Overview
The Square D 9012-GNG-5 /B pressure switch is a reliable, electromechanical control device designed for machine-tool and industrial applications. Classified as Class 9012, Type GNG-5, Series B with Type 1 enclosure and a 3-150 PSIG range, this unit provides snap-action switching for pneumatic and hydraulic systems. Manufactured by Schneider Electric, the 9012-GNG-5 /B combines proven durability with simple, field-proven operation.
Key Features
- Diaphragm-Actuated Design: Single-stage diaphragm-actuated for machine-tool applications with a 3-150 psi range on decreasing pressure and 6.0-30.0 psi adjustable differential
- SPDT Contacts: NC-NO/SPDT/form-C/snap action silver nickel contacts for reliable control circuit switching
- Rugged Enclosure: NEMA 1 enclosure with zinc-plated steel diaphragm housing
- Certifications: UL Listed and CSA certified
- Standard Connections: 1/4″-18 NPTF pressure connection with screw-clamp electrical terminals
Technical Specifications
- Pressure Range (decreasing): 3–150 PSIG
- Adjustable Differential: 6.0–30.0 PSIG
- Maximum Working Pressure (MWP): 475 PSIG
- Contact Type: SPDT (Form C)
- Contact Material: Silver-nickel
- Enclosure: NEMA 1
- Enclosure Material: Thermoplastic and zinc-plated steel
- Diaphragm Fluid Compatibility: Nitrile (Buna-N)
- Pressure Connection: 1/4″-18 NPTF
- Electrical Connection: Screw-clamp terminals, 22–12 AWG
- Certifications: UL Listed, CSA Certified
- Condition: Used, fully tested
Typical Applications
The Square D 9012-GNG-5 /B pressure switch is ideal for:
- Machine-tool hydraulic and pneumatic control circuits
- Pump discharge protection and startup circuits
- System pressure monitoring in industrial presses and broaches
- Compressor or pump cutout control
- Pilot-operated directional valve control in fluid-power systems
- Maintenance and retrofit of legacy control systems
Compatibility & Replacements
Compatible With
- Schneider Electric industrial automation systems
- Square D / Telemecanique pneumatic and hydraulic control circuits
- Standard 24 VDC and 120/240 VAC control wiring
- Machine-tool hydraulic systems rated to 475 PSIG
- Air compressor and pump circuits (both fixed and variable displacement)
Replaces / Drop-In Replacement For
- Square D 9012GNG5 (part number without hyphens)
- Similar Telemecanique 9012G series pressure switches with equivalent ratings
- Verify compatibility with your system integrator before ordering for critical applications
Works With
- Pneumatic and hydraulic control systems
- Standard industrial relay panels and control cabinets
- 24 VDC and 120/240 VAC solenoid valves
- Pump-motor starter circuits
- Automation control logic (PLC inputs)
