°F for flexible cooling setups
- SPDT switch opens high or low for versatile wiring options
- Dual voltage 120/240V works with standard and high-power circuits
- Adjustable constant cut-in maintains stable temperatures automatically
- Compact 2 3/4 × 3 13/16 × 2 in fits tight control panels
Ranco O16-601 SPDT HVAC Control
The Ranco O16-601 is a single-pole double-throw temperature control built for refrigeration systems such as bulk milk coolers. It operates on 120/240 V circuits with a switching rating of 4.6 amps at 120 V and 2.3 amps at 240 V. The control range spans 22.5 to 47.5 degrees Fahrenheit with a fixed 1.5 degree differential. Its compact enclosure measures 2 3/4 inches high, 3 13/16 inches wide and 2 inches deep.
Suits fixed-range cooling.
This control serves installers who need a reliable cut-in/cut-out switch for cooling-only applications in the 22.5 to 47.5 degree Fahrenheit window. The SPDT action opens the circuit on temperature rise, making it a direct fit for many legacy cooler panels. Buyers who require a heating thermostat, a wider adjustment span or a programmable differential should look at other control types. The fixed 1.5 degree differential cannot be altered in the field.
22.5 to 47.5 degrees Fahrenheit control range
The single specification that decides fit is the 22.5 to 47.5 degree Fahrenheit operating window paired with the constant 1.5 degree differential. If the target process temperature sits inside this band and the load does not exceed 4.6 amps at 120 V or 2.3 amps at 240 V, the O16-601 will cycle the compressor correctly. Applications outside this temperature span or requiring a different differential need a different control.
Highlights
- Wide temperature range 22.5 to 47.5°F for flexible cooling setups
- SPDT switch opens high or low for versatile wiring options
- Dual voltage 120/240V works with standard and high-power circuits
- Adjustable constant cut-in maintains stable temperatures automatically
- Compact 2 3/4 × 3 13/16 × 2 in fits tight control panels
Specifications
| Brand | RANCO |
|---|
Questions about this item
Should I choose the 22.5°F or 47.5°F end of the range for my bulk milk cooler?
The control adjusts continuously between 22.5°F and 47.5°F with a 1.5°F differential, so you set the exact temperature your cooler needs rather than picking one endpoint.
What does the 1.5°F differential mean once the control is installed?
It means the switch opens or closes 1.5°F above or below your set point, preventing rapid cycling of the compressor.
How does the 120/240V rating limit the current I can switch?
At 120V the contacts handle 4.6A, while at 240V they handle 2.3A, so size your load accordingly.
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