Air Compressor

Air Compressor Pressure Switch 30-40 PSI w/ Unloader Fit 69HAU3 3/8" NPT

🔧 Preset Pressure Control
30 PSI cut-in / 40 PSI cut-out ensures stable compressor operation

💨 Built-in Unloader Valve
Reduces startup load and prevents motor overload

⚡ Wide Voltage Compatibility
Supports AC 120V–600V & DC up to 240V

🛠 Heavy-Duty Steel Housing
Durable coated steel resists harsh industrial environments

🔩 Standard 3/8" NPT Connection
Easy installation and direct replacement

This air compressor pressure switch (69HAU3) is designed for industrial and commercial air compressor systems, especially suitable for two-stage compressors up to 250 PSI.

Equipped with a built-in unloader valve, it helps release trapped air during startup, reducing motor load and extending compressor life.

Its rugged steel housing ensures durability even in demanding environments.

• Preset Pressure：30–40 PSI
• Min Cut-In：15 PSI
• Max Cut-Out：60 PSI
• Thread Size：3/8" Female NPT
• Unloader Port：1/4" (6.0 mm)
• Protection Rating：IP54
• Material：Coated Steel

Single Phase：

• 120V (2HP)
• 240V (3HP)

Three Phase：

• 240V / 600V (5HP)

✔ Industrial Air Compressors
✔ Commercial Systems
✔ Two-Stage Compressors ≤250

📦 1 × Pressure Switch with Unloader Valve
📦 1 × 6.0mm Unloader Tubing

⚠️ Please verify pressure range and voltage compatibility before purchase

✔ Direct Replacement OE Standard
✔ Stable Performance & Long Lifespan
✔ Fast Shipping from US
✔ Professional After-Sales Support