Barksdale C9612-3-CS Sealed Piston Pressure Switch

The Barksdale C9612-3-CS is a sealed piston pressure switch engineered for hydraulic and pneumatic systems across industrial, mobile, and process applications. It delivers single setpoint, single pole double throw snap-action switching with internal adjustment and tamper-proof protection. The 416 stainless steel piston paired with Buna-N seals handles rapid cycling while maintaining long operational life across demanding environments.

## Technical Specifications

**Pressure Performance**
• Pressure Range: 250 to 3000 PSI
• Adjustable Range (Decreasing): 250–2650 PSI
• Adjustable Range (Increasing): 280–3000 PSI
• Deadband: 30–350 PSI
• Proof Pressure: 7000 PSI
• Accuracy: ±2% of adjustable range

**Electrical Ratings**
• 10 A at 125/250/480 VAC
• 2.0 A at 600 VAC
• 0.03 A at 250 VDC
• Switch Type: SPDT snap-action
• Electrical Connection: 18-inch free leads (Purple common, Red N.O., Blue N.C.)

**Temperature & Environmental**
• Operating: −20°F to +165°F (−29°C to +74°C)
• Storage: −40°F to +200°F (−40°C to +93°C)
• Enclosure: Anodized aluminum, NEMA 3 rated

**Certifications**
• UL Listed (File E42816)
• CSA Approved (File 3231 02, 022355-0-000)

## Key Features

• Sealed piston design with 416 stainless steel operator and Buna-N O-ring
• Internal adjustment screw with counterclockwise increase/clockwise decrease logic
• Tamper-proof adjustment screw cover
• 1/4-inch-18 TPI female threaded pressure connection (nickel-plated aluminum)
• Anodized aluminum enclosure for corrosion resistance
• Shipping weight: approximately 2.5 lbs

## Typical Applications

• Hydraulic presses and power units
• Compressors and compactors/balers
• Machine tool systems and metalworking equipment
• Lubrication systems
• Railroad and utility power generation equipment

## Compatibility & Integration

Wetted components are stainless steel and Buna-N, ensuring compatibility with standard hydraulic and pneumatic fluids. The 18-inch free leads enable direct integration into control circuits. NEMA 3 enclosure rating supports indoor industrial environments.