Overview
The Square D 9012 GAW-2 is a diaphragm-type industrial pressure switch designed for pneumatic and hydraulic applications. Rated for 600VAC 10A electrical operation, this SPDT (single-pole double-throw) switch monitors fluid pressure across a factory-adjustable range of 1–40 PSI, making it ideal for compressed air systems, pump pressure monitoring, and fluid-powered industrial equipment. The unit features zinc-plated steel housing with NEMA 4/4X/13 environmental sealing for indoor/outdoor reliability.
Key Features
- Adjustable Pressure Range: 1–40 PSI with integral adjustment screw for field calibration
- SPDT Contact Configuration: One normally-open (NO) and one normally-closed (NC) circuit for flexible control logic
- Robust Housing: Zinc-plated steel construction with water-tight, dust-tight, and oil-tight sealing rated NEMA 4/4X/13
- Diaphragm Actuator: Nitrile rubber diaphragm for compatibility with air, non-corrosive gases, and hydraulic oil
- Standard Port Connection: 1/4″ NPTF (National Pipe Thread Female) for universal pneumatic system integration
- Differential Control: Adjustable pressure differential (hysteresis) accessible via cover removal for customized switching behavior
Technical Specifications
- Pressure Range: 1–40 PSI adjustable
- Maximum Allowable Pressure: 100 PSIG
- Electrical Rating: 600VAC, 10A
- Contact Configuration: SPDT (Form 1616)
- Connection Type: 1/4″–18 NPTF (NPT Female)
- Mounting: 1/4″ NPTF port (inline or manifold-mounted)
- Housing Material: Steel, zinc-plated and passivated
- Actuator Type: Diaphragm (low-pressure design)
- Operating Fluids: Air, non-corrosive gases, hydraulic oil
- Environmental Rating: NEMA 4, 4X, 13 (water-tight, dust-tight, oil-tight)
- Termination: Screw clamp terminals
- UPC Code: 785901000952
Typical Applications
- Compressed air system pressure monitoring and cut-in/cut-out control
- Hydraulic pump discharge pressure sensing
- Tank or receiver pressure regulation
- Pneumatic actuator pressure protection circuits
- Industrial equipment shutdown logic on pressure fault conditions
- Water system and non-corrosive fluid pressure supervision
Compatibility & Replacements
Compatible With
- Pneumatic control systems and compressed air equipment
- Hydraulic power units and mobile machinery
- PLC analog input modules (via discrete 24VDC auxiliary relay if needed)
- Motor control relays and contactor coils (600VAC rated)
- Industrial safety circuits and pressure interlock systems
- Manifold block cavity standards (1/4″ NPT)
Replaces / Drop-In Replacement For
- 9012 GAW-2 (all revisions and series variants)
- Telemecanique Type GAW pressure switches (diaphragm type, same pressure range)
- Legacy Square D Class 9012 Type G low-pressure switches with SPDT contact requirement
Works With
- Direct wiring to 600VAC control circuits (motor starters, solenoid valves, contactor coils)
- Hardwired logic and relay-based automation systems
- Standard DIN rail and panel-mount electrical cabinets
- PLC discrete I/O modules via auxiliary 24VDC relay interface
- Industrial communication protocols do not apply (discrete analog switch output only)
