Overview
The United Electric J6-S134B is an industrial pressure and vacuum switch engineered for demanding process control applications. This pressure switch operates across a 30″ Hg vacuum to 20 psi setpoint range with multi-voltage capability (125/250/480 VAC), making it suitable for a wide range of industrial equipment including compressors, pumps, and HVAC systems. The J6-S134B features an internal adjustment mechanism and comes housed in a rugged NEMA 4X stainless steel enclosure with welded 316LSS bellows for superior corrosion resistance.
Key Features
- Vacuum and pressure setpoint range: 30″ Hg Vac to 20 psi
- Electrical rating: 15A at 125/250/480 VAC (multi-voltage capable)
- Contact configuration: One SPDT (Single Pole Double Throw)
- Enclosure: NEMA 4X stainless steel with welded 316LSS bellows
- Connection: 1/2″ FNPT (female national pipe taper) for both electrical and pressure ports
- Adjustment: Internal setpoint adjustment
Technical Specifications
- Model: J6-S134B
- Pressure Range: 30″ Hg VAC to 20 psi
- Contact Type: SPDT
- Electrical Rating: 15A @ 480 VAC
- Voltage Options: 125/250/480 VAC
- Enclosure Rating: NEMA 4X
- Bellows Material: Welded 316LSS stainless steel
- Pressure Port: 1/2″ FNPT
- Electrical Connection: 1/2″ FNPT
Typical Applications
- Compressor unload and cutoff control
- Pump discharge pressure monitoring
- HVAC system vacuum detection and safety
- Industrial process pressure protection
- Water treatment and filtration systems
- Steam and hot water equipment monitoring
Compatibility & Replacements
Compatible With
- Standard industrial control panels and enclosures
- Pneumatic and hydraulic systems using 480VAC control circuits
- Multi-voltage electrical distribution systems (125/250/480 VAC)
- Manual or automated pressure regulation systems
Replaces / Drop-In Replacement For
- United Electric J6-134 (non-S version)
- Direct replacement for equivalent J6 series models with same setpoint configuration
Works With
- NEMA 4X stainless steel enclosures and control cabinets
- Standard FNPT pipe and hose fittings (1/2″ NPT adapters available)
- Industrial pressure gauge and transducer systems
- Pneumatic control relay systems
- PLC-based industrial automation and monitoring systems
















