The Red Dot 71R6155 green binary pressure switch provides dual protection for mobile HVAC systems by monitoring both low-side and high-side refrigerant pressure. It is a normally closed switch that prevents compressor operation if refrigerant pressure drops too low, ambient temperature becomes too low, or high-side pressure rises excessively. The switch automatically resets once system pressures return to normal operating ranges.
Designed for Freightliner Business Class and Century/Columbia applications, this switch features a female M10 x 1.25 fitting, four-terminal connector, and is calibrated for R134a refrigerant. Separate pressure set points allow fan control and compressor protection, making it a reliable OEM-style replacement.
Use the specifications and interchange numbers below to confirm compatibility before ordering.
Product Specifications
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Part Type: Binary Pressure Switch (Low / High)
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Red Dot Part No.: 71R6155
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Red Dot Factory / Catalog No.: RD-5-13234-0P
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OEM Reference: 06-35209-000
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Switch Type: High pressure binary
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Operating Style: Normally closed
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Refrigerant Compatibility: R134a
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Voltage: 12V
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Fitting: Female M10 x 1.25
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Electrical Connection: 4-terminal connector
Pressure Set Points
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Fan Control (M.P.): 325–270 PSI
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Compressor Protection (H.P.): 465–235 PSI
Applications
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Freightliner Business Class M2 100–112V
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Freightliner FL50, FL60, FL70 (2009–2010)
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Freightliner Century Class / Columbia (2009–2010)
Cross Reference Numbers
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Texas Truck AC: 850-8956
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AirSource (MEI): 1324
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Alliance: ABP N83 318035
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CoolStar (MEI): 912-1144
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Omega: 29-30185
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Primatech: PTAC1324
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Road Choice: SWI1944
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Sterling / Ford / Freightliner: 06-35209-000
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Truck Air (MEI): 11-0438
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TruckAC+: T6747
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Red Dot (Factory): RD-5-13234-0P
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Red Dot (Aftermarket): 71R6155
Interchange Numbers
06-35209-000, 1324, 4379-RD5132340P, 71R6155, 850-8956, ABP N83 318035, RD5132340P, RDHRD5132340P, RDT71R6155, SWI1944
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