Description
Binary HPCO/LPCO A/C pressure switch — 3/8-24 male
A binary high-/low-pressure cut-out switch that protects the A/C system by disengaging the compressor clutch whenever pressure climbs too high or drops too low. It opens on high pressure at about 377 psi and cuts out on low pressure at about 28 psi — two safety functions in one switch, on a 3/8-24 male thread. Cross-references UAC SW 10001C and a range of OE numbers.
Two safety cut-outs in one switch
A binary switch wires into the compressor-clutch circuit and guards both ends of the pressure range:
High-pressure cut-out (HPCO)
Opens the clutch circuit near 377 psi to protect the system from over-pressure — a blocked condenser, failed cooling fan, or overcharge.
Low-pressure cut-out (LPCO)
Cuts the clutch near 28 psi so the compressor won't run on a low charge — protecting it from the damage of running without enough refrigerant and oil.
One switch, one circuit
Both functions are combined in a single binary switch, keeping the clutch engaged only within the safe operating band.
Know exactly what you're ordering
Protect the compressor & the system
Dual protection
High- and low-pressure cut-out in one switch guards against both over-pressure and low-charge damage.
3/8-24 male
Threads into a standard 3/8-24 female switch port on a drier, accumulator, or line fitting.
OE interchange
Replaces UAC SW 10001C, ACDelco, Four Seasons, NAPA, and OE Acura/Honda numbers — see the table.
Set pressures
Factory-calibrated to open high near 377 psi and cut out low near 28 psi.
Simple install
Thread it into the switch port and wire it into the clutch circuit — a quick, reliable safety add.
Compact
Small footprint that fits tight engine-bay and line locations.
Wire it & mount it
Pressure switch pigtail
A 2-wire pigtail to connect the switch into your clutch-circuit wiring.
Shop the pigtail →Receiver-drier with switch port
Need somewhere to mount it? This universal drier has a 3/8-24 female switch port.
View the drier →Universal binary switch · 211-290
Also available: a universal 3/8-24 male binary high/low switch.
View the alternative →Interchange & cross-reference numbers
Match your old switch against the numbers below.
| Brand | Part number(s) |
|---|---|
| UAC | SW 10001C |
| Acura / Honda (OE) | 80440-SD4-003 · 80440-SD4-305 · 80440-SD4-013 |
| ACDelco | 1551014 |
| Four Seasons | 20926 |
| NAPA | 207750 · TEM207750 |
| Omega | E951011 · MT0350 |
| Santech | MT0350 · E951011 |
| Global Parts Distributors | 1711467 |
| Global Air | PS1803 |
Technical specs
Binary switch FAQ
What is a binary HPCO/LPCO switch?
What thread does it use?
Where does it install?
What does it cross-reference?
Will it fit my system?
Shop binary pressure switches
Browse binary and pressure switches and set your quantities in one place.
| Image | Product Name | SKU | Price | In Stock | Quantity | Add To Cart |
|---|---|---|---|---|---|---|
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Female R134a 1/4 FF binary high-low pressure switch, low opens at 28 PSIG closes at 29 PSIG, high opens at 384 PSIG closes at 298 PSIG | 211-1022 | $14.23 | In stock | ||
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Pressure Switch Binary 3/8-24 Male Normal Open Closed (psi)28 Closed (psi)312 Open (psi)398 | 211-720 | $14.57 | In stock | ||
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Match your pressure switch before you buy
Send us your OE switch number or your system's cut-out settings and thread, and we'll confirm the right binary switch.
Add to cart ↑ Ask a questionAcura®, Honda®, and all manufacturer names and part numbers are trademarks of their respective owners and are listed for identification and cross-reference purposes only; their use does not imply affiliation or endorsement. Confirm thread, pressure settings, and application against your system before installing. Recover refrigerant before opening the A/C system.
